GUIDE TO EXOPLANETS - an astrophysics lesson! (did someone say aliens?)

[@sadcypher8048]

4:58 “you can tell im not an artist” every physics prof ever when having to draw concepts

[@PaigeY]

sadcypher ahaha uh oh I’ve morphed into an old professor 😂 I salute anybody who is skilled at both physics and art!

[@swarna5353]

@@PaigeY my cousin is the *most* annoying person when he starts talking about physics; he never stops!😅. He is SO good in sketching, its honestly SO impressive😃

[@leexster]

Astrophysics honestly sounds like such an interesting degree. Pity my math is way too bad for that hahaha

[@PaigeY]

leexster haha it is very maths heavy! But lectures are never boring, that’s for sure ☺️

[@PsychoSocialCreation]

I love when I can see a planet with gravitational microlensing wow ⭐️

[@Simplebilly]

PsychoSocialCreation yes!

[@camembertfanpage]

4:08 "all diagrams are NOT to scale" oh, thanks for clarifying, I thought we were actually this big :DDD Paige's videos are always my favourite ones on the StudyTube Project since I'm personally interested in natural sciences more than in arts & humanities, which are the majority of the videos

[@PaigeY]

Haha I apologise for my sarcasm 😂

[@hannah3536]

I absolutely love this. My second-year project was a literature review on the search for exoplanets so this was giving flashbacks As a fellow final year physicist I wish you the best of luck for your exams

[@PaigeY]

Hannah thank you! Good luck with your exams too 💗

[@francescaolia]

I am 14, and I want to be an astronaut one day. I know that this is kinda stupid but stars, space, galaxies, planets and the unknown are things that excite me, they seem to be really interesting. The thing is that I am quite good at school (only quite), but I am actually dumb so I am not going to be an astronaut for sure. Interesting video Paige! All the love from Italy ❤️

[@PaigeY]

Sounds reasonable to me, those things excite me too! (also don’t put yourself down, I’m sure you’re capable of more than you think! We’re all a lil bit dumb but we gotta aim high! 🌟)

[@ellajument]

After a brief bit of research, I like Crux and Eridanus! I’m really excited you’re sharing a bit of your degree with us- I became super curious about astrophysics after reading A Wrinkle in Time and watching a ton of Carl Sagan videos, and listening to you explain what you love learning about is wonderful! Much appreciated, good luck with your exams!!! ✨

[@Laura-bw1mv]

My fav constellation is definitely Cassiopeia! Because I first discovered it with a good friend and my brother, and Cassiopeia is next to the Andromeda Galaxy and Orion. So it's quite easy to find :)

[@mika-ju5bx]

I’m studying physics and astronomy this fall😁. Also, Ursa Major is my fav one cuz it’s a literal saucepan in the sky.

[@feuertatze]

my favourite constellation is probably Cassiopeia because i can usually see it from my skylight before i go to sleep!

[@whatthe712]

i’m so glad you guys made this video!!! thank you paige!

[@PaigeY]

Eve Moor glad you enjoyed!!

[@1997rock4ever]

This was a great lecture Paige! Thank you for your time. I'm a graduate molecular biology student and I was reading about antimatter recently. Interestingly enough, I came across the theory that an extraterrestrial life form may also be made up of antimatter instead of matter as we would expect. Because I am not the most knowledgeable in this area, do you think that would actually be possible considering the properties of the antimatter? I'm actually willing to hear anybody's ideas on the topic if you know or have read about it. Thank you.

[@beatricegiglio772]

I really loved watching this video

[@francescaafruni3273]

Loooved this Paige!! If you could you should give some advice on how astrophysics/maths/physics students at uni revise?? Because that would be so helpful! I always struggle a little bit before exams ahah

[@cadenwest1186]

My favourite constellation is Cassiopeia 🌌 This was a really interesting video thank you

[@Laura-bw1mv]

Mine too!!

[@rondoflicflac]

Your 5th point reminded me of the film Contact!!!

[@camembertfanpage]

I still have a few questions, if anyone knows the answers and would like to respond: Why is it assumed that 20% of stars have an exoplanet in the habitable zone? How can an exoplanet's distance from the star be measured? And how fast do stars usually "wobble"? Does the changing distance from the planets influence the temperature on them? Sorry for the questions, I'm just reaaally interested! :)

[@PaigeY]

Thanks for your questions! We get the period of a planet’s orbit (how long it takes to make one complete orbit) from radial velocity measurements of the star. Using the period, we can calculate the distance between an exoplanet and its parent star by using an equation called Kepler’s third law. We get the 20% estimate by extrapolating data we currently have and allowing for various biases in methods, e.g. the transit method is more likely to detect large planets which are closer to their parent star since they will block the most light and most dramatically alter the light curve. The period of a star’s “wobble” depends on the distance between the explanet and the star (this goes back to the Kepler equation I just mentioned). Exoplanets that are closer to stars will cause the stars to wobble faster! Planets closer to a star are hotter than planets further away from a star because a greater proportion of a star’s energy reaches planets closer to it, and that energy causes an increase in temperature!

