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

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

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 ...

Above the spout, some 8° north-northwest of magnitude 2.7 Delta (δ) Sagittarii, is M20, also known as the Trifid Nebula.

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 ...

These are known as Xi1 and Xi2 Sagittarii. The chart shows a telescopic view (south appears up and east to the right) of the region around these two stars. As the Milky Way runs through this part ...

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 ...