A new e-digest from the International Astronomical Union’s Minor Planet Center gives the public a head’s up on passing asteroids.
The historic mission to explore a comet ends in dramatic fashion on September 30th.
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.
NASA's Curiosity rover took time out from its exploration of Mars to capture some dramatic layering in sandstone cliffs.
On August 27th, NASA's Juno made its closest pass to the giant planet — here's what we learned.
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.
Careful tracking of NASA's Dawn spacecraft reveals that Ceres has a rocky core and a thick ice-and-salt crust. Maybe a briny ocean still lies buried inside.
Cassini radar observations reveal a channel system on Saturn’s biggest moon, Titan, that is drowned in liquid methane.
The dwarf planet has a paucity of big pockmarks because it has somehow erased them.
New research on seasonal streaks in Martian canyons provides evidence against underground pools of water.
First spied last year, an object designated 2015 RR245 turns out to be one of the largest and most distant objects yet found orbiting the Sun.
After a 5-year-long journey, NASA's latest emissary to the largest planet in the solar system has arrived at its destination.
Spectral observations by NASA’s Dawn spacecraft reveal that the dwarf planet’s mysterious beacon is made of salt.
A recently discovered asteroid plays leapfrog with Earth as they both orbit around the Sun.
Astronomers have reconstructed 18-century telescopes to observe sunspots and better understand solar cycles.
An innovative new meteor detection network will engage researchers and the public in a search for space rocks.
Comet 67P/Churyumov-Gerasimenko appears to have split into two segments that briefly orbited each other and then slowly merged into a new configuration.
Astronomers have new radio images of Jupiter that allow them to see deep into its atmosphere.
Planetary scientists are counting on amateur observations to enhance the results from NASA's forthcoming Juno mission.
A Kuiper Belt object discovered nearly a decade ago turns out to be much darker — and thus larger — than thought. It's also an especially slow spinner.
During two Martian years, Curiosity tracks seasonal patterns in atmosphere, temperature, and maybe even methane.
Join in Monday, May 9th, as tiny Mercury crosses the Sun's disk for the first time since 2006. S&T's exclusive video feeds and expert interviews will air throughout the 7½-hour event.
Astronomers have been searching for companions to the distant dwarf planet Makemake for years. Finally, they've spotted one.