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News
A New Catalog of Close to 3,000 Supernova Challenges Theories on Dark Energy
4+ hour, 5+ min ago (88+ words) The most comprehensive catalogue of exploding white dwarf stars ever assembled has revealed new clues about dark energy, the mysterious force driving the universe’s accelerating expansion....
A Breakthrough Listen survey was thought to have covered about 288,000 stars catalogued by Gaia. But a new simulation of the Milky Way estimates that more than 6.18 million stars actually fell within its radio-telescope beams—millions of potential worlds too faint or distant for Gaia to catalogue reliably, yet still within range if they were transmitting strongly enough.
11+ hour, 29+ min ago (1228+ words) A Besançon Galaxy Model reanalysis expands Breakthrough Listen's stellar bycatch to 6,182,364 simulated objects, while strong transmitter limits remain conditional on distance, power and duty cycle....
Is This the First Exomoon
2+ day, 12+ hour ago (1676+ words) For decades, astronomers have been looking for moons beyond our Solar System. Several exomoon candidates have been proposed, but none has become an unambiguous, confirmed example. In a recent SETI Live conversation, host Dr. Franck Marchis spoke with Universidad Diego…...
Dense Galaxies Are Carving Out A Bubble in the Early Universe
1+ day, 7+ hour ago (185+ words) Light could only travel freely in the Universe after cosmic reionization. Before that, neutral hydrogen stopped photons from travelling. The JWST has found evidence of an overdensity of galaxies carving out a bubble of reionization. Is this how it all…...
‘Odd couple’ black holes can find each other in space
2+ day, 2+ hour ago (477+ words) When two black holes find each other in the vastness of space, they can form a binary odd couple—and it’s more common than researchers expected. Scientists think most black holes are born when a star dies and its core…...
Frozen object beyond Jupiter is transforming into a comet
1+ day, 13+ hour ago (1029+ words) A frozen object beyond Jupiter is venting carbon dioxide gas into space, revealing what can drive activity so far from the sun. A centaur, one of the icy bodies that orbit beyond Jupiter, has started venting gas into space, even…...
Scientists say the universe could tear itself apart. Here's how
2+ day, 11+ hour ago (445+ words) When we think about how everything would come to an end, we often imagine that the universe would slowly fade into dark nothingness over time. But there’s a theory, famously known as the Big Rip, that says it could end…...
Hubble and Webb Teamed Up on Distant Solar System Bodies and Found Fewer Tiny Ones Than Some Models Predicted
2+ day, 12+ hour ago (840+ words) NASA announced the joint Hubble and Webb results on September 8, alongside two complementary papers published that day in The Astronomical Journal. NASA says it is the first time the two telescopes have been used jointly to study Trans-Neptunian Objects, and…...
NASA’s Roman Space Telescope Prepares To Reveal Distant Worlds With Direct Exoplanet Imaging
2+ day, 13+ hour ago (836+ words) This article is based on reporting from Space.com about NASA’s Roman Space Telescope, its advanced coronagraph technology and its role in future exoplanet direct imaging research. The challenge is enormous because stars are millions or even billions of times…...