New posts in Galaxies

How can we detect antihydrogen?

Why is dark energy dominant between galaxies but not inside galaxies?

A star or a galaxy?

Is dark matter inside galaxies different from dark matter in intergalactic space?

Why is the distribution of dark matter in a Galaxy different from the distribution of normal matter?

Would a galaxy be visible from outside, but nearby?

Does a star need to be inside a galaxy?

Could dark matter consist of the supermassive black holes at the centers of galaxies?

Astronomical sources of muons

What is the evidence for a supermassive black hole at the center of Milky Way?