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Tag: universe

Eighty-three supermassive black holes found in the distant universe

Eighty-three supermassive black holes found in the distant universe

Science
March 13 (UPI) -- Astronomers have discovered 83 new supermassive black holes in the distant universe, or early universe, representing a time when the university was less than 2 billion years old. Researchers were surprised to find so many quasars, glowing galactic nuclei powered by supermassive central black holes, in the early universe, just a few hundred million years after the Big Bang. "Understanding how black holes can form in the early universe, and just how common they are, is a challenge for our cosmological models," Michael Strauss, a professor of astrophysical sciences at Princeton University, said in a news release. Scientists found the quasars using the Subaru Telescope's Hyper Suprime-Cam. The telescope, which is operated by the National Astronomical Observatory of Japan, i...
Physicists replicate earliest days of the universe in super-chilled helium

Physicists replicate earliest days of the universe in super-chilled helium

Science
Jan. 16 (UPI) -- Scientists have for the first time triggered quantum structures long-predicted by cosmologists. Researchers at Aalto University in Denmark observed "walls bound by strings" in superfluid helium-3. The breakthrough could allows scientists to better understand what the universe looked like in its earliest days, as it quickly cooled in the wake of the Big Bang. Helium is unique in it's ability to remain a fluid even at cryogenic temperatures. When supercooled, helium becomes a superfluid, which means it boasts zero viscosity. Superfluids can flow forever without losing energy. When trapped inside a nanostructure, superfluid phases of the isotope helium-3 can help scientists study unusual quantum structures called half-quantum vortices. The movement of helium inside these vor...
Stephen Hawking's final interview: A beautiful Universe

Stephen Hawking's final interview: A beautiful Universe

Science
Last October I invited Prof Stephen Hawking to comment on the detection of gravitational waves from the collision of two neutron stars. It turned out to be his final broadcast interview.The collision was a really big story for many reasons, not least because within minutes of the detection the world's telescopes were trained on what was an incredible cosmic event.This meant that as well as detecting the ripples in space-time from the merger, astronomers could see also for the first time what happens when two incredibly massive objects come together in a process that may be the only way of creating gold and platinum in the Universe.It was definitely one for Prof Hawking to explain. Einstein's waves detected in star smashGravitational waves: A new 'tape measure'In recent years, he made comme...
Sanctuary on side of Mexican volcano could be universe model

Sanctuary on side of Mexican volcano could be universe model

Technology
Mexican archaeologists say they have excavated a stone sanctuary in a pond on the side of a volcano east of Mexico City that may have been built as a miniature model of the universe. The National Institute of Anthropology and History says the remnants of the stone "tetzacualco" were in the center of a natural pond below the Iztaccihuatl volcano at an elevation of nearly 13,000 feet. In addition to the sanctuary, decorative pieces associated with the rain god Tlaloc were found nearby. Archaeologist Iris del Rocio Hernandez Bautista says some Mesoamerican creation myths hold that the earth monster Cipactli floated on primeval waters and then split itself, thus creating the heavens and earth. She says the site at Nahualac could emulate that idea.Let's block ads! (Why?) ABC News: Technology
Astronomers observe one of the oldest galaxies in the universe

Astronomers observe one of the oldest galaxies in the universe

Science
Nov. 6 (UPI) -- Astronomers have observed the second most distant dust-filled, star-forming galaxy in the cosmos. The galaxy was spotted using the Large Millimeter Telescope, the most powerful telescope of its kind.The LMT is positioned at the top of Sierra Negra, the fifth tallest peak in Mexico, and jointly operated by the University of Massachusetts, Amherst and Mexico's National Institute of Astrophysics, Optics and Electronics.The newly imaged galaxy was likely one of the earliest star-forming galaxies in the universe."The Big Bang happened 13.7 billion years ago, and now we are seeing this galaxy from 12.8 billion years ago, so it was forming within the first billion years after the Big Bang," Amherst astrophysicist Min Yun said in a news release. "Seeing an object within the first b...