Ever wondered what it would be like to live at the very heart of our galaxy? The Milky Way’s center is a breathtaking, chaotic realm where stars are packed millions of times closer than in our solar ...

So much happened in the earliest moments of the universe. Elementary particles appeared, the first nuclei of hydrogen and ...

SAN FRANCISCO -- Five years ago, San Francisco State researcher Andisheh Mahdavi and his colleagues observed an unexpected dark core at the center of Abell 520, a cosmic "train wreck" of galaxy ...

If you want to find one of the universe’s crown jewels, you’ll first need to find a Sun-like star. There’s one pretty close to us, only about 93 million miles away, but it’s got another 5 billion ...