Astronomers Find a 'Break' in One of the Milky Way's Spiral Arms.

Unlocking the Secrets of Earth’s Magnetic Field From 9,000-Year-Old Recordings

7 Things You Didn’t Know About This Week’s ‘Blue Moon’ (And When To See It Rise)

Saturn’s rippling rings point to massive, soupy core hidden inside — Not only does the planet’s core seem sludgy, it also appears to extend across 60 percent of the planet’s diameter, according to new research.