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“#Carbon-rich exoplanets may be made of diamonds” Illustration of a carbon-rich planet with diamond and silica as main minerals. Water can convert a carbide planet into a diamond-rich planet. In the interior, the main minerals would be diamond and silica (a layer with crystals in the illustration). The core (dark blue) might be iron-carbon alloy….
“#The presence of resonating cavities above sunspots has been confirmed” Artist’s conception of waves trapped between the surface of a sunspot (lower image, taken with the GREGOR Fabry-Perot Interferometer) and the transition region (upper image, by courtesy of NASA/SDO and the scientific team of AIA). Credit: Gabriel Pérez Díaz, SMM (IAC). Sunspots are darker regions…
“#Data from Yutu-2 suggests top layer of lunar regolith is material thrown from nearby crater” Credit: CC0 Public Domain A team of researchers has found evidence suggesting that the regolith material on which the Chinese rover Yutu-2 is situated consists mainly of material that was thrown there when an asteroid struck the moon nearby. In…
“#Okay, new idea: ‘Oumuamua is an interstellar ‘dust bunny’” Artist’s conception of Oumuamua, emphasizing its cigar shape. The object could also have been shaped like a disk, with an elongated dimension that we couldn’t see from Earth. Credit: ESO/M. Kornmesser Explaining the concept of a dust bunny to small children can be quite amusing. No,…
“#Finding magnetic eruptions in space with an AI assistant” MMS look for explosive reconnection events as it flies through the magnetopause — the boundary region where Earth’s magnetic butts up against the solar wind that flows throughout the solar system. Credit: NASA Goddard/Mary Pat Hrybyk-Keith; NASA Goddard’s Conceptual Image Lab/Josh Masters/Joy Ng An alert pops…
“#Solar telescope GREGOR unveils magnetic details of the sun” Left: The GREGOR telescope on Tenerife, Spain. Right: The newly redesigned optical laboratory of GREGOR. Credit: L. Kleint, KIS. The Sun is our star and has a profound influence on our planet, life, and civilization. By studying the magnetism on the Sun, we can understand its…
“#Space debris observed for the first time during the day” The Zimmerwald Laser and Astrometry Telescope ZIMLAT in Zimmerwald, which is used for distance measurement to space debris objects. Credit: University of Bern, AIUB On the afternoon of February 10, 2009, the operational communications satellite Iridium 33 collided with the obsolete Cosmos 2251 communications satellite…
“#Hubble maps giant halo around Andromeda Galaxy” This illustration shows the location of the 43 quasars scientists used to probe Andromeda’s gaseous halo. These quasars–the very distant, brilliant cores of active galaxies powered by black holes–are scattered far behind the halo, allowing scientists to probe multiple regions. Looking through the immense halo at the quasars’…
“#Study rules out dark matter destruction as origin of extra radiation in galaxy center” An artist’s interpretation of the Milky Way shows the “boxy” distribution of stars in the Galactic Center. A UCI-led team of physicists said in a newly published study that this shape leaves very little room for excess radiation from the destruction…
“#Scientists determine ‘Oumuamua isn’t made from molecular hydrogen ice after all” Credit: Harvard-Smithsonian Center for Astrophysics The debate over the origins and molecular structure of ‘Oumuamua continued today with an announcement in The Astrophysical Journal Letters that despite earlier promising claims, the interstellar object is not made of molecular hydrogen ice after all. The earlier…