Research challenges dark energy, cosmological constant
Posted: Thu, Jan 12 7:05 AM ET (1205 GMT)
A new study suggests that "dark energy", the mysterious energy that is causing the expansion of the universe to accelerate, may have been less powerful...

Boeing launch strike continues
Posted: Wed, Jan 11 6:00 AM ET (1100 GMT)
A strike by 1,500 Boeing employees involved with the Delta launch vehicle program continues, with recent talks unable to bring both sides closer to...

Hubble spies close companion to Polaris
Posted: Wed, Jan 11 5:52 AM ET (1052 GMT)
Astronomers using the Hubble Space Telescope said this week that they have seen for the first time a small companion star to Polaris. The existence...

Astronomers prove existence of black hole event horizon
Posted: Tue, Jan 10 7:36 AM ET (1236 GMT)
Astronomers said Monday that they have proven the existence of the event horizon, the "point of no return" that surrounds black holes. An MIT and...

MDA shifts Radarsat-2 launch to Soyuz
Posted: Tue, Jan 10 7:14 AM ET (1214 GMT)
MacDonald, Dettwiler and Associates (MDA), the Canadian company that is the prime contractor on the Radarsat-2 satellite, has shifted the launch of the spacecraft...

United Launch Alliance wins preliminary approval
Posted: Mon, Jan 9 6:46 AM ET (1146 GMT)
Defense Department officials have given preliminary approval to the proposed merger of Boeing and Lockheed Martin's government launch operations, the Wall Street Journal reported...

Report: Genesis spacecraft test skipped
Posted: Mon, Jan 9 6:39 AM ET (1139 GMT)
Lockheed Martin engineers skipped a test that could have caught a problem with NASA's Genesis spacecraft, according to a newspaper report. The Rocky Mountain...

Astronomers measure size of Charon
Posted: Mon, Jan 9 6:32 AM ET (1132 GMT)
Astronomers announced last week that they used a stellar occultation to measure the size of Charon, Pluto's largest moon, and confirm that the world...

Topex/Poseidon mission ends
Posted: Fri, Jan 6 8:17 AM ET (1317 GMT)
Topex/Poseidon, a joint US-French earth sciences mission, officially ended Thursday because of spacecraft problems. The spacecraft, launched in 1992, was designed to operate...

NASA makes deal for Soyuz rides
Posted: Fri, Jan 6 8:05 AM ET (1305 GMT)
NASA has signed an agreement with the Russian space agency Roskosmos to purchase seats on Soyuz flights for a little over $20 million each, agency...