The discovery of the first exoplanet | The 2019 Nobel Prize in Physics

The very first exoplanet - a planet outside of our Solar System orbiting another star - was discovered in 1995 by Queloz and Mayor. They were awarded the 2019 Nobel Prize for Physics for this discovery. But why did they have to wait 24 years to win it? Often, it’s not just the discovery itself that’s worthy of the prize, but the legacy that discovery leaves. In this case, producing a whole new field of research in astrophysics and making 18,852 other research papers possible. #NobelPrize2019
Help discover more exoplanets by classifying transits in new data from the TESS telescope: planethunters.org
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16th century - 00:44
18th century - 01:49
19th century - 02:39
1950s - 03:29
1960s - 07:46
1970s - 08:56
1980s - 09:28
1990s - 10:08
2000s - 15:22
2010s - 20:34
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My new book 'Space: The 10 Things You Should Know' is out now worldwide! (except US & Canada) You can pre-order it from amazon here: bit.ly/SpaceDrBecky
News on US & Canadian publication coming soon.
Don't forget to subscribe and click the little bell icon to be notified when I post a new video!
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Giordano Bruno (1584) - web.archive.org/web/201204270...
Newton’s Principia (1713) - books.google.co.uk/books?id=t...
Jacob (1855) - articles.adsabs.harvard.edu/pd...
Moulton (1899) - articles.adsabs.harvard.edu/pd...
[Heintz (1988) - articles.adsabs.harvard.edu/pd...]
Struve (1952) - articles.adsabs.harvard.edu/pd...
Huang (1959) - articles.adsabs.harvard.edu/pd...
van de Kamp (1963) - articles.adsabs.harvard.edu/cg...
van de Kamp (1969) - articles.adsabs.harvard.edu/cg...
Hershey (1973) - articles.adsabs.harvard.edu/pd...
Smith & Terrile (1984) - science.sciencemag.org/conten...
Bailes, Lyne, Shamar (1991) - www.nature.com/articles/352311a0
Bailes, Lyne, Shamar (1992) - www.nature.com/articles/35521...
Wolszczan & Frail (1992) - www.nature.com/articles/355145a0
Wolszczan (1994) - science.sciencemag.org/conten...
Mayor & Queloz (1995) - www.nature.com/articles/37835...
Butler et al. (1997) - iopscience.iop.org/article/10...
Butler et al. (1999) - iopscience.iop.org/article/10...
Buzzfeed article: www.buzzfeednews.com/article/...
Henry et al. (2000) - iopscience.iop.org/article/10...
Charbonneau et al. (2000) - iopscience.iop.org/article/10...
Santos et al. (2001) - www.aanda.org/articles/aa/pdf...
Charbonneau et al. (2002) - iopscience.iop.org/article/10...
Deming et al. (2005) - arxiv.org/pdf/astro-ph/050355...
Richardsen et al. (2007) - arxiv.org/pdf/astro-ph/070250...
Grillmair et al. (2007) - arxiv.org/pdf/astro-ph/070249...
Barman et al. (2007) - iopscience.iop.org/article/10...
Kalas et al. (2009) - arxiv.org/pdf/0811.1994.pdf
Quintana et al. (2014) - arxiv.org/pdf/1404.5667.pdf
Jenkins et al. (2015) - www.nasa.gov/sites/default/fi...
Anglada-Escudé et al. (2016) - www.nature.com/articles/natur...
Gillon et al. (2017) - arxiv.org/pdf/1703.01424.pdf
Shallue & Vanderburg (2017) - arxiv.org/pdf/1712.05044.pdf
Tsiaras et al. (2019) - www.nature.com/articles/s4155...
Benneke et al. (2019) - arxiv.org/pdf/1909.04642.pdf
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Dr. Becky also presents videos on Sixty Symbols: / sixtysymbols
and Deep Sky Videos: / deepskyvideos
Dr Becky Smethurst is an astrophysicist researching galaxies and supermassive black holes at Christ Church at the University of Oxford.
drbecky.uk.com
rebeccasmethurst.co.uk
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[@proxyde850]

Dr. Becky, I really like that you add photos of the papers' authors. It's a nice touch that helps us see the humans behind the science. Thank you for taking the extra time for this.

