Jason-1 Will Make its 30,000th Orbit
The Jason-1 spacecraft will make its 30,000th science orbit this week. Revolution number 30,000 will begin at 10:27 UTC (3:27 a.m. PDT) on June 14th, 2008 and will be completed at 12:19 UTC (5:19 a.m. PDT). From its vantage point 1,336 kilometers (830 miles) above Earth, Jason-1 uses its radar altimeter to precisely measure the topography of the ocean surface.Jason-1 was launched December 7, 2001, as the follow-on to Topex/Poseidon, which successfully collected science data from 1992 to 2005. Both missions are a partnership between NASA and the French space agency, CNES. Covering 95% of Earth’s ice-free ocean every 10 days, Jason-1 continues the critical data record of ocean surface topography, increasing our understanding of ocean circulation and the oceans’ role in climate. ….
Read the rest here. International Mission Studying Sun to Conclude
After more than 17 years of pioneering solar science, a joint NASA and European Space Agency mission to study the sun will end on or about July 1.The Ulysses spacecraft has endured for almost four times its expected lifespan. However, the spacecraft will cease operations because of a decline in power produced by its onboard generators. Ulysses has forever changed the way scientists view the sun and its effect on the surrounding space. Mission results and the science legacy it leaves behind were reviewed today at a media briefing at European Space Agency Headquarters in Paris.