A renegade star exploding in a distant galaxy has forced astronomers to set aside decades of research and focus on a new breed of supernovae that can utterly annihilate its parent star — leaving no remnant behind. The signature event, something astronomers had never witnessed before, may represent the way in which the most supermassive ...
If you put a Moon rock alongside one from Earth, they usually don’t have a lot in common. So when Curtin University planetary scientist Professor Alexander Nemchin looked closely at a Moon rock in his laboratory, he realized something wasn’t right. The Moon rock’s composition was similar to granite, which is extremely rare on the ...
A group of astronomers, including Penn State scientists, has announced the likely discovery of a highly obscured black hole existing only 850 million years after the Big Bang, using NASA’s Chandra X-ray Observatory. This is the first evidence of a cloaked black hole at such an early time. Black holes produce quasars Supermassive black holes ...
A team from University College Dublin has unearthed almost 40 previously unknown monuments close to Newgrange, including a “spectacular” monument that aligns with the winter solstice sunrise. The findings likely range from the Neolithic period (4000 B.C.), through the Bronze Age (2500 B.C.), and the early Middle Ages. The monument aligned with the winter solstice ...
How do galaxies such as our Milky Way come into existence? How do they grow and change over time? The science behind galaxy evolution has remained a puzzle for decades. Still, a University of Arizona-led team of scientists is one step closer to finding answers thanks to supercomputer simulations. Observing real galaxies in space can ...
When small, dense stars called white dwarfs explode, they produce bright, short-lived flares called Type Ia supernovae. These supernovae are informative cosmological markers for astronomers — for example, they were used to prove that the universe is accelerating in its expansion. White dwarfs are not all the same, ranging from half of the mass of ...
Astronomers are planning to hunt for cores of exoplanets around white dwarf stars by “tuning in” to the radio waves that they emit. In new research led by the University of Warwick, scientists have determined the best candidate white dwarfs to start their search, based on their likelihood of hosting surviving planetary cores and the ...
Charcoal produced by wildfires could trap carbon for hundreds of years and help mitigate climate change, according to new research just published. The extensive and unprecedented outbreak of wildfires in the arctic and the vast amounts of CO2 they are emitting have been hitting the headlines across the world. But a new Nature Geoscience study ...
Astronomers have found the ghostly remains of one of the Universe’s first stars inside a rare, ancient star far, far away on the other side of our galaxy. ANU astronomer Dr. Thomas Nordlander said the parent of the star they discovered 35,000 light-years away in the Milky Way was about 10 times the mass of ...
Victor Camp has spent a lifetime studying volcanic eruptions all over the world, starting in Saudi Arabia, then Iran, and eventually the Pacific Northwest. The geology lecturer finds mantle plumes that feed the largest of these eruptions fascinating because of their massive size and the impact they can have on our environment. Yellowstone’s supervolcano is ...
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