Using data from NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton spacecraft, astronomers have looked for the effects of massive, close-in planets...
The triple star system LTT 1445, at a distance of 22.5 light-years, hosts some of the nearest rocky planets.
This Chandra image shows the LTT 1445 system:...
The Stephan’s Quintet, the Cartwheel Galaxy, the galaxy cluster SMACS J0723.3-7327, and the Carina Nebula were among the first publicly released images...
Light from a Type Ia supernova explosion that created the supernova remnant SNR 0519-69.0 in the Large Magellanic Cloud, a satellite galaxy of the Milky...
A rare intermediate-mass black hole may have been delivered to the barred spiral galaxy NGC 4424 by another, smaller galaxy, according to an analysis of...
Zeta Ophiuchi is a very massive, hot, bright blue star that once had a companion that exploded as a supernova.
Zeta Ophiuchi was once in close orbit with...
A supermassive black hole in the center of H1821+643, a quasar about 3.4 billion light-years away from Earth, is rotating at about half the speed of light.
This...
Abell 2146 is a pair of colliding galaxy clusters located approximately 2.8 billion light-years away in the constellation of Draco.
In this composite image...
Black holes are demolishing thousands of stars in a quest to pack on weight, according to an analysis of images of 108 galaxies taken by NASA’s Chandra...
Using NASA’s Chandra X-ray Observatory, astronomers have observed a remarkable X-ray filament generated by the gamma-ray pulsar PSR J2030+4415.
PSR J2030+4415...
The binary neutron-star merger GW170817 was discovered in August 2017. Many telescopes saw different kinds of light after the discovery, but only NASA’s...
Astronomers using NASA’s Chandra X-ray Observatory have detected five X-ray events from G29-38, which is among the 100 closest white dwarfs. Their results...
A supermassive black hole with 200,000 solar masses is located in the middle of the dwarf galaxy Markarian 462 (Mrk 462), according to new research led...
Astronomers using NASA’s Chandra X-ray Observatory have found a quartet of pronounced X-ray cavities in RBS 797, a cluster of galaxies located about...
The NASA/ESA Hubble Space Telescope shot this image of the supernova remnant DEM L249.
This Hubble image shows DEM L249, a remnant of Type Ia supernova...
The Type Ia supernova remnant (SNR) G344.7-0.1 resides about 19,600 light-years away in the constellation of Scorpius.
This composite image shows SNR G344.7-0.1...
Using spectral data from the Sloan Digital Sky Survey (SDSS), the Chandra Source Catalog 2.0, and the Chandra COSMOS Legacy survey, astronomers have found...