So like, how does one scan those asteroids?

Checked your site.......oops sorry

Wow just checked he sits WAHOO it's gonna take me on a journey,thanks again.

Well done,I like the interaction guys. Thanks

Well

Hi if a recollapsing universe is kinda stuck in a cycle of birth and death would it eventually die out kinda like a bouncy ball slowly coming to a rest?

The us could rent out starships to all nations

United nations is a club of nations do your jobs.

I think if we could set up a refinement platform at L4 or L5, we could dramatically reduce costs. I'm sure there's plenty to harvest already lingering around in those areas, reasonably close in terms of Delta-V cost from platform to the asteroid(s) being harvested. Seems like there's dozens of ways to approach the problem and in all of them, the upfront cost would be truly enormous and it would certainly be one of (if not THE) greatest undertakings in the history of our species thus far. The long-term profitability isn't in question, in my opinion this sort of industry is inevitable in lieu of how it would enhance the productivity and efficiency of space-related infrastructure - but I don't think any potential investors are going to live long enough to be sipping martinis on a yacht they bought with space rock money; and that's the real issue, I think. I'm sure if we can get it done just once and demonstrate its uses, it'll put a crack and a leak in the metaphorical dam. After that, it's only a matter of time before it bursts - and space truckin becomes a literal job.

Creating a new definition of a planet just so school kids won’t have to memorize more planet names is beyond stupid. That’s not scientific at all. If Earth were moved to the Kuiper Belt, it wouldn’t be a planet either. Planetary scientists all unanimously reject the IAU definition because members of the IAU don’t study planets. Would you accept having eight galaxies in the universe because of a new galaxy definition from a planetary scientist? Probably not. There are hundreds of planets in our solar system. Just get used to it. m.kzbin.info/www/bejne/mHexn5iBaJJoe9E&pp=ygUQUGx1dG8gc3RhciBzdHVmZg%3D%3D

I love that they talk as if someone will see this in the distant future when COVID doesn't exist. Love it as I am enjoying all of their videos now before grad school 😂😂

I love telescope science!

Just curious how did you find these numbers? thanks!

Hello students.

Thank you for the video. If you want to know what this "very effective" (namely imperatively high in priority, important and scientifically ethical) reason is that solves Fermi's Paradox and prevents civilizations from trying to spread for moral reasons, then search for the phrase "Ethics on Cosmic Scale" to find out about that, together with an elaborate explanation and considerations on it. I found out about this channel because I'm looking every day for videos and content on this topic in order to inform people on this matter.

You seem to value humanity a whole lot more than I've come to value it in my 80 years of experience.

Looooool

Ur mum ha got him

Bob

Hello

Essential measures--part of the space infra & economy 🌌

The Venus runaway greenhouse is a myth - as illustrated in my video ... kzbin.info/www/bejne/b3TCk6SEj9CIoaM

thank u for this!

Amazing explanation

Is this a long lost SNL episode, circa 1979?

Hello from Finland!

This video is great!!! In school im doing a project about navigation in ancient Australia and I'm using this video a lot.

Get sonned paul

*Promosm* ☺️

this is gripping

Prof Paul, I came from Edx ..... Thank you for all your great work, It would be great to consider making an online degree ( Bachelors and Masters ) from ANU .... It would be magnificent

YAH

Brown Dwarf “comet” UN271

Its hard to understand when the planet shirt guy talks but well explained...

Great Stuff, Thanks for sharing the wonder of it all ! 5:00 showing "classically recognizable" reference features and mapping angles /distances to the feature you are discussing is REALLY helpful. Some of the features you spoke of sound 'fundamental' but are 'news to me'; Maps from Orion to 'the Orion Nebula' or Southern Cross to "Jewelry Box' could also be a big help ? Wiki : The Large Magellanic Cloud (LMC), or Nubecula Major is a satellite galaxy of the Milky Way. At a distance of around 50 kiloparsecs (≈160,000 light-years), the LMC is the second- or third-closest galaxy to the Milky Way, after the Sagittarius Dwarf Spheroidal (~16 kpc) and the possible dwarf irregular galaxy known as the Canis Major Overdensity. Based on the D25 isophote at the B-band (445 nm wavelength of light), the Large Magellanic Cloud is approximately 9.86 kiloparsecs (32,200 light-years) across. It is roughly a hundredth as massive as the Milky Way and is the fourth-largest galaxy in the Local Group, after the Andromeda Galaxy (M31), the Milky Way and the Triangulum Galaxy (M33). The LMC is classified as a Magellanic spiral. It contains a stellar bar that is geometrically off center, suggesting that it was a barred dwarf spiral galaxy before its spiral arms were disrupted, likely by tidal interactions from the Small Magellanic Cloud (SMC) and the Milky Way's gravity. With a declination of about −70°, the LMC is visible as a faint "cloud" from the southern hemisphere of the Earth and from as far north as 20° N. It straddles the constellations Dorado and Mensa and has an apparent length of about 10° to the naked eye, 20 times the Moon's diameter, from dark sites away from light pollution. The Milky Way and the LMC are predicted to merge in approximately 2.4 billion years.

