LEO, MEO & GEO Satellite Systems : A Comparison zarrata.com 27 Jan 2012 | 08:03 pm

Satellite Systems can be classified based upon their orbits as low earth orbit, medium earth orbit & geostationary earth orbit systems. Geostationary is also the highest earth orbit and hence, also pr...

Five short links petewarden.typepad.com 24 Jul 2013 | 04:22 am

Photo by Dezz Hillbilly Tracking of Low Earth Orbit Satellites – A member of the Southern Appalachian Space Agency gives a rundown of his custom satellite tracking hardware and software, all built fr...

GPS (Global Positioning System) gadget-smartphone-tips.blogspot.com 26 Apr 2010 | 01:19 am

Global Positioning System was developed by the United States' Department of Defense. It uses between 24 and 32 Medium Earth Orbit satellites that transmit precise microwave signals. This enables GPS r...

December 21, 1968 vidurneeti.com 23 Jun 2012 | 03:08 am

On December 21, 1968  Apollo 8, the second crewed mission in the United States Apollo space program,  was launched. It became the first human-crewed space craft to leave Earth orbit, reach the Earth’s...

UFO ABORTS EARTH ORBIT ENTRY? - Captured on camera ovnipr.blogspot.com 19 Jun 2012 | 08:08 pm

Cancer Claimed The Lives of The First U.S. Astronaut Girl weediscuss.com 2 Aug 2012 | 02:54 am

WASHINGTON – The U.S. space flight The world lost one of the characters ever recorded in history. Sally Ride, who had been in Earth orbit and was recorded as the first U.S. woman in space, died Monday...

Asteroid cities? bautforum.com 22 Feb 2013 | 11:14 am

I remember reading this novel about asteroid miners and places like Ceres city. Has NASA discussed bringing a suitable asteroid into earth orbit and using it as a base or elevator ballast. Seems to me...

Push An Asteroid Into Earth Orbit? futurepundit.com 14 Aug 2013 | 11:20 am

A dozen small asteroids have orbits which make a nudge into an Earth Lagrange point doable.. By looking through the catalog of known asteroids, aerospace engineers have identified 12 candidates that w...

6. Elysium - $7.1M journalhome.com 27 Aug 2013 | 01:00 pm

In a future in which the privileged reside on an Earth-orbiting space station named Elysium and the less fortunate live on the surface of the blighted, overpopulated planet below, one man dares to def...

General Question Orbital stability orbiter-forum.com 27 Aug 2013 | 05:27 am

I noticed some difference between LEO and low Moon orbits: orbits around the Moon are much more stable than LEO orbits (I always play with all perturbations on). It's much easier to do sync and rendez...