/u/slushhead_00's posts
When early astronomers (circa. 1500-1570) looked up at the night sky with primitive telescopes, how far away did they think the planets were in relation to us?
Mark as read: Add to a list
When early astronomers (circa 1800-1870) looked up in to the sky with their primitive telescopes, how far away did they think the other planets were in relation to us?
Mark as read: Add to a list
How many synthetic elements can be made? What’s the process that enables us to make them in the first place?
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list