Three supermassive black holes have been spotted merging into one

Supermassive black holes occasionally devour or merge with other black holes MARK GARLICK/SCIENCE PHOTO LIBRARY Three…

Curiosity Sends Holiday Postcard from Mars

NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas at two times of…

Star that seemed to vanish more than 130 years ago is found again

An image captured by a telescope at the Grasslands Observatory in Arizona. The “x” is where…

The century-long hunt for the gigantic meteorite that vanished

It all started with an overheard conversation between some camel herders. The year was 1916, and…

ESA – Nature’s fireworks from space

As she flew 400 km above Earth at hypersonic speed, NASA astronaut Jeanette Epps caught a gigantic spark with blue and red flashes shooting…

ESA – Fireworks from space

As she flew 400 km above Earth at hypersonic speed, NASA astronaut Nichole Ayers caught a…

Star’s double explosion is first of its kind

This artist’s animation shows a hypothesized event known as a superkilonova. First, the massive star ends…

NASA to Preview US Spacewalks at Space Station in January

NASA astronauts will conduct a pair of spacewalks in January outside of the International Space Station…

Earth-directed CME from M4.2 flare forecast to produce G1 geomagnetic storm on New Year’s Day

A coronal mass ejection (CME) produced by an M4.2 solar flare from Active Region 4317 at…

A Galactic Embrace – NASA

Data from NASA’s James Webb Space Telescope and Chandra X-ray Observatory come together in this eye-catching…