[@isabelab6851]

I do as well...it shows that real scientific information is developed by individuals following scientific methods...and it takes a lot of time, collaboration, and willingness to try new things

[@thandasibisi7534]

@@isabelab6851 It is good stuff no doubt.

[@HiopX]

and cartoon rabbits 14:50

[@markiliff]

As an astro-muggle, I've seen loads of these stories as they skated by over the years but *really* appreciate hearing them all strung together into a story like this. Many thanks.

[@DrBecky]

I’m totally going to start calling myself an “astro-muggle”

[@markiliff]

@@DrBecky But... but... you're an astro-*wizard.* Correction: *the* astro-wizard

[@Klodvig105]

"I wasn't expecting a three-planet system around a millisecond pulsar." "Nobody expects a three-planet system around a millisecond pulsar!"

[@AnimationGoneWrong]

Our weapons are telescopes, logic, and a fanatical devotion to astrophysics! NOW!!!! Get.... the rack!

[@simonoleary9264]

@@AnimationGoneWrong Our weapons are telescopes, logic, a fanatical devotion to Astrophysics ... annndd the Scientific method.

[@ffggddss]

@ J T: But you've gotta say it like John Cleese! Fred

[@randallmarsh446]

only the tip of the iceberg.The discovery of the secretes of the universe will never end.

[@olevik2005]

If I had a hat I would've tipped it to you, you magnificent individual.

[@movax20h]

So sad not to see Wolszczan and Frail not receiving half of the prize. Not only they had results 5 years earlier, and with incredible precission accuracy in their model, but also did change so many things about understanding of planets around stars in general.

[@scubaguy007]

Apparently none of the scientists have watched Stargate. There’s lots of habitable planets and they all look like Canada. 😉🖖🏼🤓

[@vladimirarnost8020]

Logical conclusion: Canada is an exo-planet.

[@nousernamejoshua1556]

Well Canada 'did' have the magnetic N, but is seeming to have shifted. Did @Dr.Becky say pulsars are the beginning of stars? Another set of three.

[@simonkemfors]

yeah, all planets are covered in Spruce trees, this is known

[@scubaguy007]

@@simonkemfors Tis known. 😉

[@punitdesai1410]

@@nousernamejoshua1556 pP

[@TheWTZ1983]

*Tip for English speakers* - Polish _w_ is English _v_ - Polish _sz_ is English _sh_ - Polish _cz_ is English _ch_ Therefore the last name of Aleksander Wolszczan should be pronounced as _Volshchan_ 😉 Greets from Kraków to all of you 😃

[@abitoftheuniverse2852]

Is it Volsh-chan, two syllables? I had to look it up for myself, even before I sent the the question, but I am still curious if you can verify that this is how it's pronounced. upload.wikimedia.org/wikipedia/commons/b/b3/Pl-Aleksander_Wolszczan.ogg It sounds as you describe. I ask because I see Polish names almost every day and I always feel as if I may be pronouncing them wrong, but I realize I have been saying them correctly most of the time, only because I've heard most of them pronounced by other people before attempting to say them myself. Thank you for this post.

[@azalyn123]

@@abitoftheuniverse2852 yes, it's just two syllables :-)

[@STOG01]

kzbin.info/www/bejne/f2mxh4OblMyZkLM this :)

[@TheWTZ1983]

Yes @ABitOfTheUniverse, but I would rather pronounce it this way: _Vol-shchan_ 😉

[@kristupas_]

@johnmburt1960 It's Sta-nee-swav Lem. Letter "Ł" is in his first name, not surname. (Stanisław Lem). And last syllable is pronounced like "swath" (www.merriam-webster.com/dictionary/swath.)

[@jon2431]

Your channel has really been my favorite recent astronomy channel. Consistently great content ever since you started regularly making videos. Thank you!

[@shookings]

"a mere month before I came into the world" Way to make a dude feel old, Becky.

[@ian_b]

When I was a kid all my astronomy books said that there were surely planets orbiting other stars but they would be so faint that they could never be detected. I was born in 1966.

[@cpt_nordbart]

My thoughts exactly... 1984 here....

[@UpcycleElectronics]

'84 here too, and feelin old.

