The historic mission to explore a comet ends in dramatic fashion on September 30th.
This month is your last chance to catch Saturn in the evening sky. But Mars is still hanging around, and Venus is climbing higher each evening.
ALMA, the largest telescope array in the world, took a look at the Hubble Ultra Deep Field, and revealed the cosmic history of star formation.
China recently unveiled FAST, the world's largest single dish radio telescope.
A new e-digest from the International Astronomical Union’s Minor Planet Center gives the public a head’s up on passing asteroids.
The fall equinox (spring equinox for the Southern Hemisphere) comes on September 22, 2016, at 4:02 p.m. Eastern Daylight Time (20:02 UT).
New observations suggest this unstable star let off some steam before its famous 19th century “Great Eruption” . . . but there’s more to the story than meets the eye.
Back in January, a team of observers had a hunch that Comet 332P/Ikeya-Murakami was rapidly falling apart — and they were right!
A team in Argentina unearths a spectacular space rock, possibly the world's third largest single find.
Skywatchers in the Eastern Hemisphere will see tonight's full moon skirt through Earth's dusky outer shadow.
NASA's Curiosity rover took time out from its exploration of Mars to capture some dramatic layering in sandstone cliffs.
Astronomers have caught a galaxy cluster in the prime of its life — perhaps just before it transitions to retirement.
The European Space Agency's Gaia mission has released its first data release, mapping a billion stars across the Milky Way and beyond
NASA's Osiris-REX spacecraft launched successfully from Cape Canaveral on September 8th and is headed to asteroid Bennu for a dramatic sample return mission.
On August 27th, NASA's Juno made its closest pass to the giant planet — here's what we learned.
It's taken nearly two years, but a dedicated search of craggy Comet 67P/Churyumov-Gerasimenko has turned up the long-lost landing craft Philae.
The annular solar eclipse visible over south-central African and parts of the Indian Ocean was a dazzling crowd pleaser!
Early evening features Mars and Saturn toward south, but keep an eye out for brilliant Venus climbing up from the west during twilight.
The Sun's second coverup of the year will be an annular solar eclipse whose path crosses south-central Africa and northern Madagascar on September 1st.
Astronomers have found a unique trait of spiral arms that supports a longstanding idea about where these patterns come from.
Dust and gas between stars would pose a threat to spacecraft en route from Earth to the Alpha Centauri system — and scientists are seriously considering the problem now that the prospect of interstellar travel is no longer sci-fi.
Astronomers have discovered a planet in the habitable zone of the closest star to the Sun.
Feared lost for almost two years, NASA's Stereo B solar observatory is now back in (tentative) contact with mission control.
The discovery of trans-Neptunian object 2011 KT19 in a strange orbit deepens a key mystery in the outer solar system.
Living in voids might be tangentially responsible for three small galaxies’ recent flurries of starbirth.