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1) Studies on meteoroid streams are briefly and systematically presented.

2) The space debris and meteoroid environment are defined followed by the formulation of the general weight objective function.

3) That's when a meteoroid entered the earth's atmosphere over the Mediterranean and was picked up by U.

4) That's when a meteoroid entered the earth's atmosphere over the Mediterranean and was picked up by U.S. early-warning satellites on the lookout for high-altitude explosions and incoming missiles.

5) "Meteoroid impacts into, and collisions among, these bodies and the moonlet could liberate dust to form the arc,[http://sentencedict.com/meteoroid.html] " said Hedman.

6) When a meteoroid enters the atmosphere, it compresses the air in front of it.

7) When a meteoroid enters the atmosphere of the earth (becoming a meteor), it is actually the speed compressing the air in front of the object that causes it to heat up.

8) High velocity impact on spacecraft by meteoroid and space debris is a threat to its safety operation, that can in turn lead to significant damage and catastrophic failure.

9) This mid-air explosion causes the dispersion of the material over a large oval-shaped area. The orientation of this oval is determined by the flight path of the meteoroid.

10) Hypervelocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation that can in turn lead to significant damage and catastrophic failure.

11) Shortly before the uninhabited space station reached orbit in .May 1973,aeroaynamic pressure ripped off a meteoroid and heat shield.

12) Turn the globe by just a few hours earlier on that day in June and the meteoroid would have been over the border of Pakistan and India–exactly where everyone was fearing a nuclear attack.

13) Most of the spacecrafts are suffering from the bad space environment, and the space debris, included meteoroid and orbital debris, imperiled the spacecrafts most.

14) Such massive rings would be less sensitive to the darkening effect of meteoroid bombardment, thus explaining their brightness today.

15) The cometary ejection play a crucial role in formation and evolution of the meteoroid stream.

16) And even smaller type of interplanetary debris is the meteoroid.

17) Fengyun's loss also could be due to a massive meteoroid or orbital debris hit, occurring coincidentally within range of China's main space launch base. But the odds of that are even smaller.

18) High velocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation, that can in turn lead to significant damage and catastrophic failure.