Triton was discovered in 1846 by the British astronomer William Lassell, but much about Neptune’s largest moon still remains a mystery. A flyby by NASA's Voyager 2 spacecraft in 1989 offered a quick ...

Since the Moon is approaching its full phase, its nightly journey promises excellent naked-eye stargazing, inviting ...

Looking for a sky event this week? Check out our full Sky This Week column. November 1: Dip into the Bay of Rainbows Daylight ...

New images released Wednesday from NASA's James Webb Space Telescope are revealing Neptune, and the planet's hard-to-detect rings, in a fresh light. "It has been three decades since we last saw these ...

This article lists the top 7 largest moons in our Solar System, detailing their size, the planet they orbit, and key ...