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.

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 ...

Space scientists say they have located a planet killer capable of ripping worlds to pieces. Researchers believe they've found ...

Co-author Martin Guerrero from the Institute of Astrophysics of Andalusia told Phys.org that debris from the shattered planet ...

About 650 light-years from here, in the constellation Aquarius, lies the planetary nebula Caldwell 63, commonly known as the ...

NASA's most remarkable achievements include launching Explorer 1 in 1958, the 1969 Apollo 11 moon landing, and the Hubble ...

XRISM has uncovered how galaxy clusters evolve—violent mergers create turbulence, preventing hot gas from cooling. This ...