[@bierrollerful]

@@ian_b I have a book about astronomy/space stuff, published in the late 60s, that my grandfather has left me. It's both amusing and humbling to compare where we were back then to where we are now. The book lists all of earth's satellites on one single page.

[@ChrisPage68]

@@cpt_nordbart Get off my lawn, kiddo! 😋 I was 16 back then... 👴

[@ln5321]

14:48 So we're all just going to pretend there's nothing abnormal about a cartoon rabbit being involved with the discovery of exoplanets?

[@beastgod5554]

haha glad someone else caught that

[@matelustica2922]

@@beastgod5554 it was funny surname so i looked at picture... and wtf???

[@culwin]

It's Binky (I think) from Matt Groenig's Life in Hell comic strip

[@paulgibbon5991]

Well, you have a lot of time to look at the sky when you're on a desert island. :-)

[@rksnj6797]

Love watching your videos! Your passion for your field of work comes through in your excitement when presenting the material.

[@ChrisPage68]

Born in 1990? Thank you for making me feel ancient, Dr Becky! 😭 What I'm taking away from this is that Newton looks uncannily like TV presenter Jeremy Vine.

[@aemrt5745]

Dr. Becky, I have been an amateur astronomer since the late 70s. Thank you for the programs. They are well done and an excellent bridge between the amateur and professional world. I wish this kind of material was avalable back when I entered the hobby. It is amazing how much astromomy knowledge has grown in the past 40 years.

[@stephenpieterman5273]

Thank you so much! I really love the quality and research that goes into your videos. Even though I am in a completely different field of research, your videos make me understand and spark my interest in the universe!

[@MrRagusa76]

Almost 50K, Dr. Becky! Well deserved. Edit: 50K and counting. I hope you get to 100K soon, your video’s are great!

[@francoislacombe9071]

A gas giant in a star's habitable zone could still be interesting from the point of view of the search for life. It could have large habitable moons.

[@DrBecky]

Yes I didn’t mention that but there’s a huge body of work looking into habitable exomoons now that the first detection of an exomoon has been made! 👍 exciting stuff

[@desther7975]

@@DrBecky Next thing you know, they'll discover a forest moon with an oddly bright submoon in orbit around it.

[@rhoddryice5412]

@@desther7975 With short two legged fur balls armed with stone tipped spears.

[@dsdy1205]

@@desther7975 And it seems to have a strong green emission line...

[@paulgibbon5991]

And it's worth bearing in mind that two of the most promising potential hosts of life outside Earth in our solar system are Europa and Enceladus, both well outside the Sun's habitable zone.

[@DataCymru1701]

Love watching Dr Becky's video, she's always got something new to teach and it's why I keep coming back, keep it up, I might get bored otherwise!

[@joethemariner]

I love your long form style videos. This is a fantastic way to talk about this years Nobel prize. Great job! Also your shirt is cute AF!

[@DrBecky]

Thanks Joseph 👍

[@happyhome41]

This may be your best video yet. I am in awe of your amazing distillation of 14,000 + papers, and in a wonderful example of the highest practice of human thought, build a case and lead us convincingly to the conclusion of the Nobel committee, all the while, informing us mightily along the way.

[@alpha.wintermute]

This is exactly the information I was hoping to find online. Thank you so much for sharing the history of exoplanet discovery

[@biomed007]

I loved this summary of the history of exoplanet discovery, and love your organization of thought. Thank you!

[@3thomasH]

Great video; I especially liked the historical perspective.

[@StasiSLG]

Another lovely video Dr. Becky. Thank you!

[@aprendendoaainvestir]

Brilliant! Fascinating historical path! Great video!

[@pathtoknowledge6847]

One of the best channels on KZbin for Astronomy ❤🌌💫

[@lord.have.myrcene]

Subscribing to your channel has been the best thing ever. Thanks so much for making these informative videos!!!!! I love learning and you make it so fun and easy to follow! ❤

[@redertsteens]

Absolutely addictive way of presentation! Thank you

[@OLD-AND-UGLEE]

Becky, your outtakes are hysterical!! Thank you for another informative and enlightening lecture. We are truly on the cusp of learning about exoplanets. There is so much more to learn, The fact that there are planets around a pulsar is amazing. How it occurred is a real question. Along the lines of unanswerable questions... Why does toast always land jam side down when you drop it? So, Thank you for your time to make this video Clear Skies, God Bless

[@sojolly]

Enjoyed this discussion of the related discoveries around the Nobel prize for this year. I do enjoy your interests and curiosity, keep it up.

