Gravity Probe B confirms two Einstein theories

(PhysOrg.com) -- Stanford and NASA researchers have confirmed two predictions of Albert Einstein's general theory of relativity, concluding one of the space agency's longest-running projects.

Polar ice adding more to rising seas: study

(PhysOrg.com) -- The Greenland and Antarctic ice sheets are losing mass at an accelerating pace, according to a new NASA-funded satellite study. The findings of the study -- the longest to date of changes in polar ice sheet ...

Satellite Used in Polar Research Enters Retirement

(PhysOrg.com) -- After a long career providing communications support, NASA's Tracking and Data Relay Satellite (TDRS) 1 is retiring. From 1983 to 1998, TDRS-1 allowed NASA to talk to other satellites in orbit. From 1998 ...

The PARASOL Satellite Moving Off the A-Train's Track

(PhysOrg.com) -- After nearly 5 years of concurrent operations with the Afternoon Constellation, known as the "A-Train," the PARASOL satellite is going on another orbit "track." The A-Train includes a number of NASA satellites ...

Final launch of Ariane 5 GS completes busy year

(PhysOrg.com) -- Last week, an Ariane 5 GS launcher lifted off from Europe’s Spaceport in French Guiana on a journey to place the French military reconnaissance satellite Helios-2B into Sun-synchronous polar orbit. Flight ...

NASA Assessing New Roles for Ailing QuikScat Satellite

(PhysOrg.com) -- NASA mission managers are assessing options for future operations of the venerable QuikScat satellite following the age-related failure of a mechanism that spins the scatterometer antenna. This spinning antenna ...

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