Light pollution, the term for the brightening of the night sky by unnatural lights, is increasing globally. In North America, only 20% of people can see the Milky Way, generally in rural areas ...

They then evaluated a wide range of sunscreens, including natural and organic brands, for both sun protection efficacy and cosmetic properties (texture, scent, application, look and feel of skin ...

Nantucket, with its dark sky, is unique: it’s one of the few places in eastern Massachusetts where people can see the Milky Way with the naked eye. But light pollution is threatening that clear ...

Because the Milky Way hasn’t had a merger in at least one billion years, all three rotations should have lined up by now. How to hunt for a black hole with a telescope the size of Earth ...

Astronomers have spotted the most massive known stellar black hole in the Milky Way galaxy after detecting an unusual wobble in space. The so-called "sleeping giant," named Gaia BH3, has a mass ...