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1. The external tank is connected to the orbiter at three places.

2. The five Lunar Orbiter spacecraft, launched at three-month intervals in 1966 and 1967, were all outstandingly successful.

3. The actual path taken by the orbiter is complex and designed to minimize the effect of air resistance on the craft.

4. On return to Earth the orbiter orients itself so that the underside is facing down and slightly forwards.

5. For most of the mission the orbiter will circle the Earth with the payload bay open and facing down towards the ground.

6. Comparison of the Orbiter and Lauder data permits a detailed portrait of the origin and evolution of a giant dust storm.

7. The crane supports the orbiter while it is bolted to the external tank.

8. Two years later NASA lost the Mars Climate Orbiter and the Mars Polar Lander.

9. This image was generated the by Mars Orbiter Laser Altimeter, or MOLA, an instrument that was aboard NASA's Mars Global Surveyor.

10. The lander would send this information to the orbiter and then back to Earth.

11. The orbiter lifts off vertically like an expendable launch vehicle but makes an unpowered descent similar to a glider.

12. The orbiter is the part of the shuttle that looks like an airplane.

13. The Lunar Reconnaissance Orbiter (LRO) has conducted an ongoing survey of temperatures on the moon's surface through its Diviner Lunar Radiometer Experiment.

14. Each spacecraft had two parts: an orbiter and a lander.

14. Sentencedict.com is a online sentence dictionary, on which you can find nice sentences for a large number of words.

15. The orbiter has now been bolted to its external fuel tank and is set to go on its 39th and final mission to the International Space Station on 1 November.

16. The 2008 lunar orbiter could fill in the gaps by charting the moon's surface with radar imaging, laser altimetry and high-resolution spectroscopy.

17. Nasa's Lunar Reconnaissance Orbiter has used its Diviner instrument to probe the insides of permanently shadowed craters on Earth's satellite.

18. But the orbiter results will likely settle the fascinating question of whether Europa has an ocean.

19. This image was taken by the Lunar Reconnaissance Orbiter Camera, or LROC(sentencedict.com), which consists of a pair of narrow-angle cameras and a single wide-angle camera.

20. Thrilled, Barlow scanned computer data on 42, 283 Martian craters photographed by the Viking Orbiter since the mid-1970s.

21. There will be 19 main engines for the shuttle - each orbiter carries three, the rest are spares.

22. Note that on the early flights the external tank was painted to match the orbiter.

23. Uyematsu worked on flight system software and hardware, worked with the launch teams in Kennedy's firing rooms and on the orbiter gaining a remarkable amount of experience.

24. NASA's JPL built and manage the rovers and the Mars Reconnaissance Orbiter Mission Directorate, Washington.

25. NASA is using the Deep Space Network and the Mars Odyssey orbiter to listen if the rover reawakens.

26. Friday's ascent would be the 135th and last in the 30-year orbiter programme.

27. In June, NASA launched two new spacecraft to the moon, the $504 million Lunar Reconnaissance Orbiter and the $79 million Lunar Crater Observation and Sensing Satellite, or Lcross.

28. Dissociation and ionization of air bring on lower drag coefficients of the orbiter than that obtained from perfect gas model, while the location of pressure center moves forward.

29. While only one side of the moon faces Earth, we still have an idea of what the far side looks like thanks to NASA's Lunar Reconnaissance Orbiter Camera, or LROC, Wide Angle Camera, or WAC.

30. A compelling demonstration of its existence or absence may be reached from gravity and altimetry data in the proposed Europa orbiter.