351 results

Astrobiology

Martian Dirt is Friendly to Life

The Phoenix lander's first wet chemical analysis of the Martian surface confirms water’s thumbprint and finds the kinds of inorganic minerals you'd have in a backyard garden.

Stellar Science

The Most Massive Star Yet?

Searching the core of one of the densest young star clusters in the Milky Way, scientists may have beat out primetime TV in the search for the newest big star.

Ulysses spacecraft

Spacecraft and Space Missions

Ulysses' Space Odyssey Ends on July 1st

The only space mission ever to study the Sun’s poles directly will turn off at month’s end after a long life of trial and triumph.

Saturn aurorae by Hubble

Solar System

The Mystery of Saturn’s Double Aurorae

New infrared observations reveal a second auroral ring on Saturn that may help astronomers understand what causes the planet's aurorae in the first place.

Cosmology

Hubble Looks into the Coma Cluster

The HST captures a pristine image of various galaxy types grouped together, but what is most intriguing is what the image doesn't reveal.

Solar System

Moonlets Perturb Saturn’s Ring

New observations from Cassini show small satellites are responsible for Saturn's F ring looking a little frazzled.

Spacecraft and Space Missions

NASA UV Satellite Powers Down

After five years in orbit, CHIPSat enters a hibernation that may — or may not — be permanent.

Exoplanets

Signs Found of Many “Super-Earths”

Jupiter-like exoplanets are outnumbered by smaller planets three to one, say astronomers describing their cutting-edge work in progress.

Solar System

Jupiter Sports a Third Red Spot

Jupiter's new spot may herald global climate change for the gas giant.

Spirit's tracks uncover silica deposits that hint at past hydrothermal activity.

Spacecraft and Space Missions

Mars Rover Unearths Ancient Hot Springs

The Mars rover Spirit uncovers evidence for hydrothermal activity on the Red Planet and a possible cache for microbial fossils.

Stellar Science

Puny Star's Big Flare Wows Astronomers

While a NASA satellite looked on, last month a red dwarf in Lacerta erupted with a titanic — and unexpected — burst of energy.

1 16 17 18
Advertisement
Advertisement
Advertisement
Advertisement