NASA’s $1.2 billion PRIMA will explore how galaxies evolve and how planets emerge from disks of gas and dust

U.S.-led Thirty Meter Telescope declines €1 billion Spanish offer to build the observatory on the Canary Islands

Puzzling event could be an artifact of gravitational lensing, a new model suggests

With a view 100 times larger than Hubble, the observatory will survey the cosmos for distant worlds and clues to dark energy

Novel rescue craft unable to connect with doomed Swift Observatory

Racing at 8% the speed of light, record-setting object orbits the Milky Way’s black hole every 8.7 years

With a lens array in Chile, astronomers capture clumps of gas from a dying star returning to the Galaxy

YouTube video by NASA Jet Propulsion Laboratory

New study spots “primordial spin” imprinted on galaxies by churning halos of dark matter

Jodrell Bank Observatory is one of several projects to lose funding following a review by the cash-strapped Science and Technology Facilities Council

Stripped-down behemoth promises new insights into how galaxies grow, astronomers say

Three approaches—including one that exploits Earth’s radiation belts—could help enforce ban on orbital nuclear weapons

Orbiting datacenters and sunlight reflectors would scupper astronomy by leaving streaks on telescope images and brightening skies, study finds

World’s biggest digital camera will repeatedly scan the sky, spotting cosmic explosions while building up a deep map of billions of galaxies

Vehicle will attempt a daring capture-and-boost mission to extend the life of the Swift observatory

New guidelines aim to help scientists verify, communicate, and manage evidence of extraterrestrial intelligence

Puzzling JWST observation could instead be one of the universe's first galaxies—or something more mundane

A revived technique could reveal planets near their stars and the inner workings of galaxies

Five-year quest to chart 47 million galaxies yields insights into mysterious “dark energy”

Unusual radio signals could be long-sought smoking gun of galactic mergers

Repeated supernovae flashes, warped by gravity, could resolve a cosmological dispute

$1 billion AXIS proposal fell victim to agency upheaval, principal investigator says

Peculiar bumps in light from supercharged supernovae point to a stellar remnant surrounded by a wobbling disk of matter

Search through space telescope’s archival images reveals unusually dim galaxy

New analysis sheds light on space junk’s small, growing effects on upper atmosphere

Failed supernova candidate points to a stealthy pathway of stellar collapse

Light pollution from green hydrogen plant would have threatened world’s largest telescopes

Europe’s Solar Orbiter is helping researchers understand what causes the Sun to blast out radiation and particles

Schmidt Sciences announces investments in orbiting observatory and three ground-based instruments

Bold concept calls for sending telescopes 10 times farther than Pluto

Benefactors agree to help support next-generation particle accelerator, but billions more are needed

Proposed “megaconstellations” would contaminate images from telescopes in low-Earth orbit, including Hubble

X-ray observatory and mission to Saturn’s moon Enceladus win as ESA’s science program sees growth

Spain’s €400 million offer could induce Thirty Meter Telescope to switch sites

Coronal mass ejections would make it hard for planets to keep an atmosphere and host life

Blue Skies Space will sell data from its tiny, low-cost UV telescope

Some theorists think unusual event could be a black hole devouring a star from within

Swiss cheese materials called metal-organic frameworks can separate and store gases

If confirmed, vast cloud could test predictions about the Milky Way’s hidden architecture

Country-size array of radio antennas could trace ultra–high-energy particles back to supernovae and black holes

Big brute 5 billion light-years from Earth is 36 billion times as massive as the Sun

Puzzling objects spotted by NASA’s JWST telescope may be entirely new class of celestial entity

Small star could crash into red supergiant in the next 10,000 years

Now-canceled CMB-S4 project would have searched the afterglow of the Big Bang for signs of cosmic exponential growth spurt

Phalanx of instruments scrutinize 3I/ATLAS for clues about planet formation elsewhere in the galaxy