A study of ancient meteorites has refined the date for the dissolution of the solar nebula, the cloud that shrouded our Sun in its earliest days.
Green-glowing 45P/Honda-Mrkos-Pajdusakova will make an unusually close pass by Earth on Saturday. Watch it boogie across the morning sky this week!
North American observers can watch the Moon flirt with Earth’s shadow on the evening of February 10th.
An intermediate-mass black hole might be lurking within a dense stellar cluster — a discovery that could point toward how these oddities form.
New images of two pulsars show beautiful, complex clouds of charged particles that illustrate the power dynamics in and around these spinning neutron stars.
NASA's Juno spacecraft continues to give us amazing views of Jupiter, now from its fourth perijove pass.
Unlucky stars serve as brilliant but short-lived snacks when they wander too close to supermassive black holes. But one such black hole is still gnawing on its stellar meal after a decade.
Observations of lensed quasars suggest the universe is expanding more quickly than we thought. But they contradict what we know about the young universe.
A recent study found micrometeorites in piles of dirt collected from urban European rooftops.
Astronomers have discovered a giant cosmic void that explains why our Local Group of galaxies is moving through the universe as fast as it is.
Download our monthly astronomy podcast to spot Venus and Mars in the west — and a celestial unicorn hiding in plain sight among the stars.
Astronomers don’t understand how the galaxy’s most massive stars form, but a new simulation sheds light on the process of stellar birth.
A unique method reveals the influence of a planet within the stellar disk around TW Hydrae.
NASA's Cassini returns stunning new views of Daphnis and friends from its ring-grazing orbits.
Explore two unique astronomical sites that lie under the dark skies of Namibia - the HESS high-energy array and the Africa Millimeter Telescope.
The most distant stars discovered in the Milky Way might have been ripped away from a companion galaxy.
The asteroid 4 Vesta shines at 6th magnitude in January 2017, visible in Gemini with binoculars or a small telescope.
Japan's Venus orbiter has witnessed a huge atmospheric wave that spans the globe.
Astronomers suspect the Sun’s closest stellar neighbor desiccated its potentially rocky exoplanet, destroying the planet’s chances for habitability.
New studies offer contrasting scenarios for making the Moon. One argues for a one big splat early in solar-system history; a second envisions a score of lesser blows that built up the Moon over time; and a third suggests water was involved.
Astronomers have discovered an object in the active galaxy Cygnus A that wasn’t there before.
The Sun has been unusually quiet lately. Since the start of 2017, only a single tiny sunspot has made a brief appearance on the solar disk.
Astronomers have observed the motion of distant star clusters to measure our galaxy’s mass. The new estimate places the Milky Way in the lightweight class of galaxies.
Astronomers have combined data from the Voyager spacecraft and the Hubble Space Telescope to probe the stuff between the stars.
Last week, NASA announced two new missions set to explore the earliest remnants of the solar system: asteroid 16 Psyche and Jupiter's Trojan asteroids.