New Scientist 4 Nov 2019, 16:00 UTC Travel far enough in the universe and you could end up back where you began. Measurements from the Planck space observatory have shown that the universe might be shaped like a sphere rather than a flat sheet, which would change nearly everything we think we know about the cosmos.
SciTech Daily 4 Nov 2019, 04:39 UTC NASA’s Chandra X-ray Observatory has captured many spectacular images of cosmic phenomena over its two decades of operations, but perhaps its most iconic is the supernova remnant Cassiopeia A.
Astro Watch 3 Nov 2019, 08:48 UTC Exploring the influence of galactic winds from a distant galaxy called Makani, UC San Diego's Alison Coil, Rhodes College's David Rupke and a group of collaborators from around the world made a novel discovery. Published in Nature, their study's findings provide direct evidence for the first time of the role of galactic winds--ejections of gas from galaxies--in creating the circumgalactic medium (CGM). It exists in the regions around galaxies, and it plays an active role in their cosmic evolution. The unique composition of Makani--meaning wind in Hawaiian--uniquely lent itself to the breakthrough findings.
Astroengine 2 Nov 2019, 02:11 UTC While we have a pretty good idea about how stars like our Sun work, observing all the details that unfold over millions to billions of years of stellar evolution can be difficult, especially if the phenomena occur over short timescales. Take, for example, a particularly explosive and relatively short-lived period our Sun is expected to experience in roughly five billion years.
Asteroid Hygiea is Round Enough That it Could Qualify as a Dwarf Planet, the Smallest in the Solar System2 Nov 2019, 02:07 UTC Within the Main Asteroid Belt, there are a number of larger bodies that have defied traditional classification. The largest among them is Ceres, which is followed by Vesta, Pallas, and Hygeia. Until recently, Ceres was thought to be the only object in the Main Belt large enough to undergo hydrostatic equilibrium – where an object is sufficiently massive that its gravity causes it to collapse into a roughly spherical shape.
SciTech Daily 2 Nov 2019, 01:41 UTC Galaxies may seem lonely, floating alone in the vast, inky blackness of the sparsely populated cosmos — but looks can be deceiving. This image of NGC 1706, taken by the NASA/ESA Hubble Space Telescope, is a good example of this. NGC 1706 is a spiral galaxy, about 230 million light-years away, in the constellation of Dorado (the Swordfish).
EarthSky Blog 1 Nov 2019, 15:35 UTC Earth’s gravity bent the trajectory of asteroid C0PPEV1 so much yesterday – as this asteroid swept only 3,852 miles (6,200 km) above Africa – that its farthest point from the sun has now shifted out to the asteroid belt between Jupiter and Mars.
Bad Astronomy 1 Nov 2019, 13:00 UTC We know that all big galaxies have supermassive black holes (SMBHs to those in the know) in their centers, and that these SMBHs grew to their enormous sizes early on. These black holes affect the way the galaxy grows, which in turn also affects how the SMBH grows, too.