Is there a limit to how small life can be? Or how big? Neil deGrasse Tyson and Chuck Nice break down why all craters on the moon are round, the scale to life, and why the length of the day isn’t 24 hours.

Science, pop culture, and comedy collide on StarTalk Radio! Neil deGrasse Tyson, astrophysicist and Director of New York's Hayden Planetarium, and his comic co-hosts, guest celebrities, and scientific experts explore astronomy, physics, and everything else there is to know about life in the universe. New episodes premiere Tuesdays. Keep Looking Up! 

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