US satellite hits lunar test for water cost $ more than 70 million

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October 9 7:38 P.M. Beijing time, NASA lunar crater Observation and sensing satellite launch vehicle crashed into a crater near the moon's south Pole, opening the search for water on the Moon for scientific exploration.

After nearly 4 months of flying, the US centaur, lunar crater observation and sensing satellite crashed into the lunar Antarctic on 9th to look for clues to the existence of water ice under the monthly table, but NASA's projected flash phenomenon did not appear as expected.

An arrow, a star, a month.

7:31 EST (19:31 GMT), Centaur Rockets first hit the lunar Antarctic Cabeus crater crater at a speed of about 9000 kilometers per hour. The Centaur is the second stage of the launch vehicle that sends the lunar crater observation and sensing satellites into space. After more than 4 minutes, lunar crater observations and sensing satellites also hit the moon "as promised."

The expected phenomenon did not occur

NASA has previously said it weighs about 2. After hitting the moon, the 2-ton Centaur rocket should provoke up to 10 km of dust and a flash of about 30 seconds, but after the impact, the flash phenomenon did not appear as expected, and the detectors were not transmitted back to the image in real time.

Early in the morning to appreciate the impact of the moon, some astronomers are also disappointed, I do not know what happened, and even think this hit the moon some "off."

Whether there is water waiting to be judged

NASA's 9th press conference announced that the Bureau's Observatory and its spacecraft had observed two collisions with the moon on the day of the Centaur, lunar crater observation and sensing satellites, but it would take some time to analyze the data. NASA's chief scientist, Anthony Colaprete, says it will take weeks before they can confirm whether the moon has water.

However, scientists attending the conference also pointed out that the Centaur rocket hit the moon should be a large amount of dust, but ground scientists did not observe this phenomenon, in addition, the ground telescope also did not observe the moon after the collision of debris cloud.

In addition, NASA officials said the lunar impact on the moon is similar to the impact of an eyelash on a jet plane, so there is no need to worry about a lunar collision that could alter the moon's orbit or hit the earth with a space boulder. The moon has been hit 4 times by Space rocks in the last one months, according to NASA.

"Using rockets to hit the moon is worth drawing on" ——— aerospace expert Professor Zhao Jincai

China Institute of Astronautics Deep Space Exploration Professional Committee member, the Shanghai Institute of Astronautics expert Professor Zhao Jincai pointed out, this NASA action is a bright spot: they use the big quality, high-speed satellite booster rockets to hit the moon, to achieve a multiplier effect, this program is worthy of our reference. If we can find the water ice on the moon, it is of great significance to the lunar exploration. Because only with water, the moon can become a more qualified "deep space exploration base."

The detectors that hit the moon in recent years

1999 U.S. "Lunar explorer" NASA launched a "Lunar explorer" probe in 1998 to further search for evidence of the existence of water ice in the Antarctic region of the moon. Unfortunately, the "Lunar explorer" collision did not appear in the expected moisture cloud, the detection equipment has not detected any information about water.

2006 Europe "Smart 1th" September 3, 2006, the European Space agency lunar probe "smart 1th" successfully hit the moon, to the moon "gentle blow" ended nearly 3 years of space travel, played a new round of human exploration of the climax of the Prelude.

India "Lunar Ship No. 1th", November 14, 2008, in Flight 38. 60,000 kilometers later, the Indian lunar probe "lunar ship 1th" carried a heavy 29 kilograms of lunar impact detector successfully hit the moon.

2009 "Chang ' an" March 1, 2009, under the precise control of scientific and technological personnel, China's "Chang ' an" satellite accurately landed in the moon longitude 52. 36 degrees, south latitude 1. A 50-degree predetermined impact point to successfully complete a hard landing.

Is it stupid for US satellites to hit the moon? Very violent? Destructive?

Answer: http://discover.news.163.com/09/0921/08/5JNJKN0M000125LI.html

2009-10-10

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US satellite hits lunar test for water cost $ more than 70 million