2020-09-27@19:30:50 GMT
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white dwarfs:

    exoplanet giant that was able to survive the death of its sun and continue to orbit around the white dwarf that became its parent star. “data-reactid =” 12 “> A consortium of astronomers discovered the first giant exoplanet that was capable of of surviving the death of its sun and continuing to orbit the white dwarf that became its parent star. The finding from the Association of Research Universities in Astronomy (Aura) shows that it is possible for planets the size of Jupiter to survive the disappearance of their star and settle into close orbits around the remaining stele, close to the habitable zone. Solar system, when the Sun ages and becomes a white dwarf. “data-reactid...
    A group of citizen scientists has discovered 95 "cool worlds" near the sun, celestial objects much larger than planets but lighter than stars, known as brown dwarfs, according to a new study. The research, slated to be published in the Astrophysical Journal and available to read on the arXiv.org preprint server, notes these "previously unrecognized substellar neighbors to the sun" were found by a citizen scientist project known as Backyard Worlds: Planet 9. “These cool worlds offer the opportunity for new insights into the formation and atmospheres of planets beyond the Solar System,” said the study's lead author, Aaron Meisner from the National Science Foundation’s NOIRLab, in a statement. “This collection of cool brown dwarfs also allows us to accurately...
    So, based on this scenario, Caplan has theorized that as the universe continues to expand, at some point, it will run out of power. The gas in the universe, which is one of the main factors in the formation of new stars, will also be depleted. During this period (called the Great Frost or heat death), the remaining stars will begin to die out and only the remnants of dead stars like black holes, neutron stars, and white dwarfs will remain in the universe. Since white dwarfs are not massive or dense enough to trigger supernova events like other stars, as we have seen, they will suffer a completely different reaction. According to Caplan, as white dwarfs become dimmer and...
    The universe will gradually become a dark and quiet place as stars slowly fizzle out, but in trillions of years a few will let off one last spark of energy, a new study found. Physicist Matt Caplan from Illinois State University calculated that the last 'white dwarf' stars will become black dwarfs and will explode in a supernova. This won't happen for an incredibly long time, according to Caplan, who said the first one won't explode for 10 to the 1100th years - that is trillion one hundred times.  This last bursts of energy as the stars die will be in isolation, as by that point all galaxies in the universe will have dispersed and black holes will have evaporated. ...
    (CNN)Astronomers witnessed a flash of ultraviolet light after a white dwarf star exploded in a supernova, according to a new study. This is only the second time such an event has ever been observed.A white dwarf is the dense remnant of red giant stars once they explode. But white dwarfs can explode, too. Scientists are still trying to figure out why, and this detection may help them find that answer. Unusual supernova sent this star speeding across our galaxyThe unusual supernova was first spotted by astronomers who were using the Zwicky Transient Facility in California in December 2019. Using the extremely wide field camera, they were able to observe the supernova, and the ultraviolet flash that followed, just one...
    White Dwarfs, the dead remnants of a Sun-like star, are responsible for most of the carbon in the Milky Way - the element essential for life as we know it, a study found.  Astronomers from the US and UK including the University of Warwick, studied star clusters throughout the Milky Way to track down the main sources of carbon.   A White Dwarf star is the dense stellar remnant of a Sun-like star - it is the cool dim phase after it runs out of fuel and expels its matter including carbon atoms. Every carbon atom in the universe was created in a star - some from energetic supernovae explosions and some from White Dwarfs before they begin cooling.  Researchers discovered...