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“#New tool helps interpret future searches for life on exoplanets” Credit: CC0 Public Domain Is there life on a distant planet? One way astronomers are trying to find out is by analyzing the light that is scattered off a planet’s atmosphere. Some of that light, which originates from the stars it orbits, has interacted with…
“#Method proposed for more accurate determinations of neutron star radii” Credit: Kazan Federal University Neutron stars are the smallest and densest astrophysical objects with visible surfaces in the Universe. They form after gravitational collapses of the iron nuclei of massive (with masses about ten solar masses) stars at the end of their nuclear evolution. We…
“#Strange gamma-ray heartbeat puzzles scientists” The microquasar SS 433 (background) sways with a period of 162 days. The inconspicuous gas cloud Fermi J1913 0515 (foreground), about 100 light years away, pulsates with the same rhythm in gamma rays, suggesting a direct connection. But how exactly the microquasar drives this ‘heartbeat’ of the gas cloud is…
“#Image: Hubble captures eccentrically shaped NGC 1614 galaxy” Credit: ESA (European Space Agency) NGC 1614, captured here by the NASA/ESA Hubble Space Telescope, is an eccentrically shaped galaxy ablaze with activity. The galaxy resides about 200 million light-years from Earth and is nestled in the southern constellation of Eridanus (the River). NGC 1614 is the result of…
“#Planetary nebula Abell 30 has a binary central star, study suggests” The average K2 target pixel file of the central star of Abell 30 with the pixels included in the photometry aperture outlined in white. Credit: Jacoby et al., 2020. Using data from NASA’s Kepler spacecraft, astronomers have explored a planetary nebula (PN) known as…
“#Fastest star ever seen is moving at 8% the speed of light” The distance of SgrA* stars at closest approach. Credit: Florian Peißker, et al In the center of our galaxy, hundreds of stars closely orbit a supermassive black hole. Most of these stars have large enough orbits that their motion is described by Newtonian…
“#Hubble finds that Betelgeuse’s mysterious dimming is due to a traumatic outburst” This four-panel graphic illustrates how the southern region of the rapidly evolving, bright red supergiant star Betelgeuse may have suddenly become fainter for several months during late 2019 and early 2020. In the first two panels, as seen in ultraviolet light with the…
“#Physicists calculate when the last supernova ever will happen” An artist’s concept of a dark brown dwarf, which may resemble the black dwarfs predicted to form in the future. Credit: NASA / JPL-Caltech The end of the universe as we know it will not come with a bang. Most stars will slowly fizzle as their…
“#ALMA sees most distant Milky Way look-alike” Astronomers using ALMA, in which the ESO is a partner, have revealed an extremely distant galaxy that looks surprisingly like our Milky Way. The galaxy, SPT0418-47, is gravitationally lensed by a nearby galaxy, appearing in the sky as a near-perfect ring of light. Credit: ALMA (ESO/NAOJ/NRAO), Rizzo et…
“#Astronomers investigate an ultraluminous X-ray source in NGC 5055” The X-ray image in counts/pixel displays the field of view of Chandra ACIS-S. The green circle containing bright pixels shows NGC 5055 X-1, while the empty green circle represents the region from where the background was extracted. Credit: Mondal et al., 2020. Using the Chandra and…