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“#Elements of surprise: Neutron stars contribute little, but something’s making gold, research finds” The Periodic Table, showing naturally occurring elements up to uranium. Shading indicates stellar origin. Credit: Content: Chiaki Kobayashi et al Artwork: Sahm Keily Neutron star collisions do not create the quantity of chemical elements previously assumed, a new analysis of galaxy evolution…
“#Radio relic discovered in a nearby galaxy cluster” September 15, 2020 report MeerKAT radio contours (magenta) on A2384 XMM-Newton image. Credit: Parekh et al., 2020. Using the MeerKAT radio telescope in South Africa, an international team of astronomers has detected a radio relic in a nearby, low-mass, merging galaxy cluster designated A2384. The finding is…
“#Proposal for observatory to detect gravitational waves” A visualization of a supercomputer simulation of merging black holes sending out gravitational waves. Credit: NASA/C. Henze Researchers could detect more mergers of black holes and neutron stars with plans for a new flagship gravitational wave observatory in Europe moving a step closer. A proposal has been submitted…
“#Scientists propose possible mechanisms to explain coronal mini-jets in activated tornado-like prominence” Small-scale UV jets in an activated tornado-like prominence observed by spacecraft IRIS and SDO. Credit: CHEN Huadong Solar jets are a common phenomenon in the solar atmosphere. They mainly appear as transient collimated plasma ejections. Some studies have shown that jets may play an…
“#A warm Jupiter orbiting a cool star” A panorama of NASA’s TESS observations of the northern ecliptic hemisphere, showing that the star TOI-1899, indicated by a star symbol, lies just outside of the original field for NASA’s Kepler space mission (squares on the panorama) and is close to the plane of the Milky Way. A…
“#Scientists confounded by new findings on universe’s mysterious dark matter” WASHINGTON – Dark matter, mysterious invisible stuff that makes up most of the mass of galaxies including our own Milky Way, is confounding scientists again, with new observations of distant galaxies conflicting with the current understanding of its nature. Research published this week revealed an…
“#Uranian moons in new light” The images show the position of the five largest Uranian moons and their orbits around Uranus on 12 July 2011 as seen by Herschel. Left: Calculated positions and orbits of the moons. The left side of the orbital plane is pointing towards us. The size of the objects is not…
“#Millihertz quasi-periodic oscillations detected in an X-ray binary” September 14, 2020 report The 0.7–10 keV, 1 s bin size light curves of 1RXS J180408.9−342058 from the two XMM-Newton observations on March 6, 2015 and April 1, 2015, respectively. The thermonuclear bursts are evident as the brief increases of the count rate above the persistent level….
“#The evolving chemistry of protoplanetary disks” An artist’s conception of a planet-forming, circumstellar disk around a young star. Astronomers used the ALMA facility to study how the chemistry of volatile molecules – including water and carbon monoxide – evolves as young disks similar to this one develop planets, and the effects of these changes on…
“#Galactic census reveals origin of most ‘extreme’ galaxies” A wide field view of the central region of the Virgo Cluster, measuring 4.4 million light years on each side, from the Sloan Digital Sky Survey. Some of Virgo’s brightest member galaxies are labeled, including Messier 87, or M87, which is located close to the cluster center….