Mercury is tiny, barely bigger than the Moon. Its metallic core makes up 70% of the planet’s mass, vastly exceeding Earth’s ...

Rising around midnight and nearly 50° high in the south two hours before sunrise is Orion the Hunter, one of autumn's premier constellations. As the season progresses, Orion will rise earlier and ...

The night sky promises a spectacular week with heightened Northern Lights activity following the fall equinox, offering prime ...

There are designated areas in the U.S. where the night sky is so crystal clear that you can see the Milky Way galaxy ...

This year’s Chuseok full moon will be visible starting at 5:32 p.m. on the 6th (Seoul time). Korea Astronomy and Space ...

New data from the James Webb Space Telescope may solve a riddle from the universe’s beginnings. A compact, distant object ...

Cosmic dust, it turns out, isn’t made of miniature rocks. It’s fluff. A comprehensive analysis of data from space missions, ...

From a supermoon to a pair of meteor showers streaking across the night sky, here are the top astronomy events for the month of October.

A new study shows survivor stars can live billions of years longer than normal, carrying chemical fingerprints of their ...

MIT joins the consortium building the Giant Magellan Telescope, thanks to a donation by Phillip and Susan Ragon.

The crop of winners showcases a dazzling range of shots, including views of the Milky Way, comets blasted by solar wind and the elusive Spaghetti Nebula. The overall winning image, taken by Weitang ...