The Chandra X-ray Observatory was launched on July 23, 1999 aboard Space Shuttle Columbia. See 25 'never-before-seen' images ...

Astronomers have been recording the signal for more than four decades, but this is the first time they've nabbed its origin.

Astronomers have uncovered a baffling cosmic anomaly — a supermassive black hole in galaxy NGC 5084 that appears to be ...

"We might have finally found the cause of a mystery that's lasted over 40 years," said researcher Sandino Estrada-Dorado.

Researchers also specula... NASA’s James Webb Space Telescope and Chandra X-ray Observatory have unveiled stunning new images of two star clusters in the Small Magellanic Cloud. NGC 602 ...

After tracking a puzzling X-ray signal from a dying star for decades, astronomers may have finally explained its source: The ...

The X-ray signal from WD 2226-210 is similar to the X-ray emissions of two other white dwarfs that do not sit within cocoons ...

NASA Chandra X-ray Observatory 和 ESA XMM-Newton 卫星的数据显示，螺旋星云 WD 2226-210 中心的一颗白矮星发出的神秘 X 射线信号来自被其引力撕裂的行星。白矮星是最黯淡的恒星之一，属于恒星核残骸 ...

Using ESA's XMM-Newton satellite and NASA's Chandra X-ray observatory, astronomers have observed a young stellar object known as HL Tauri. Results of the observation campaign, presented Feb.

Wolf 359, a red dwarf star just 7.8 light-years away, could host planets, but extreme X-ray and ultraviolet radiation make ...

It went unnoticed for years within a vast, two decade-long archive of observations by NASA's Chandra X-ray Observatory, before being unearthed by a new paper published in Monthly Notices of the ...

The research team, led by Steven Dillmann of Stanford University was scouring decades-old data from NASA's Chandra X-ray Observatory when it spotted a powerful (but brief) blast of X-rays coming ...