Podcaster: Steve Nerlich
Title: Cheap Astronomy – Dear CA #64: Back To Basics
Organization: Cheap Astronomy
Description: In the gutter, looking up at the stars.
– So the water came from asteroids now?
Yes, or at least that’s some latest thinking. As we we’ve discussed previously on Cheap Astronomy, most astronomers think that all the water on Earth must have come from falling comets whereas most geologists – those people who are always looking down rather than up think the water was already contained within the primordial matter than accreted together to form the Earth.
– What are the Voyagers learning about interstellar space?
It was announced in August 2012 that Voyager 1 crossed over into interstellar space, although no one was able to confirm that until an announcement in 2014. It was announced in December 2018 that Voyager 2 has crossed over, apparently on the 5th of November 2018.
Bio: Cheap Astronomy presents a podcast about nothing
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365 Days of Astronomy
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