All amateur Michael Sidonio wanted was a pretty astro-image of NGC 253. What he got instead was credit for discovering a rare dwarf galaxy.
Hubble observations confirm that much of the light that broke up the early universe’s hydrogen came from the smallest galaxies.
A lab experiment has all but nixed one of the theories of dark energy, a mysterious force pushing the universe apart.
Astronomers have found that a massive filament of gas in the early universe actually seems to be a humongous, galaxy-forming disk.
New ALMA observations reveal low levels of dust in nine early galaxies, suggesting astronomers should revise some of their calculations.
Researchers confirm that three solitary stars have gone supernovae in intergalactic space.
Starry cannibalism of Wolf-Rayet Star Nasty 1 may offer clues as to how massive, pre-supernova stars evolve.
Two projects are mapping the distribution of dark matter in the universe, probing scales both large and small.
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.
Dozens of galaxy clusters confirm that dark matter particles slip right past each other within messy cluster mergers.
Astronomers have found a set of new dwarf galaxy candidates near the Milky Way Galaxy, a discovery crucial to understanding dark matter.
For the first time, astronomers are watching as a supernova’s light bends around a massive galaxy on its way to Earth.
A small galaxy 700 million years after the universe’s birth has a dust reservoir that makes it look like a much older galaxy.
Astronomers have discovered one of the brightest quasars in the early universe. The source, SDSS J010013.02+280225.8 (hereafter J0100+2802), is powered by a supermassive black hole at a redshift of 6.3, meaning that its light left it 12.8 billion years ago.
The Planck team has finally released its full-mission data, revealing a remarkably detailed view of our universe and our galaxy.
The long-awaited analysis of spiraling polarization patterns called B-modes affirms that these signals, purportedly from the universe’s post-birth inflation, are probably from dust in our galaxy instead.
Yes, it was too good to be true. The cosmic "discovery of the century" last March has officially blown up. Or will blow up next week when a new analysis of polarization in the cosmic microwave background is officially released. The excitement burst onto the world 10 months ago when the BICEP microwave background team,…
Amidst the release of a treasure trove of astronomical data, scientists announce the most precise “standard ruler” yet for cosmological distances.
A bizarre set of galaxies in the Coma Cluster have lost most of their stars (or star-making material), making them especially rich in dark matter.
A new analysis of Planck data bolsters the claim that the polarization signal heralded as evidence for cosmic inflation is from dust instead.
Astronomers have mapped the cosmic watershed and discovered a massive supercluster that extends more than 500 million light-years and contains 100,000 large galaxies. The Milky Way sits on the edge of this humongous structure.
Astronomers might be on the brink of developing a new rung on the cosmic distance ladder.
Light from the puniest galaxies played a bigger role in shaping the early universe than previously thought.
A newly discovered radio burst places these ultrafast, ultrabright pulses on the cosmic map of unknown phenomena.