Latest News:  
Beijing   Overcast/Cloudy    26 / 18   City Forecast

Home>>Science & Education

NASA to launch twin probes to measure moon gravity

(Xinhua)

14:52, September 07, 2011

NASA will launch on Thursday twin lunar orbiters built to map the gravity of Earth's moon in unprecedented detail, media reported Tuesday.

The twin lunar probes, Graili-A and Graili-B, will blast off from Florida's Cape Canaveral Air Force Station at 8:37 a.m. EDT and at 9:16 a.m. EDT respectively Thursday, according to NASA.

The Grail twins will travel three to four months to get to the moon under a slower but more economical plan.

The two spacecrafts will reach the moon around New Year's Day when they will begin to probe the moon's composition from the crust to the core, according to NASA.

The data collected by the probes will be used to better understand the moon's evolution and formation, NASA scientists said.

Researchers will also use the twin probes to pinpoint the best landing sites for future explorations.

The mission, from start to finish, costs $496 million. The two Grail probes will crash into the moon after its mission.

Email|Print|Comments(Editor:梁军)

Leave your comment0 comments

  1. Name

  

Selections for you


  1. Conjoined twins recovering after 6-hr surgery

  2. Continuous rainfall triggers flood in Luanchuan

  3. 6 dead in military truck crash with car, truck in Mexico

  4. Say cheese!

Most Popular

Opinions

  1. S. Korea turns tourist resort into naval base
  2. China committed to peace and growth
  3. WTO ruling subtle support of protectionism
  4. Let them eat cake, after tax
  5. No end in sight for crisis of Western capitalism
  6. Top leaders work their way from grass roots
  7. US harms self, others with trade protectionism
  8. US dollar depreciation will not fix debt dilemma
  9. New-edition humanitarian intervention
  10. Knowledge no longer power for rural poor

What's happening in China

Conjoined twins recovering after 6-hr surgery

  1. Former security guard enters college
  2. Cow memorial video churns online
  3. Tomb raiders remain a menace
  4. Wal-Mart apologizes for new customer fraud
  5. Shanghai blaze victims in plea over donations

PD Online Data

  1. Aites of the Kazak
  2. Dongba Art of Naxi
  3. Fish-skin Clothes of Hezhe
  4. The Mongolian-style Lele Cart
  5. Ballad of Liu Sanjie