4+ day, 2+ hour ago   (166+ words) Researchers Giorgio Galanti (INAF) and Marco Roncadelli (INFN), in a study accepted by Physical Review Letters, propose a bold solution. Brightest gamma-ray burst ever reveals new mysteries of cosmic explosions They combine two ideas: All high-energy cosmic neutrinos are born…...

5+ day, 6+ hour ago   (404+ words) We usually depict the early Earth as a restless planet, exposed to ultraviolet radiation, struck by lightning, and constantly hit by meteorites. These widespread energy sources are typically thought to have played a role in forming life’s building blocks. But…...

5+ day, 21+ hour ago   (539+ words) For nearly sixty years, Einstein’s general relativity has offered a starkly simple picture of black holes: they are defined only by their mass and spin. Nothing else matters. Physicists call this the “no-hair theorem,” a poetic way of saying that…...

6+ day, 2+ hour ago   (667+ words) Dark matter is the universe’s great enigma. Though invisible, it outweighs ordinary matter five to one and sculpts the cosmos, holding galaxies together with its unseen gravity. Yet despite decades of searching, scientists still don’t know what it is made…...

1+ week, 3+ day ago   (679+ words) For many years, astronomers have dreamed of mapping the Universe not galaxy by galaxy, but in sweeping strokes, revealing the invisible framework of matter over billions of light-years. This dream has now advanced significantly. The result, published in The Astrophysical…...

1+ week, 4+ day ago   (647+ words) For decades, physicists have been chasing a ghost. Dark matter, an invisible substance thought to make up most of the universe’s mass, has revealed itself only through its gravitational pull on galaxies and cosmic structures. But what it actually is…...

1+ week, 5+ day ago   (219+ words) Astronomers using the James Webb Space Telescope (JWST) have uncovered compelling evidence of massive black holes in the early universe, some apparently heading toward mergers. The discovery, published August 31 in the Publications of the Astronomical Society of Japan, sheds light…...

1+ week, 6+ day ago   (377+ words) Mars has always been a planet of contrasts. Its northern hemisphere is a vast, flat lowland, while the southern half is rugged with towering mountains and deep craters. Now scientists have discovered that this asymmetry extends deep beneath the surface:…...

2+ week, 4+ day ago   (610+ words) Galaxies are often called the jewels of the universe, since they are enormous assemblies of stars, gas, dust, and dark matter, each with its own shape and history. NASA’s Chandra X-ray Observatory, in cooperation with other major telescopes, provides a…...

3+ week, 2+ day ago   (557+ words) For decades, physicists have been interested in finding out what the Universe was like in its first millionth of a second; in those very early moments after the Big Bang, matter existed in a strange, primordial state called quark-gluon plasma,…...