[@g0balot]

Fascinating look at exoplanet history. Thank you.

[@emiliomencia7429]

Excellent chronology of exoplanet discovery history.

[@edsmith2562]

Fine work! I'll save this one for future study. Thank you Dr. Smethurst.

[@alainmaury5941]

Just to nitpick : Didier's name is pronounced Kelo, not kweloz. Also I would have expected you would have talked about how the discovery came to be. If you search for Mayor's publications on the ADS, you see he was in stellar radial velocity (but wrote a 1988 paper titled "a giant planet beyond the solar system ?" ). Geneva observatory had (still has in fact) a 1m telescope at OHP, and they were using Coravel to measure the radial velocities of stars. Then the use of fiber optics to link the telescope to the spectrograph (i.e. no more flexure while the telescope tracks during the night) and the thermal stabilization of the spectrograph allowed to go from km/s to m/s precision, and therefore the detection of Jupiter like planets. I used to work at La Silla Observatory before the HARPS spectrograph (2000-2003), and the former spectrograph was in a thermal stabilized room below the 3.6m telescope. If you just opened the door of that room, measures were bad for 2 days. It's really very high precision stuff (HARPS is in a vacuum chamber). Other than that another very good youtube video. As usual :).

[@rhoddryice5412]

And comments like yours add slot. Thank you.

[@Scottyrock1000]

Always fun to watch your presentations.

[@luudest]

Thank you for this historical review. Must have been quite some work 🙏

[@jcinaz]

Excellent as usual. Love your bloopers.

[@karthikeswara8441]

Excellent summary!! Keep going

[@PetraKann]

The first known helio-centric cosmological model was proposed by the great ancient Greek astronomer and philosopher Aristarchus (~400 BC). One of the main reasons Aristarchus's model was not adopted at the time was that Aristotle didnt accept it. In fact Coppenicus's initial draft of his helio-centric model referred to the Aristarchus model, but was edited out in the first printing of the Coppenicus's book.

[@pansepot1490]

I have heard that the reason (Aristotele’s reason?) why the heliocentric model wasn’t accepted was because they didn’t see any parallax in the stars. The thinking went that if the earth was moving there had to be some parallax observable in the sky which there wasn’t. They thought that in order for the heliocentric model to be correct the stars had to be so far away that such distance was impossible.

[@PetraKann]

@@pansepot1490 That is a possibility. But just as in recent times, there were religious pressures and superstitions that made a non-geo-centric cosmos unpalatable and even heretical in nature.

[@PetraKann]

@@pansepot1490 That is a possibility. But just as in recent times, there were religious pressures and superstitions that made a non-geo-centric cosmos unpalatable and even heretical in nature.

[@PetraKann]

@Raging S Interesting. Do you have reference or source? I am not familiar with this interpretation of Aristarchus's work. My understanding is that Aristarchus of Samos maintained until his death that the Earth revolved around its axis and orbited the sun.

[@elmuziko]

Great video. Thorough, fun and easy to follow. Thanks to you I've now got video killed the radio star in my head!

[@CooganBear]

Thank you Dr. Becky for these videos. Isaac Arthur would be proud. 💟

[@cacheman]

Awesome research on this history, thank you.

[@rylian21]

I love the bloopers and bits at the end. :D

[@zeartisthour69]

Love these videos!

[@sapelesteve]

Interesting video Dr. Becky. Must be nice having a job that involves locating stars & their exoplanets. BTW, love the out-takes & your Harry Potter tee shirt!! :)

[@hosackies]

Thank you Dr. Smethurst, I'm getting nerd chillz just listening to your presentation! subbed!

[@ericmunoz6004]

Love your show! You smile-maker you! (The intro I knew from Carl Sagan's Cosmos, which I watched in my teens, that episode where he goes to a school to explain the kids about the methods of planet-hunting, and how during their lifetimes, in the near future, they'd witness those discoveries).

