The YouTube channel Kurzgesagt has teamed up with “Writer, infant,” Tim Urban for a video comparing the size of the largest stars ever detected. This short tour of the increasingly huge stars not only ...

A neutron star is the densest object astronomers can observe directly, crushing half a million times Earth's mass into a sphere about 12 miles across, or similar in size to Manhattan Island, as shown ...

Anybody who spends time thinking about the cosmos knows what it’s like to have a brain full of black holes (in a good way). But while Sagan-ian daydreaming about the massive regions of spacetime ...