Possible Life Under Europa's Ice, Pilotless Alien Spaceships, Hawking Radiation Explained | Q&A 359

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Can fish or other marine life realistically exist under the ice of Europa or Enceladus? Can we be visited by an alien spaceship but with no pilot? What is the most common misconception about Hawking radiation? And in Q&A+, which sci-fi book best describes our world in a few hundred years?

00:00 Start
00:31 [Aaron Sokol] How big can fireballs be?
02:15 [Jay Lambert] Can fish exist in the oceans of Europa or Enceladus?
05:11 [Santiago T] How does gravitational lensing work?
06:35 [Taco1011] Is it possible that we get visited by an alien spaceship with no pilot?
10:49 [Eric Poot] How does Hawking radiation work?

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