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.

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

The Habitable Worlds Observatory is poised to tell us whether Earthlike planets are common—if it can get off the ground ...

When you think of telescopes in space, you probably think of the Hubble Space Telescope and its younger, larger sibling, the ...