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Asked by game1pub to Viviene DC, Sheridan, ravinduranaweera, Michael S, Martin M, Mark, Kirsty L, Christie, Caroline, Alexander dB on 13 Mar 2024. This question was also asked by Soph.
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Martin McCoustra answered on 13 Mar 2024:
Science isn’t really all about learning facts… It’s more about connecting ideas and facts together to understand how things work. I’m trying to understand the role of chemistry in the working of the universe and how it allows us to learn about distant environments; how it controls star formation; and how it provides the materials for the chemical soup from which life evolves.
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Alexander De Bruin answered on 13 Mar 2024:
it’s not only bigger than you think it is, it is bigger than you /can/ think it is
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Caroline Roche answered on 13 Mar 2024:
Black Holes were first suggested back in the 1780s though they were called Dark Stars at the time.
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Ravindu Ranaweera answered on 13 Mar 2024:
There are many that we know, even more that we don’t. For me, It is the sheer size of it all.
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Michael Schubert answered on 22 Mar 2024:
Like Martin said, science is more about understanding and learning than about knowing facts! But I do know some cool space facts. For instance, did you know that scientists think there might be as many as 100 quintillion planets out there that are very similar to Earth? This is what that number looks like (so you can see how big it really is):
100,000,000,000,000,000,000
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Kirsty Lindsay answered on 27 Mar 2024:
Space isn’t really empty- there are photons and random pieces of gas and dust floating around… all the bits are just really, really, far apart!
If 2 astronauts in spacesuits lost communications they could put their helmets together and talk to each other normally ( although maybe quite loudly!) : the sound would be carried by the oxygen in the first suit to the visor, though the visor of the second suit and then into the oxygen of that suit to the ears.
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Comments
Sheridan commented on :
Michael Schubert introduces a very large number. The Gernam Enigma machine can be set up in 159 quintillion ways, so this puts into perspective these very large numbers. In fact, the German Lorenz cipher machine can be set up in 10^170 ways! this equates to more than the number of atoms in the universe. And it’s a mechanical machine, noy electronic.