A new method of measuring star formation in the earliest galaxies finds that they’re producing more massive stars than expected — a result that could affect our understanding of how galaxies grow their stars.
This week: Stars in the Milky Way's outskirts give clues to our galaxy's history, ancient stellar cities might not be as old as they appear, and the International Dark-sky Association awards its 100th Dark Sky Place.
Two new studies — one by a group of high school students — are investigating the strange environment around Tabby's Star.
Astronomers have discovered a pulsar that comes with its own magnifying glass — courtesy of its brown dwarf companion that’s being torn to shreds.
A new analysis of decades-old data from NASA’s Galileo spacecraft, which reached the Jupiter system in 1995, shows the best evidence yet for plumes from the icy moon Europa.
This week in astronomy news: Researchers discover the first completely cloud-free exoplanet and a star-forming cloud reveals its structure through vibrations.
Stephen Hawking’s last paper on cosmology, published posthumously, might solve the problem of eternal inflation, a theory that suggests our cosmos is but one in a sea of infinite universes.
At least 14 galaxies are swarming in the early universe, forming a protocluster with the mass of 10 trillion Suns. It might become one of the most massive structures in the universe.
To celebrate Hubble's 28th birthday NASA is releasing a brand-new image of the Lagoon Nebula, a vast stellar nursery.
A mini-satellite demonstrates exoplanet-hunting technology, a superconducting camera tests its abilities to image exoplanets, and bad news for life on Proxima Centauri b.
Astronomy news this week: Hubble images the most distant star, radio telescopes combine forces to probe black hole jet, and neutron star hotspots explained.
A new study has uncovered a dozen stellar-mass black holes within 3 light-years of the supermassive black hole at our galaxy’s core — and these might be just the tip of the iceberg.
NASA officials announced Wednesday that the James Webb Space Telescope launch would be delayed until approximately May 2020. But before the mission can launch, its managers may have to face Congress.
Trappist-1's water-rich planets, a new measure of the solar system's planet-forming history, and an explanation for luminous, short-lived exploding stars.
New ALMA observations reveal a fiber-like structures within a longer, well-studied filament. These fibers contain the seeds of future stars.
Stephen Hawking, renowned physicist, famed science communicator, and all-around inspiration, has passed away at the age of 76.
A long-ago encounter between our galaxy and an orbiting dwarf might have ejected some of the Milky Way’s stars.
A non-partisan government office has issued a report warning of additional delays for the James Webb Space Telescope, which could pit the mission against its funding cap.
It turns out that neutron stars — not black holes — power at least some ultraluminous X-ray sources.
Astronomers have detected a torus rotating around the supermassive black hole at the center of spiral galaxy Messier 77, collecting observations that may shed light on why these weird structures exist.
Scientists have finally confirmed a decades-old theory on what causes the faint flickering seen in the Northern Lights toward dawn.
Two new studies of the seven planets orbiting TRAPPIST-1 shed light on how these worlds formed and what they look like now.
Dark matter particles may travel more slowly than we thought, hindering their detection. Dust storms may aid atmospheric loss on Mars. And a new mission is investigating magnetic fields at an unprecedented scale.
If you're not in the right place in the right time, you can still view Wednesday morning's total lunar eclipse online via several live streams. We list several options here.
Amateur astronomer Donald Bruns has received the Chambliss Amateur Achievement Award from the American Astronomical Society for his work in repeating and improving upon an iconic experiment during the August 2017 total solar eclipse.