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


Scientists see comets, sun interact
Posted: Tue, Oct 2, 2007, 8:03 AM ET (1203 GMT)
Comet tail detachment illustration (NASA) A solar storm ripped away one comet's tail while another comet slowed down the solar wind far from the Sun, astronomers said on Monday. In one paper to be published this month in the Astrophysical Journal, NASA researchers reported how a coronal mass ejection collided with the comet Encke when the comet was about as far from the Sun as the planet Mercury. The collision, witnessed by the STEREO-A spacecraft in April 2007, ripped away the comet's tail. Researchers suspect that a process known as magnetic reconnection may have released enough energy to strip away the tail. Separately, University of Michigan scientists, in a paper in the same journal, reported on the interaction of the solar wind with the comet McNaught, as witnessed by instruments on the Ulysses spacecraft. Researchers found that the solar wind's velocity slowed by half after passing through the comet's ion tail, more than 250 million kilometers from the Sun. The physics of the interaction between the solar wind and comet tail remain unclear.
<<previous article   next article>>
news in brief
Kepler goes into safe mode as fuel runs low
Posted: Sun, Jul 8 9:43 AM ET (1343 GMT)

Inmarsat rejets EcoStar takeover bid
Posted: Sun, Jul 8 9:42 AM ET (1342 GMT)

Shuttle-era engine tested for DARPA spaceplane
Posted: Sun, Jul 8 9:41 AM ET (1341 GMT)

news links
Monday, July 16
A look behind the scenes at the Parker Solar Probe
Johns Hopkins University — 12:12 am ET (0412 GMT)
MIT's 'Orbit Weaver' Turns Astronauts into Spiders
Motherboard — 12:11 am ET (0411 GMT)
Hello, Crew Dragon: SpaceX inches closer to testing new manned capsule
Orlando Business Journal — 12:10 am ET (0410 GMT)


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