A new method to exploit Gamma-Ray Bursts (GRBs), the most energetic explosions in the universe, as independent measurements of the Universe’s expansion rate has been discovered in optical wavelength.

ESA’s gamma-ray satellite, Integral, is fully operational. Today Integral’s first ground-breaking images of the high-energy Universe were presented in Paris, France. Astronomers call such initial ...

A thousand light years away, a pulsar called Vela flashes Earth with bright bursts of energy 11 times every second: radio waves, visible light, x-rays, and gamma rays. Astrophysicist Arache ...

Every 3 hours, NASA’s Fermi Gamma-ray Space Telescope scans the entire sky and deepens its portrait of the high-energy universe. Every year, the satellite’s scientists reanalyze all of the data it has ...

The Event Horizon Telescope, which captured the first image of a black hole, has done it again. The Earth-sized telescope ...

A nearby supernova in 2023 offered astrophysicists an excellent opportunity to test ideas about how these types of explosions boost particles, called cosmic rays, to near light-speed. But surprisingly ...

Scientists have long been aware of the massive elliptical galaxy, M87. The galaxy was first observed in the late 18th century ...

Although our galaxy's supermassive black hole is relatively placid, the center of the Milky Way wherein it resides is not a placid place. Its extreme location is rife with what can best be described ...

HAIZI MOUNTAIN, China (AP) — Astrophysicist Cao Zhen opens a steel hatch on a windswept Tibetan Plateau and climbs down a ladder into inky darkness. His flashlight picks out a boat floating on a pool ...

The pulsar Vela rests a thousand light years away from Earth in a tattered cloud of gas and dust that used to be the guts of a massive star. These magnetic field of this dense, burned-out corpse of ...

Did you know that the world around us is filled with different types of light waves ? From the warm glow of the sun to audible radio waves and invisible gamma rays, electromagnetic waves (action ...