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“#Return of the extremely elongated cloud on Mars” Credit: ESA/GCP/UPV/EHU Bilbao A mysteriously long, thin cloud has again appeared over the 20-km-high Arsia Mons volcano on Mars. A recurrent feature, the cloud is made up of water ice, but despite appearances it is not a plume linked to volcanic activity. Instead, the curious stream forms…
“#Astronomers pinpoint the best place on Earth for a telescope: High on a frigid Antarctic plateau” The highest ice dome on the Antarctic Plateau could offer the clearest view on Earth of the stars at night, according to new research by an international team from China, Australia and the University of British Columbia. Credit: Zhaohui…
“#Discovered: Remnant of ancient globular cluster that’s ‘the last of its kind’” An artist’s representation of the Phoenix Stellar Stream. Originally a ball of stars, known as a globular cluster, Phoenix has been stretched into a stream of stars by the gravitational pull of the Milky Way. In a few billion years, Phoenix will be…
“#Researchers discover triple-layered leading-edge of solar coronal mass ejections” Credit: CC0 Public Domain In a study published in The Astrophysical Journal, Dr. MEI Zhixing in Yunnan Observatories of the Chinese Academy of Sciences and his colleagues reported a Magnetohydrodynamical (MHD) numerical study on the coronal mass ejection (CME). They presented a high-resolution 3-D resistive MHD…
“#Extended X-ray emission detected from the radio galaxy 4C 63.20” Credit: CC0 Public Domain Using NASA’s Chandra X-ray Observatory, an international team of astronomers has conducted deep imaging observations of a high-redshift radio galaxy known as 4C 63.20. The observational campaign has revealed an extended X-ray emission from this source. The finding is reported in…
“#Studying radioactive aluminum in stellar systems unlocks formation secrets” This artist’s concept available from NASA illustrates a stellar system that is a much younger version of our own. Dusty disks, like the one shown here circling the star, are thought to be the breeding grounds of planets, including rocky ones like Earth. Credit: NASA/JPL-Caltech An international…
“#Dead star emits never-before seen mix of radiation” This artist’s impression provides a schematic of how the imager on-board ESA’s Integral satellite (IBIS) can reconstruct images of powerful events like gamma-ray bursts (GRB) using the radiation that passes through the side of Integral’s imaging telescope. IBIS uses two detector layers, one on top of the…
“#A growing stellar system directly fed by the mother cloud” At a distance of just about 1000 light-years, the young star forming systems in the Perseus molecular cloud can be observed in detail with high-resolution telescopes. The system studied in this work, called Per-emb-2 (IRAS 03292 3039), is located in the box marked in the…
“#New approach refines the Hubble’s constant and age of universe” Credit: CC0 Public Domain Using known distances of 50 galaxies from Earth to refine calculations in Hubble’s constant, a research team led by a University of Oregon astronomer estimates the age of the universe at 12.6 billion years. Approaches to date the Big Bang, which…
“#Two new high-redshift red quasars discovered” HSC images of the red quasar HSC J120505.09−000027.9. Credit: Kato et al., 2020. Using the Subaru Telescope, astronomers have identified two new dust-reddened (red) quasars at high redshifts. The finding, detailed in a paper published July 16 on the arXiv pre-print server, could improve the understanding of these rare…