Recent comments in /f/space

Underhill42 t1_j5398l2 wrote

Reply to comment by rumbletummy in Are Two Tidally Locked Earth in One Solar System Possible? by Thirdy-DOg

12 hours? Definitely. That's only about half a degree away in our orbit around the sun. The impact wouldn't be long in coming.

6 months though? Then it would be exactly on the opposite side of the sun, in our L3 point.

It was actually once speculated that there might be a "Mirror Earth" there, but it wouldn't be a particularly stable location, and our probes have long since confirmed there's nothing significant there.

3

Longest_Inch t1_j5392cm wrote

Reply to comment by ramriot in Ancient humans and their early depictions of the universe: “It is no exaggeration to say that astronomy has existed as an exact science for more than five millennia,” writes the late science historian John North. by clayt6

Well popular science is for the laymen like me to grasp science. It’s like comparing YA literature for kids to like Dostoevsky for AP and college students😂. Which now that I said all that you did make that point.

4

Longest_Inch t1_j538dav wrote

Reply to Ancient humans and their early depictions of the universe: “It is no exaggeration to say that astronomy has existed as an exact science for more than five millennia,” writes the late science historian John North. by clayt6

I remember reading as a kid that Homo Sapiens Sapiens became a thing roughly 50,000 years ago. Now more evidence suggest that we’ve anatomically and behaviorally the same even further back than that. No telling how long ago that there have been curious humans discovering astronomy.

3