[@Arfonfree]

Every time I watch one of your videos I am enthralled by how much we have learned in the years since I attended a university. Thank you so much for the opportunity to peek into what is going on.

[@elric4957]

Dr. Becky is the Dr. Mike of the astrophysics field. Great content, pleasing on the eyes and enjoyable personality. Keep it up ☺️ - Love from Malaysia.

[@DrBecky]

High praise! Thanks

[@vimalramachandran]

Good account of the history of exoplanet research. Useful as a reference, good job!

[@rwjoyner]

Thank you, Dr. Becky, for a fascinating and impressively thorough discussion of this topic! Interesting to know how far back humankind was thinking about these things...

[@carloscastanheiro2933]

Thank you so much, your videos are always fascinating and super funny.

[@Marce159951]

Hello and greetings from Argentina! Thank you for sharing your knowledge, you're an inspiring person. I hope to see your next video!

[@johnnybegoode2374]

I like how you explain some of the technical aspect behind the science. Usually most science forms just spout facts but not how they come to those facts

[@bierce716]

I love the way you make all this accessible to the rest of us who are not astronomers... and I also love the way you say "Haich" for "H" :)

[@andrewedwards350]

OK, this is the second video of yours that I've watched....you explain this stuff so well! I wish my high school physics teacher had your energy. I might have done better in school:(

[@adamc1966]

Also love your version of The Buggles' classic hit from 1979 :)

[@Elephantine999]

I had no idea that we had learned so much about exoplanets. Great summary! Thanks.

[@zapp442]

Love the outtakes!

[@timsmith6675]

I always learn so much from Dr.Becky while being very entertained with her candid and humorous personality. 😃 I say, save a spot for a "Heidi" picture on your wall and I will pay for it.

[@francishayter5954]

love your videos! and your communication enthusiasm! don't know if you'd want/can correct this, but @ 15:45 we're introduced to a picture of David Charbonneau and again @ 16:44. However, @ 17:04 the same person/photo is captioned as “Drake Deming”.

[@_John_Sean_Walker]

Thank you Dr. Becky.

[@zimmy1958]

I so enjoy your videos. THANKS

[@williambowman1317]

Great summary of a field that has just exploded in recent years. Thank you for making this video. At 17:03, you have David Charbonneau's picture above Drake Deming's name. I think Drake, Joe, and Sara would all find this very humorous.

[@elmuziko]

Great video. Thorough, fun and easy to follow. Thanks to you I've now got video killed the radio star in my head

[@billbaggins]

Fascinating stuff. The variety of exoplanets and the methods of discovery are almost as numerous as the odd names of astronomers and astrophysicists.

[@sanjchiro]

Between Bruno and Newton there was a certain Tuscan gentleman called Galileo Galleli who was also suppressed, but mercifully not burnt alive.

[@der0hund]

Thank you for this video! It is a very interresting review of the history of the research of exoplanets. A friend of mine once told me, that he was attending a conference, where everybody was talking about the possibility of detecting an exoplanet. Everybody assumed, that every planetary system would reseble ours, and then somebody put a slide on the overhead projector "Planet detected around 51 Pegasi..." and everybody in the room realized instantly, that all their asumptions were rubbish. I remember this story very often. I am starting to work on a lection about aliens, and it reminds me, to always expect the unexpected... Once more: thank you very much!

[@Kettenhund31]

Brilliant!!!

[@GerardoJimenezGuitarrista]

Beautiful the way you explain! Greetings from Costa Rica 🇨🇷 🎶🎵 Saludos cordiales!

[@zidaryn]

I remember playing EVE and checking light data for transits. Was neat. And a great collaboration on the games part.

[@roysmith-jaynes7681]

That was highly enjoyable and informative delivered in your delightfully clear 'down-to-Earth' style. Thanks for that. I bought and read your book, enjoyed it, and look forward to your next lavishly illustrated version. However, I'm a little confused by a paragraph on Page 60 where you state that Voyager 1 would take 74000 years to reach Alpha Centauri but would only take 40000 years to pass close to a star in Ursa Major that is much further away. Is this a lack of common sense on my part or a typo?

