Dark matter makes up 85% of the universe, but researchers, including Vera Rubin herself, historically have had a hard time ...

Newly Discovered 'Jellyfish Galaxy' Stunned Astronomers and Could Reveal a Chapter of Galactic Evolution Data from the James ...

How did a Cepheid variable star help Edwin Hubble prove the Andromeda Nebula was a galaxy? Roger BradySan Quentin, California ...