SUNSET: 
Space-Station Astronomy
Solar telescopes are set to be installed on the International Space Station today. A trio of instruments will be added to the new Columbus module.
NASA Wants You!
The US space agency wants to give its soon-to-be-launched gamma-ray observatory a new name, and it has opened the floor for nominations. Do you have the perfect moniker for the next Great Observatory?
Mercury's "Better Half"
When it swept by the innermost planet on January 14th, NASA's Messenger spacecraft showed us a side of Mercury never before seen. After two weeks of intensive study, mission scientists have shared some of the flyby's intriguing results — including views of a "spidery" crater that has them stumped.
A Stardust-Free Comet
When NASA sent a spacecraft to grab samples of a comet and return them to Earth, scientists had high hopes that they'd finally be able to decipher how the solar system formed. Boy, were they wrong!
A Bird's-Eye View of the Sun
What's it like to coast high over our star? The European-built spacecraft Ulysses is doing that right now — for its third and likely final time.
Reunion with Mercury
For the first time in nearly 33 years, mission controllers have guided a spacecraft past Mercury, a fire-and-ice world that may hold many keys to the solar system's formation.
High Hopes for Hubble
Preparations are well under way for the August 2008 servicing mission to the Hubble Space Telescope.
Cassini's Popularity Contest
After a month-long contest, the Cassini Imaging Central Laboratory for Operations (CICLOPS) has announced which images of Saturn are fan favorites.
You Can't Go Home (or Work) Again
Visiting where I worked 20 years ago reveals a changed place.
Deep Impact's New Assignments
Put to sleep after its smash success in 2005, one of NASA's interplanetary craft is getting a chance to search for extrasolar Earths and to visit a second comet.
Lightning on Venus
The world next door seemed hellish enough with an atmosphere 90 times the sea-level pressure on Earth and surface temperature of 900°. Now, scientists say, there's lots of lightning — and what little water it has seems to be escaping to space.
Earth at Night: Not a Pretty Sight
Rosetta's nighttime snapshots of the Eastern Hemisphere show that the fight against light pollution has a long way to go.
Call for Images of Venus
Venus Express project scientists are inviting amateur and professional astronomers to contribute Earth-based images of the planet made at infrared, visible, and ultraviolet wavelengths.
Good Morning Earth
The Kaguya spacecraft provides a nice way to start the day with a look back home.
Rosetta Attacks!
Briefly mistaken for an asteroid headed toward Earth, a European-built comet chaser zips by en route to its deep-space rendezvous.
China Reaches the Moon
A Chinese spacecraft named Chang'e 1 is preparing to study the Moon at close range after successfully settling into lunar orbit.
The Record Stellar-Mass Black Hole
In a nearby galaxy, astronomers find the biggest-ever small black hole.
Seeing More Red
A new series about going to Mars premieres this week. But that's just the beginning of your multimedia adventure.
Meteor Showers on Mars
Scientists now know what meteor showers occur in the rarefied atmosphere above Mars. So how come NASA's intrepid rovers can't see them?
Titan's Frigid Shores
NASA's Cassini orbiter continues mapping Saturn's largest moon — and finding prime lakefront real estate.