Category: Astronomy
Astronomers caught a white dwarf star exploding before its supernova reaches peak brightness
JWST captures a giant exoplanet at a wavelength where it had remained invisible
Could the universe be 26.7 billion years old? An alternative theory gives early galaxies billions more years to grow
A 1,000-solar-mass black hole may have grown into a giant without building a galaxy around it
Seven massive star clusters hold at least 80% of a galaxy from the universe’s first 400 million years
A gamma-ray burst faded, then its X-ray afterglow suddenly brightened weeks later
Hidden behind Galactic dust, Garro 04 emerges as a 10,000-light-year-distant cluster with shared motion, chemistry and a disk-like orbit
Earth may have kept its oceans and mild climate for billions of years without life
The stars’ 20-day rotation masquerades as planet-like signals in a nearby binary system
Hidden Milky Way star cluster may be 13.4 billion years old, nearly as old as the universe
Betelgeuse grows more oval as its companion star moves through its atmosphere
Black holes keep pace with their galaxies even when the galaxies have no bulge
Earth appears to have grown mostly from pebble-built bodies, while Mars got most of its mass from planetesimals
Fornax-7 contains only about 170 Suns’ worth of stars, yet its distance leaves its true identity uncertain
Enceladus’ strange salt-rich ice grains may be fragments of larger frozen droplets
Four generations of radio jets stretch nearly 1.2 million light-years from a galaxy’s core, preserving a record of repeated outbursts
Hα emission from cool halo gas is nearly 100 times brighter along radio-jet directions
HATS-6 b is nearly 200 kelvins colder than its orbit suggests it should be
Venus may have lost a moon when its expanding synchronous orbit caught up with it
Metal-bearing gas was already moving at up to 250 kilometers per second around galaxies less than a billion years after the Big Bang
Astronomers spot what may be the first stellar stream from a globular cluster torn apart outside the Milky Way
TRAPPIST-1e is older than Earth, but its hypothetical biosphere may be billions of years behind
β Pictoris b is blasting out auroral radio bursts from a magnetic field at least 1.25 kilogauss strong
One jet from a hidden binary may be hitting a molecular cloud deep in the Milky Way
The Moon’s newest crater disturbed the surface more than 120 kilometers away
A giant planet’s transits are shifting toward the edge of its star and may vanish by 2033
Huge impacts may shatter icy moons, but their underground oceans can survive for billions of years
A giant planet is growing inside a narrow gap around a star less than 1 million years old
This spiral galaxy’s center rotates at a right angle to its outer disk
The solar system’s first planetesimals were mostly built from heat-forged rock droplets
