Scientists have long thought that the highest-energy gamma rays in space are forged in the intense furnaces of very active ...

V4641 Sagittarii is a system about 20,000 light-years from Earth, in the direction of the constellation Sagittarius. There, a black hole with the mass of about six Suns is slurping material off a ...

In a new study, scientists have found that a huge black hole - with a mass of about six Suns - is feasting upon a giant star and releasing intense radiation in deep space. The star is as big as three ...

Astronomers have made a shocking discovery that’s rewriting the way we think about cosmic powerhouses. While scientists ...

Mars’ features are starting to become visible, Mercury appears in the evening sky, and the Trifid Nebula glows in the sky ...

The source of photons with energies of up to 200 teraelectronvolts has been found to be the microquasar V4641 Sagittarii (V4641 Sgr). It lies in the background of the Sagittarius constellation ...

Seamless Wikipedia browsing. On steroids. Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface. Wikiwand ...

For a long time, astronomers believed that extremely high-energy radiation was produced only in the jets of active galaxies, far from Earth. But new observations from the High-Altitude Water Cherenkov ...