News tagged with leo satellites

Nearby galaxy boasts two monster black holes, both active

(PhysOrg.com) -- A study using NASA's Swift satellite and the Chandra X-ray Observatory has found a second supersized black hole at the heart of an unusual nearby galaxy already known to be sporting one.

Space & Earth / Astronomy

Jun 10, 2011 | 4.8 / 5 (14) | 41 |

Precise orbit determination for Jason-1 satellite using on-board GPS data with centimeter-level accuracy

The Jason-1 satellite obits have been computed using the on-board GPS data and the SHORDE-III procedure. Various orbit validations, including comparison with the Precise Orbit Ephemeris produced by JPL, orbit overlaps, and ...

Space & Earth / Space Exploration

Feb 02, 2009 | 4.5 / 5 (2) | 0