These two images contain some of the thousands of stars from a new survey by NASA’s Chandra X-ray Observatory. This was the largest survey of star formation ever conducted in X-rays, covering some ...

A brilliant flash from deep space once baffled scientists. But now, that mystery has been solved—and it reshapes what we know about the universe’s heaviest elements. Back in December 2004, a massive ...

In an ejection that would have caused its rotation to slow, a magnetar is depicted losing material into space in this artist’s concept. The magnetar’s strong, twisted magnetic field lines (shown in ...

The Einstein Probe space telescope has captured a powerful X-ray outburst from a nearby K-type star, offering a rare, high-resolution look at how stellar magnetic fields unleash sudden bursts of ...