Astronomers have long argued that dark matter is the invisible scaffolding that holds galaxies together. Without its immense gravitational pull, the galaxies’ rotating necks would force them to fly sideways. But now, scientists have found a series of galaxies that do not seem to have their dark matter completely. The latest in this string, known … Read more
NASA’s X-ray spacecraft XRISM, which stands for X-ray Imaging and Spectroscopy Mission, has observed how fast winds from a distant galaxy are exploding in the form of stars. These winds appear to travel at an incredible speed of 2 million miles per hour (3.21 million kilometers per hour). A very hot gas comes out of … Read more
It was said that it could not be done: the place was too dangerous; floods would wipe out the cameras; the system was very unpredictable. But the truth is, no one has ever tried Andi Cross tells Melissa Hobson. We were heading to Porto Jofre, known for its wild jaguars, to help the Jaguar Identification … Read more