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Tag: cosmic
Scientists use cosmic rays to date earliest evidence of humans in Europe
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Stone tools unearthed in a quarry in Ukraine belonged to ancient humans who used them more than a million years ago, according to new research. The fresh dating analysis of the artifacts reveals the earliest known presence of […]
These supernovas are whipping up a storm, contributing to cosmic life and death
Astronomers have discovered a hitherto unknown source of the cosmic dust. As to why this dust is important to track? Well, these particles basically act as building blocks for stars. The international team found that such dust can be created by a type of cosmic explosion that occurs when a dead white dwarf star strips […]
Dark matter detected dangling from the cosmic web for 1st time
For the first time, astronomers have detected dark matter hanging from massive filaments that stretch across the universe and form a “cosmic web” that trap galaxies like morning dew on a spiderweb. Researchers from Yonsei University in Seoul, South Korea, used the Subaru Telescope — an 8.2-meter optical-infrared telescope near the summit of Maunakea in […]
Cosmic Super Bowl? The Milky Way’s black hole is shaping spacetime into a football
The supermassive black hole at the center of our Milky Way galaxy is spinning so fast that it is warping spacetime into an oval shape reminiscent of an American football (or a rugby ball for any non-American readers!. The finding comes from a careful study of radio and X-ray observations. According to Albert Einstein‘s theory […]
Where do cosmic rays come from?
Earth is under constant bombardment by cosmic rays, showers of high-energy particles that blast our planet from all directions at near light speed. While this might sound like the precursor to a sci-fi alien invasion, it is a real phenomenon that scientists have been aware of for over a century. Despite their dramatic description, cosmic […]
Hubble Space Telescope spots a cosmic ‘tug of war’ between galaxies that could lead to a collision (image)
NASA’s Hubble Space Telescope has zoomed in on one side of a cosmic tug-of-war that will rage between two galaxies for tens of millions of years. Frustratingly, this is one competition in which a clear winner may never emerge, as the two galaxies could well be drawn together to merge into one at the end […]
How do galaxies grow while ensnared in the universe’s cosmic web?
Just like being trapped within a spider’s web drastically changes a fly’s life, galaxies ensnared in the vast cosmic web are dramatically and irreversibly altered. Now, scientists from the University of Kansas are aiming to better understand the mechanisms at play in shaping clusters of galaxies as they travel through a cosmic web of different […]
Vampire black hole is a ‘cosmic particle accelerator’ that may solve a longstanding astronomy mystery
Scientists may have found evidence that vampire black holes feeding on their victim stars — so-called microquasars — are the cosmic particle accelerators responsible for mysterious high-energy cosmic rays we see bombarding Earth. These stellar mass black holes exist in binary systems with a supergiant star from which they greedily strip material. Some of that […]
Scientists discover cosmic fossil created by erupting supermassive black hole
NASA scientists have observed a stunning cosmic fossil that was created when a supermassive black hole erupted over 5 million years ago. The team at the space agency’s Goddard Space Flight Center used the X-ray Multi-Mirror Mission (XMM-Newton) space telescope with help from NASA’s Chandra X-ray Observatory to spot the X-rays that outline cold gas clouds in […]
Surprise gamma-ray discovery could shed light on cosmic mystery
Astronomers have discovered an unexpected and unexplained feature outside our Milky Way galaxy that’s radiating high-energy light called gamma rays. The team behind the discovery, including NASA and University of Maryland cosmologist Alexander Kashlinsky, found the gamma-ray signal while searching through 13 years of data from NASA’s Fermi Telescope. “It is a completely serendipitous discovery,” […]
The mystery of vast ‘cosmic ORCs’ — odd radio circles that encompass entire galaxies — may be solved
Scientists may finally have solved the mystery of cosmic ORCs, or “odd radio circles” as they are officially known, that are so vast they are 10 times the width of the Milky Way and can encompass entire galaxies. A team of astronomers led by University of California San Diego Professor of Astronomy and Astrophysics Alison Coil have […]