New observations reveal that the relationship between ultraviolet and X-ray light in quasars has changed over billions of ...

"The sheer amount of radiated energy from these bursts is so large that you can't power them with a core collapse stellar ...

For decades, black holes have stood as the most enigmatic objects in the universe, defying our understanding of space, time, ...

In any other year, the supermassive black hole mentioned above would probably scoop the award for most striking outburst, but not in 2025. This year, that accolade goes to a flare designated ...

A remarkably clean gravitational-wave detection has confirmed long-standing predictions about black holes, including Hawking’s area theorem and Einstein’s ringdown behavior. The findings also provide ...

Astronomers analyzing data from an array of telescopes — including the W. M. Keck Observatory atop Mauna Kea on the Big ...

Get your nails done in black, from glossy finishes to stars, hearts, and subtle sparkle, this is the season’s most elegant ...

Most smaller galaxies may not have supermassive black holes in their centers, according to a recent study using NASA's Chandra X-ray Observatory. This contrasts with the common idea that nearly every ...

What’s the single most influential accessory of 2026? The smallest, most expressive canvas: the manicure. Going into the new year, nail colors, shapes, and art aren't just an afterthought; they've ...