First-ever detection of ‘heavy water’ in a planet-forming disk
This artist’s impression shows the evolution of heavy water molecules (H2O, HDO, and D2O) as they have been observed in...
Astro
A new attempt to explain the accelerated expansion of the universe
by Birgit Kinkeldey, Zentrum für angewandte Raumfahrttechnologie und Mikrogravitation (ZARM) Expansion of the universe. Credit: Christian Pfeifer (AI-assisted) Why is...
Are there living microbes on Mars? Check the ice, researchers say
NASA's Phoenix mission in 2008 was the first to excavate down and capture photos of ice, pictured here, in the...
Astronomers detect radio signals from a black hole tearing apart a star—outside a galactic center
Artist’s interpretation of two massive black holes (MBHs) within a galaxy. A tidal disruption event unfolds around the MBH that...
Gaia provides a deep look into the galactic open cluster NGC 2506
Proper motion density distribution of stars in the NGC 2506 field, based on Gaia DR3 data. Credit: arXiv (2025). DOI:...
Changing-look active galactic nucleus investigated by researchers
Temporal variation of X-ray (0.3–10 keV range), UV, and optical continuum flux of AGN NGC 3822 obtained from the Swift...
Record-breaking gamma ray burst seems to be caused by a black hole engulfed by a bloated star
The combined, background-subtracted gamma-ray lightcurve of GRB 250702B. Credit: arXiv (2025). DOI: 10.48550/arxiv.2509.22792 On July 2, 2025, NASA's Fermi Gamma-ray Burst...
Can we hear gravitational-wave ‘beats’ in the rhythm of pulsars?
Credit: CC0 Public Domain Pulsars suggest that ultra–low-frequency gravitational waves are rippling through the cosmos. The signal seen by international...
Arab scholars may have noted the supernovae of 1006 and 1181 AD
The Chandra X-Ray Observatory's view of planetary nebula Pa 30, one of the prime suspects for SN 1181. Credit: NASA/Chandra....
Mysterious gullies on Mars appear to have been carved by burrowing CO₂ ice blocks
Mars dune with gullies in the Matara crater. The erratic course is probably due to disturbances such as wind ridges...