Thanks! This is great for our Science class!

AWESOME ! Thanks ! B-) So given decent to great conditions, a human might typically be able to behold 2,500-4,500 stars at 'once. !?! Are some of them actually galaxies, or is that an additional other number ? Though 'just' an amateur, I'm a tiny bit embarrassed to have had no clue what that number was; I suppose it varies so much as one gets closer to the cities.

Thanks. Most of the info on YT about this is too simple. There could be, as you suggested at the end, planetary migration. Another possibility would be, if the star had the equivalent of the asteroid belt or Oort Cloud, disruption by a passing rogue object bombarding the inner planets with volatiles. More speculatively, if interplanetary travel by post-biological entities becomes possible, planets around red dwarfs might be the best candidates for their bases, on which they could peacefully advance into the very far future while their original star goes into expansion. Surprised that the winds around tidally locked are mild. I always imagined that the heat difference between the Sun side and the space side would result in extreme winds.

So, this ignores atmosphere, right?

but there is generally a lot of light absorbed before it gets it us. what do we do about it?

Key is LOW-COST Optical Terminal Architectures that can be replicated in 10's to 100's quantities, be flexible with user Transceivers, and be Up-gradable (or scalable).

how do you get the masses of the black holes by looking at the graph ?

ok

The Asteroid Belt Between Mars and Jupiter, was once Krypton. It was the Electro magnetic exchange with Mars that Blew it up. Thats why Mars lost the Magnetic Field. And is Scared by Huge Lightnings all over the Surface (watch Thunderbolts project Planet mars). The "God of War" who killed another "God" (Planet). Krypton Blew up because it was overloaded, kind of like what happens in a Nuclear explosion. Kryptons Magnetic Energy (Gravity) became so high, that it imploded on itself, before it exploded into the Asteroid belt.

Do you have a number or any social media account?

‘sup?.yo! cool iew! :))

The Earth is cooler w the atmos/GHGs/albedo not warmer. To perform as advertised the GHGs require "extra" energy upwelling from the surface radiating as a black body. The kinetic heat transfer processes of the contiguous atmos molecules render that scenario impossible. No greenhouse effect, no GHG heating, no man/CO2 driven climate change or Gorebal warming.

Any climate data more than 200 years in the past is speculative crap.

Venus, we are told, has an atmosphere that is almost pure carbon dioxide and an extremely high surface temperature, 750 K, and this is allegedly due to the radiative greenhouse effect, RGHE. But the only apparent defense is, “Well, WHAT else could it BE?!” (besides/also molten core volcanism) Well, what follows is the else it could be: (Q = U * A * ΔT) aka a contiguous participating media. Venus is 70% of the Earth’s distance to the sun, its average solar constant/irradiance is about twice as intense as that of earth, 2,602 W/m^2 as opposed to 1,361 W/m^2. But the albedo of Venus is 0.77 compared to 0.31 for the Earth - or - Venus 601.5 W/m^2 net ASR (absorbed solar radiation) compared to Earth 943.9 W/m^2 net ASR. The Venusian atmosphere is 250 km thick as opposed to Earth’s at 100 km. Picture how hot you would get stacking 1.5 more blankets on your bed. RGHE’s got jack to do with it, it’s all Q = U * A * ΔT. The thermal conductivity of carbon dioxide is about half that of air, 0.0146 W/m-K as opposed to 0.0240 W/m-K so it takes twice the ΔT/m to move the same kJ from surface to ToA. Put the higher irradiance & albedo (lower Q = lower ΔT), thickness (greater thickness increases ΔT) and conductivity (lower conductivity raises ΔT) all together: 601.5/943.9 * 250/100 * 0.0240/0.0146 = 2.61. So, Q = U * A * ΔT suggests that the Venusian ΔT would be 2.61 times greater than that of Earth. If the surface of the Earth is 15C/288K and ToA is effectively 0K then Earth ΔT = 288C. Venus ΔT would be 2.61 * 288 C = 748.8 K surface temperature. All explained, no need for any S-B BB LWIR RGHE hocus pocus. Simplest explanation for the observation.

Handwavium horse manure!