The massive Smith Cloud falling toward our galaxy’s disk is likely from our galaxy, not a visitor.
Ripples found in the Milky Way’s disk reveal our galaxy survived an ancient hit-and-run. Now, astronomers might have caught the culprit.
A new technique lets astronomers measure nearly invisible clouds of hydrogen gas from across the universe.
Astronomers have caught a giant elliptical galaxy “shimmering” as its stars pulsate.
The Fermi Gamma-ray Space Telescope has discovered that almost all of the highest energy photons in the Large Magellanic Cloud come from two pulsars.
Hubble observations confirm that much of the light that broke up the early universe’s hydrogen came from the smallest galaxies.
Some of the universe’s most luminous galaxies are also the most mysterious. New simulations shed light on how these galaxies formed.
Astronomers have discovered that one galaxy of a nearby double-galaxy system has a giant, star-studded ring.
As the IAU General Assembly in Hawaii'i draws to a close, the results were still coming in: a new bevy of dwarf galaxies discovered around the Milky Way, the celebration of the first Dark-Sky Sanctuary, and a new directly imaged exoplanet to boot.
Recent headlines proclaim that the universe is dying, but we’ve actually known that for decades. Here’s what’s really interesting about recent research on the nearby universe.
Astronomers have found that a massive filament of gas in the early universe actually seems to be a humongous, galaxy-forming disk.
On Earth, wind can transform entire landscapes - turns out the same is true in space. Galaxy NGC 4921 faces an intracluster wind that's eroding its star-forming terrain.
Astronomers have come upon the tantalizing signal from some of the universe’s first stars.
Combining a novel technique and a world-class telescope, astronomers have measured the mass of the supermassive black hole at the center of barred spiral NGC 1097.
New ALMA observations reveal low levels of dust in nine early galaxies, suggesting astronomers should revise some of their calculations.
Following on a surprising find reported last year, astronomers have now discovered almost 1,000 dark matter-rich galaxies in the Coma Cluster.
Researchers confirm that three solitary stars have gone supernovae in intergalactic space.
Researchers using NASA’s Wide-Field Infrared Survey Explorer (WISE) have discovered the most luminous galaxy to date.
Observations of white dwarfs in a densely populated globular cluster confirm astronomers’ expectations that stars will migrate to a cluster’s outskirts after losing weight.
Astronomers have detected a massive yet elusive nimbus of hot gas surrounding Andromeda Galaxy.
Astronomers have discovered 195 compact elliptical galaxies, upping the known number of these weird galaxies sixfold.
A galaxy-size blob of gas discovered eight years ago by a Dutch schoolteacher has galvanized the study of the spectral remains of once-bright quasars.
Astronomers have found massive galaxies 3 billion years after the Big Bang that are dying from the inside out.
A rare type of gravitational lens offers astronomers a close look at a young, dusty galaxy manufacturing hundreds of stars a year.
Astronomers have found a set of new dwarf galaxy candidates near the Milky Way Galaxy, a discovery crucial to understanding dark matter.