[@mhorram]

Speaking of the Nobel Prize, I can hardly wait for you to publish your landmark tome: Philosophiae Naturalis Principia De Unguiculis Metalli Perpoliendi Pro Bono Physiciorum (The Natural Philosophy of Fingernail Polishing for Scientists). Sir Isaac Newton eat your hear out! Truly, science will never be the same.

[@DrBecky]

Haha! 😂 I’m definitely stealing that

[@mhorram]

@@DrBecky Glad my comment fulfilled it's intended purpose Dr. B. Remember that Nobel Laureates have to deliver a presentation on the topic for which they were awarded their prize. Maybe when your talk ends and the scientists shuffle out of the room, their eyes will be dry but I bet their fingernails won't be.

[@Biomirth]

...Calculations of the area under the curve of a pinky nail: Integrals of Follicular Magnitude.

[@mhorram]

​@@Biomirth Well, . . . ya, that goes without saying. Come to think of it; I've never said that. So it must be true. I think the good doctor would do better to discuss her famous Becky Uncertainty Principle: "You can know the position of the fingernail, you can know the speed of the fingernail painting brush but you can't at the same time know whether the colour in the Revlon bottle will match your apparel." This principle should not be confused with the Becky Exclusion Principle which states: No one fingernail can be two different colours at the same time. Finally, there is the Becky's Cat Experiment. This is more a thought experiment than anything else. You will see why presently. It goes like this: If Dr. Becky takes her cat and paints 1/2 his nails with fingernail paint and the other half with catnip and then puts him in an enclosure that is air tight and non-transparent, the cat will be in a state of quantum superposition (Not surprising, cats always think they are superior). There will be a cat that is normal and a cat that is totally drunk from the fumes of the fingernail paint and catnip. When she opens the top of the enclosure she will fall down laughing at the antics going on in the box. This happens because she has collapsed the Behave Wave (and herself). The cat must behave according to the laws of biochemistry (i.e. totally intoxicated). Hopefully, you can see that this is only a thought experiment because any real cat would claw or gnaw halfway up your arm if you tried to paint its nails. The real mystery is what happened to the other cat in the box? Who stole the other cat? It can't have disappeared. Physics tells us that matter can't be created or destroyed (cats can only be neutered or spaded). I suspect the cat will show up someday and I wouldn't be surprised if some of the scientists at her Nobel Prize presentation didn't console her with this information. Even so, I think it would still be worth her while to put a picture of the missing cat on posters and on milk cartons. By the way, does anyone know if this 'disappeared' cat would be made of antimatter. If so, maybe the poster/milk carton idea is a bad one.

[@isabelab6851]

Peter Shearer although it is funny...and I totally appreciate the humor as I am into makeup and fashion big time...but part of me feels sad that women’s achievements are linked to nonscientific endeavors. I hope she has a Nobel prize for her scientific work!

[@hebl47]

Dr. Becky - a channel that mainly gives you two things: A lot of knowledge about astronomy and great earworms!

[@yak2073]

Great, Viedeo👍!! Exoplanets are so cool. And it would be so fantastic to visit this Worlds😎. Some of the Facts i really diden´t no. But now i do, thnks for this😀^^

[@MrAB-wf5sf]

Dr.becky when u getting Nobel prize . I wish u will get this .u have pure heart .

[@jpgolan1944]

Thanks! Great presentation, as always (ans I LOVE the Harry Potter shirt!)

[@marion.saturn]

I don't understand why we didn't learn about that in school...This is such an interesting topic!

[@Veptis]

The biggest step will be to have a mission to proxima that returns images within 60years of the system close on and uses its own computational power to enter orbit of a different star or even planet.

[@Ed-oe7fb]

The ESA cheops mission will produce some great results as well. I love your channel and your voice 😀

[@pantherplatform]

Did you make all these videos back to back?

[@TheOicyu812]

14:48 - Sylvain Korzennik looks an awful lot like Binky from Life In Hell.

[@movax20h]

She pronounces this name totally wrong tho. rz is a single sound, it is not r-z, but instead something like a first sound of the name Jeannette / Janet. A bit strong than giant, or badge.

[@TraneFrancks]

That Nimbus 2020 looks like a slick bit of kit.

