Astronomers discovered largest known exoplanet
Posted: Wed, Aug 8 7:42 AM ET (1142 GMT)
Astronomers announced this week that they have discovered an extrasolar planet with the largest radius measured to date, making the planet's density unexpectedly low....

STS-118 countdown underway
Posted: Mon, Aug 6 8:41 PM ET (0041 GMT)
The countdown for Wednesday evening's launch of the space shuttle Endeavour remains on track with no significant problems reported. Countdown clocks for the STS-...

Spysat declared a failure
Posted: Mon, Aug 6 8:34 PM ET (0034 GMT)
The National Reconnaissance Office (NRO) has written off an experimental spy satellite that has suffered problems since its launch late last year. Reuters reported late...

Progress docks at ISS
Posted: Mon, Aug 6 1:59 PM ET (1759 GMT)
A Progress cargo spacecraft carrying supplies for the International Space Station docked with the orbiting outpost on Sunday afternoon. The Progress M-61 spacecraft (called...

Phoenix launched on mission to Mars
Posted: Sat, Aug 4 8:58 AM ET (1258 GMT)
A Delta 2 successfully launched NASA's latest mission to the Red Planet on Saturday morning. The Delta 2 7925 lifted off from pad 17A...

Shuttle launch postponed to Wednesday
Posted: Fri, Aug 3 6:27 PM ET (2227 GMT)
Work required to fix an air leak in the shuttle Endeavour has pushed its launch back 24 hours, NASA announced Friday afternoon. The shuttle, which...

Cassini data points to origin of Saturn ring
Posted: Fri, Aug 3 8:19 AM ET (1219 GMT)
Scientists studying data from NASA's Cassini spacecraft have discovered what they believe is the origin for one of the more unusual rings surrounding the...

Phoenix ready for launch
Posted: Fri, Aug 3 8:06 AM ET (1206 GMT)
NASA's Phoenix Mars mission is on track to launch on Saturday morning, project officials said Thursday. A Delta 2 rocket is scheduled to launch...

Progress launched to ISS
Posted: Thu, Aug 2 9:04 PM ET (0104 GMT)
A Progress cargo spacecraft was launched late Thursday on a resupply mission to the International Space Station. A Soyuz rocket carrying the Progress M-61...

Shuttle cabin leak under investigation
Posted: Wed, Aug 1 8:24 AM ET (1224 GMT)
Technicians are investigating an air leak in the cabin of the space shuttle Endeavour that could delay next week's launch. The air leak had...