This lifespan began roughly 4.6 billion years ago, and will continue for about another 4.5 - 5.5 billion years, when it will deplete its supply of hydrogen, helium, and collapse into a white dwarf.

The search for dark matter requires all the best models, theories, and ideas we can throw at it. A new paper by Julia Monika ...

Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and ...

Ralph Waldo Emerson once penned the words “If the stars should appear one night in a thousand years, how would men believe ...