[@kawaiikitty4569]

Yay Paige! This is what I hoped you would do, helps you revise by explaining to us!

[@zed3063]

This is so interesting, great teacher!

[@mathildechp2402]

Hello Paige, thanks a lot for this video, you could definitely be a teacher!! I just have a few questions... First of all, what would happen if the Earth was to lose the moon? Would we lose the 24h rhythm? Is it due to this wobbling or would the earth still rotate on itself? Second question, you said that the fact that we don't detect that many exoplanets thanks to the pulsar timing method might mean that it's less likely for an exoplanet to rotate around pulsars: what is the proportion of pulsars compared to 'normal' stars? Could it be that we detect fewer exoplanets thanks to pulsar timing because there are actually fewer pulsars? Thank you a lot for your video again, it was really interesting, even for a biology student who doesn't know anything about space x)

[@mathildechp2402]

@TheRenaissanceman65 Thank you very much for taking the time to answer my questions! It was a very thorough explanation, and very clear too so thank you again :)

[@lucierousseau1080]

could you make more astrophysics videos on here ? I know nothing about it but have always had a special interest for this field even though maths and physics hated me in high school haha! loved this video and the previous one !

[@MrBobbyANDCookie]

You're so good at explaining astrophysics and you do it with so much enthusiasm! You should totally continue with these videos :) - from a fellow astrophysics student :)

[@oceanheartz717]

this was really interesting! and you explained the topic very well for a non-astrophysics student :)

[@ellevasc]

Your are a great teacher Paige! Love your videos and kind regards from Brazil ❣️

[@joulenewton3400]

Please can u make a video about relativity ( special and general ) and quantum physics. Please please please🙇🙇🙇

[@rondoflicflac]

Love ya Paige! Thanks for the video!

[@obito7365]

what all subjects are their in NATURAL SCIENCES? and can one do both medschool + physics at cambridge?

[@jessh5111]

I don't think so no. I believe it's more maths and physics based rather than human biology.

[@obito7365]

@TheRenaissanceman65 Yes, i think it was before you helped me out.

[@sheethal4419]

Very well explained Paige!

[@Missmary852]

I always wanted to ask how scientists process "things" like the universe,evolution e.t.c. How do you keep yourself from getting an existential crisis everytime you're dealing with huge numbers for example? Even the distance between earth and the moon is sth crazy to think about, let alone other galaxies.

[@camembertfanpage]

We don't process it, we do get existential crises. We're all slowly going insane xD

[@PaigeY]

Yeah I don’t stop to think about it too hard or I end up feeling very very very insignificant 😂😂

[@MrBobbyANDCookie]

I don't think about it very often, because when I do, my brain hurts.

[@Missmary852]

@@PaigeY kinda like how journalists don't think about the tragic stories when they report them

[@anwesaroy6998]

Paigey please post more lectures...

[@almedin3852]

Can you make a video about our galaxy? 🤗❤️ Greetings from Bosnia and Herzegovina!❤️

[@PaigeY]

Almedin oooo maybe! I am a big fan of the Milky Way (chocolate bar & system of stars) 🌌

[@RosieCrawford]

Paige this was so interesting!

[@PaigeY]

Rosie Crawford thanks Rosie! I’ve been to countless talks on this stuff haha

[@juliaromocea3298]

My fav constellation is Orion too 😆

[@joshbrunton8818]

*demonetised for saying coronagraph*

[@aoifepowerbreen1355]

Aka the Goldilocks zone 👌🐻

[@pivojwpvpjwiefn]

Hey Paige!

[@PaigeY]

Monty Austin hey hey!

[@TheHollyChronicle]

Did someone say aliens :0

[@PaigeY]

👽👽👽

[@veronikapopova6284]

Cool

[@rondoflicflac]

💛💛💛

[@AceHardy]

✍️

[@emmadavison4042]

Love to see a fellow saxophonist 😂🎷

[@PaigeY]

Gotta love the sax, keeps me entertained during lockdown! Not sure my parents are such big fans, it makes a racket 😅

[@emmadavison4042]

PaigeY. That is a mood - my parents must hate me when I cycle though piano, saxophone and ukulele at least three times a day 😂😂

[@joshbrunton8818]

VIVA LA PLUTO

[@dylanpaterson3930]

Habitable planets are useful for human colonisation once we end up ruining this planet and having to abandon it