1.   Akira Kato of the Japanese National Space Development Agency said moves were afoot to bring back satellites in lower orbits when their jobs were done.

2.   That could be true if Boeing is also aiming for telecommunications customers with smaller satellites in lower orbits, Pike said.

3.   The new generation of satellites will use much lower orbits, several hundred miles above the earth, so the delays are unnoticeable.

4.   The leak caused the shuttle to reach a slightly lower orbit than planned.

5.   They believe the leak contributed to a one second early engine shutdown that left the Columbia in a slightly lower orbit than intended.

6.   The cargo ships would use their engines to direct Mir into lower orbits.

7.   Two years later, he was aboard the Challenger when one of its engines failed during ascent and the shuttle settled into a lower orbit.