space news from around the webin association with SpaceNews

Jupiter's radiation belts stronger than expected
Posted: Thu, Mar 29, 2001, 2:22 PM ET (1922 GMT)
Galileo at Jupiter illustration Belts of charged particles surrounding Jupiter are more powerful than previously estimated, a finding that could spell trouble for future spacecraft missions to the giant planet. Measurements taken by the Cassini spacecraft as is flew by Jupiter late last year, combined with ground-based studies, show that there are fewer high-energy, but far more lower-energy, electrons orbiting Jupiter in belts shaped by the planet's powerful magnetic field. The net result, scientists said Wednesday, is that the belts are overall more powerful and thus more hazardous to any spacecraft that would venture through them. The harshest radiation is within 300,000 kilometers of the planet, close enough not to have been a problem for Galileo, which continues to operate despite being exposed to several times the radiation it was designed to survive. The next mission slated for Jupiter, Europa Orbiter, would also avoid the harshest belts, but would still be exposed to enough radiation that shielding of key systems, such as electronics, will be required.
Related Links:
<<previous article   next article>>
news in brief
Russia plans to resume crewed Soyuz launches in December
Posted: Sun, Nov 4 9:00 AM ET (1400 GMT)

China launches Beidou satellite
Posted: Sun, Nov 4 8:59 AM ET (1359 GMT)

Dawn mission declared over
Posted: Sun, Nov 4 8:58 AM ET (1358 GMT)

news links
Tuesday, November 13
Comment: Is Rocket Lab even a New Zealand company?
Newstalk ZB (New Zealand) — 6:34 am ET (1134 GMT)
Rocket Lab Debuts Low-Cost Rocket in First Commercial Launch
Popular Mechanics — 6:33 am ET (1133 GMT)
Rocket-maker ArianeGroup to cut 2,300 jobs
AFP — 6:31 am ET (1131 GMT)
Fleet Space sends Australia's first commercial mini-satellites into orbit
Business News Australia — 6:31 am ET (1131 GMT)

about   ·   ·   mailing list