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“#A disc of gas would explain mysterious light changes observed in Sagittarius constellation” Credit: Pixabay/CC0 Public Domain The enigmatic variations of light in a binary system, located in Sagittarius constellation, could be explained by the presence of a variable gas disc around a hot star that revolves around a cooler star. These are the conclusions…
“#Researchers predict location of novel candidate for mysterious dark energy” The universe is 7% of its current age at the bottom, 24% in the middle, and the universe today is displayed at the top. Credit: Volker Springel and the Max-Planck-Institute for Astrophysics Astronomers have known for two decades that the expansion of the universe is…
“#Astronomers identify 18 metal-poor stars in the Sagittarius dwarf galaxy” Color-magnitude diagram of the observed Sagittarius stars colored by their metallicities. Credit: Chiti et al., 2020. Massachusetts Institute of Technology (MIT) astronomers have detected 18 very metal-poor stars in the Sagittarius dwarf galaxy. They found that one of the stars from the sample has an…
“#Researchers design continuous-scanning sky brightness monitor in 2.5- to 5-μm band” Model of the optical component and overall mechanics. Credit: Chen Jinting et al A research group led by Prof. Wang Jian from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) proposed a continuous-scanning near-infrared sky brightness…
“#Does a black hole fire up cold heart of the Phoenix?” Artist’s illustration of the structures seen in the observations. Credit: NAOJ Radio astronomers have detected jets of hot gas blasted out by a black hole in the galaxy at the heart of the Phoenix Galaxy Cluster, located 5.9 billion light-years away in the constellation…
“#Microlensing measurement of a quasar’s accretion disk” The Hubble image of a single quasar, WFI2026-4536, gravitationally lensed and imaged into four subimages. Panel (a) shows the image, and panel (b) shows the image after the quasar components have been subtracted, revealing the faint foreground lensing galaxy (“G”). Astronomers have used light variations between the quasar’s…
“#Molecular outflow identified in the galaxy NGC 1482” ALMA CO (1–0) integrated intensity image of NGC 1482 with KS-band (2MASS) brightness contours in the central region. Credit: Salak et al., 2020. Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers from Japan have probed a nearby starburst galaxy known as NGC 1482. They detected a molecular…
“#Scientists reveal complete physical scenario of sympathetic eruption of two solar filaments” Fig. 1 Overview of the sympathetic eruptions of two filaments and subsequent flares and CMEs. Credit: HOU Yijun Solar filaments are large magnetic structures confining cool and dense plasma suspended in the hot and tenuous corona. The sun ubiquitously breeds sympathetic eruptions, which are defined…
“#Image: Hubble views edge of stellar blast” Credit: ESA/Hubble & NASA, W. Blair; acknowledgment: Leo Shatz While appearing as a delicate and light veil draped across the sky, this image from the NASA/ESA Hubble Space Telescope actually depicts a small section of the Cygnus supernova blast wave, located around 2,400 light-years away. The name of…
“#NASA’s Webb solar array reconnects to the telescope” Technologists holding the solar array of the James Webb Space Telescope after a test of the array earlier in 2020. The fifth panel of the solar array is folded behind the fourth in this image. Credit: NASA/Chris Gunn One kilowatt is about what it takes to heat up…