[@rhoddryice5412]

I'm sure a Nimbus 2020 will take us to Proxima and back in notime.

[@briansmith9439]

Fascinating backstory to the discovery of the first exoplanet. Has there ever been an attempt to construct a model of the Sun showing the 'wobble' caused by the orbits of our several planets? I imagine it would be quite irregular due to the different orbits.

[@russellwoodstechno]

you should offer the audio of your vids as a podcast.

[@reggieshmeggie4219]

This is so interesting :)

[@ronaleck9777]

Sr Becky ,really enjoy your channel , I can fallow you , not understand all what you saying,,,so i need to find out more , you help me to use ,,my mind more , thank you

[@sherlockholmeslives.1605]

Hans Bethe won the Noble Prize in 1967 about 28 years after his work on stellar evolution in 1939.

[@GySgtRay]

Dear Dr. Becky, you make Astrophysics very interesting and understandable! I enjoy your videos. OK........I also love your accent and you're quite very attractive! LOL! This video on exoplanets is very interesting!!

[@nishitd]

Did anyone else just love the way Dr Becky says "sun"? It's a very peculiar observation but I love it anyway

[@gerhardkraider]

Dr. Becky, I really enjoyed "Space: 10 Things You Should Know" in the audiobook version on my daily commute. But only like two hours of play time?! Come on, you can´t just get people hooked, and give them only two hours of astrophysics awesomeness! Give us more, please continue writing books for the greater public!

[@DrBecky]

Haha! I’ll try and make my next one longer 😂

[@qa6theory664]

27:17 oh my celestial sightings! Love that Harry Potter T-shirt, with that ancient gismo geo-scoptical tention rod! (Broom craft).

[@graphosxp]

Thank you for not using "meme" video clip inserts like you have done in past videos! I'm ashamed to admit that 90% of the stories in this video were unknown to me. I do though remember when Hubble had mirror problems and the "government does best when government does least" adherents were as giddy as can be.

[@blendonator]

Curious, but does the eye of the explosion from a star, specifically the empty space, reveal anything in particular about the properties of the chain reaction of it going nova, based on which sides are pushed out first/faster, or something similar?

[@jameskessler8102]

Your the best!!!!

[@michaelsommers2356]

Your book is out in the US now; I just ordered it from Amazon.

[@kapsi]

This is very exciting, I wonder how these results influence the Fermi paradox, for example if we live on a one-in-a-million planet.

[@bigredbeard8283]

Dr. Becky, Has there ever been any research done into the likely hood of life on these planets that would have the presence of water? Further, would the size or gravity level of the planets dictate the probability of them being able to leave their own planet (if they were a space faring civilization). Thought behind that was if there was a super Earth X.0 found but it happened to be twice or more the size of earth but showed definite signs of water or even life (detection of non-natural chemicals in the atmosphere), would the size or relative gravity level of that planet dictate the likelyhood of them breaking orbit or even achieving flight?

[@metarus208]

Subrahmanyan Chandrasekhar got his Nobel Peace Prize in Physics in 1983 ... 50 years after his discovery of how relativity predicts the collapse of massive stars into a singularity.

[@denmaroca2584]

Exoplanets are not designated 'b', 'c', 'd', etc based on their distance from their host star but by the order of their discovery ('b' first). Only if two or more are discovered at the same time is the distance taken into account. For instance, the planets orbiting 55 Cancri are (in order of their nearness to the star) 'e' (discovered 2004), 'b' (1996), 'c' (2002), 'f' (2007) and 'd' (same time as 'c'). 55 Cancri is actually named Copernicus and the planets are named Janssen, Galileo, Brahe, Harriot, and Lipperhey. 51 Pegasi is named Helvetios and 51 Pegsi b Dimidium. PSR1257+12 has the name Lich and its planets Draugr, Poltergeist and Phobetor. In works aimed at the general public you might want to consider using their names as well as their catalog designations.

[@nmccw3245]

The Hubble Space Telescope became instrumental... A lofty goal for an instrument. :)

[@caitlinaschliman1849]

exoplanets aren't really my thing, but I quite enjoyed this video about them. go dr. becky for making it interesting! A commenter earlier said your book is available now in the US. Is that right? Because excuse me, I need a copy asap.