If our Sun is a grain of sand, then how big would the Milky Way be?
EDIT: someone found a problem with my math, so I’m going to try again, but my answer is still “really freakin’ big.” That part is correct. The Sun…
What is the most terrifying alien invasion of Earth scenarios?
Any that is realistic — and, by ‘realistic’, I mean, they way we might do it. Imagine you buy a property and, while surveying the grounds, you discover…
Could mankind survive the meteor that destroyed the dinosaurs?
The species Homo sapiens? It could and almost certainly would. Bad news for everyone; minor hiccup for humanity as a whole: The K-Pg impactor would have killed in…
Does NASA refuse to use a Hubble telescope to take pictures of the Moon rovers left behind previously?
Jacob Fox is completely correct. The Hubble Space Telescope is not capable of taking pictures of the Apollo landing sites for 2 reasons: As several others have written, lunar…
Have we found life on Mars?
The Perseverance rover has just found a rock with possible signs of ancient life on Mars. It has already been hailed as the most important find ever during…
Where do black holes lead?
A black hole is not really a “hole”. A black hole is a celestial body left over from a giant star that has died where its gravity becomes so great…
Was Theia made up of entirely different material than proto-Earth, or did they share most, if not all of the same material?
Some of its pieces are still inside our planet, deep down near the core. But, let’s back up a bit. Theia was a Mars-sized planet that orbited the…
If the sun were to go out, how long would it be before we were completely destroyed?
Just 8 minutes after the Sun went out, every corner of the Earth would be in darkness. The darkness that would be noticeable at midnight would come suddenly…