SUNSET: 
Comet 45P Returns to Dark Skies
With the Moon out of the picture, amateurs can once again check in on comet 45P/H-M-P, now making an appearance in the evening sky.
Scientists Recreate Space Weather of 400 Years Ago
Scientists are studying 400-year-old data to predict space weather in the coming decades — and it seems that future may hold fewer Northern Lights.
Meteorites Date Demise of Solar Nebula
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 Comet 45P Makes Close Earth Flyby
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!
February's Deep Penumbral Lunar Eclipse
North American observers can watch the Moon flirt with Earth’s shadow on the evening of February 10th.
Best Evidence Yet for an Intermediate-Mass Black Hole
An intermediate-mass black hole might be lurking within a dense stellar cluster — a discovery that could point toward how these oddities form.
Two Pulsars Blowing in the Wind
New images of two pulsars show beautiful, complex clouds of charged particles that illustrate the power dynamics in and around these spinning neutron stars.
Juno Swoops Past Jupiter's South Pole
NASA's Juno spacecraft continues to give us amazing views of Jupiter, now from its fourth perijove pass.
Black Hole Feeds on Star for a Decade
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.
H0Li COW! Is Our Universe Expanding Faster Than We Thought?
Observations of lensed quasars suggest the universe is expanding more quickly than we thought. But they contradict what we know about the young universe.
Micrometeorites Found on City Rooftops
A recent study found micrometeorites in piles of dirt collected from urban European rooftops.
Cosmic Void “Pushes” Milky Way
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.
Tour February's Sky: How To Find Monoceros
Download our monthly astronomy podcast to spot Venus and Mars in the west — and a celestial unicorn hiding in plain sight among the stars.
Massive Stars Grow By Eating Finger Food
Astronomers don’t understand how the galaxy’s most massive stars form, but a new simulation sheds light on the process of stellar birth.
Hubble Catches Exoplanet Shadow Play
A unique method reveals the influence of a planet within the stellar disk around TW Hydrae.
Cassini Spies Daphnis Making Waves
NASA's Cassini returns stunning new views of Daphnis and friends from its ring-grazing orbits.
The Incredible Skies of Namibia
Explore two unique astronomical sites that lie under the dark skies of Namibia - the HESS high-energy array and the Africa Millimeter Telescope.
Origin of Our Galaxy's Most Distant Stars
The most distant stars discovered in the Milky Way might have been ripped away from a companion galaxy.
Vesta, Brightest Asteroid, Now High Overhead
The asteroid 4 Vesta shines at 6th magnitude in January 2017, visible in Gemini with binoculars or a small telescope.
Akatsuki Spies Massive Wave on Venus
Japan's Venus orbiter has witnessed a huge atmospheric wave that spans the globe.
