spacetoday.net: space news from around the webin association with SpaceNews

Astronomers detect gas streams linked to new planets
Posted: Thu, Jan 3, 2013, 6:46 AM ET (1146 GMT)
Protplanet gas streams illustration (ESO) Radio astronomers announced Wednesday that they have detected for the first time streams of gas flowing into a star created by the formation of new planets. Astronomers detected the gas streams around HD 142527, a star 450 light-years from the Earth, in observations by the ALMA radio telescope array in Chile. The streams of gas come are drawn from an outer protoplanetary disk surrounding the star by gas giant planets that formed in a gap between that outer disk and the inner one. Some of the material in the streams are captured by the new planets, but much of it continues to flow inward to the inner disk, replenishing it as the star itself grows. The development of these gas streams had been predicted by models of planetary formation, but had not been directly observed before now. The findings appear in the latest issue of the journal Nature.
<<previous article   next article>>
news in brief
Russia launches foreign military satellite
Posted: Sat, Dec 20 12:15 PM ET (1715 GMT)

Soyuz launches four O3b satellites
Posted: Fri, Dec 19 7:22 AM ET (1222 GMT)

SpaceX postpones ISS cargo mission to January
Posted: Fri, Dec 19 7:05 AM ET (1205 GMT)

news links
Saturday, December 20
Has SA's Kondor-E now flown?
Politicsweb — 12:01 pm ET (1701 GMT)
Third MUOS Satellite Gets Launch Date
Defense News — 9:25 am ET (1425 GMT)
Gaining space
Indian Express — 9:19 am ET (1419 GMT)
Rocketing to success
The Tribune (India) — 9:19 am ET (1419 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list