Astronomy news from Cosmic Herald — telescopes, exoplanets, black holes, and the discoveries reshaping our picture of the universe.
Pooling data from professional observatories and citizen-run eVscopes worldwide, a new study finds interstellar comet 3I/ATLAS wore a stubbornly red dust coma through its entire solar system passage, regardless of how bright it got.
Read the story →A guest opinion: with only a handful of nearby Sun-like stars and vanishingly small odds that two civilizations' communication windows would ever overlap, real two-way contact with alien intelligence may be far less likely than we hope.
XRISM's Resolve instrument watched iron lines flip from absorption to emission during a flare from GX 301-2, giving the first direct spectroscopic evidence of stellar-wind plasma falling onto a neutron star.
NASA's Lunar Reconnaissance Orbiter caught a freshly formed lunar crater the size of the Colosseum, blasted open in 2024 by a building-sized impactor and only noticed in October 2025.
Caltech researchers used dispersion measures from 130 localized fast radio bursts to detect galactic feedback reshaping the cosmic web at 6.5-sigma, a technique poised to scale into the tens of thousands of bursts DSA-110's successor is expected to find after 2029.
A JWST survey has turned up an object from the universe's first few hundred million years that looks like a solar-system-sized star but is powered by a black hole 100,000 times the Sun's mass — a possible answer to the mystery of the 'little red dots.'
A 3D simulation study finds that the "bright spots" long assumed to dot every star's surface actually turn dark on M dwarfs, a wavelength-dependent quirk that could be quietly skewing exoplanet radius and atmosphere measurements from JWST.
Eight years of ALMA, VLA, JWST and VLT data show a massive protobinary 5,300 light-years away didn't form from one collapsing disk — it assembled 60 years ago when two separately-born stars gravitationally captured each other.
Using 96 hours of MeerKAT radio data, astronomers directly detected the faint 21-cm hydrogen signal from galaxies billions of light-years away, validating a technique that could remap the universe's structure without resolving a single galaxy.
Native Hawaiian high school interns named a Gemini North image of two merging spiral galaxies 200+ million light-years away "The Twin Spirits Pulling Together Creating Life."
FAST stacked 21-cm signals from 2.5 million DESI galaxies and found the universe's atomic hydrogen barely budged while star formation fell by more than half. The fuel is there; galaxies just stopped burning it.
Hubble archival data reveal a strengthening 10-sided vortex ringing Saturn's south pole — a feature Cassini never saw in 13 years at the planet, and a strange new sibling to its famous northern hexagon.
Free daily briefing — missions, discoveries, and what's overhead tonight.
You're in. ✓
Check your inbox to confirm your subscription.No spam. Unsubscribe any time. Read our privacy policy.
