Join Donate

Search Results


Displaying results 11 - 20 of 95 items found.

Previous 1 2 3 4 5 6 7 8 9 10 Next

11. Map of the Moon's crustal thickness inferred from GRAIL gravity data

(Web Page; Thu Jan 10 17:40:00 CST 2019)

Description: This map of lunar crustal thickness was derived from an analysis of GRAIL's gravity data. The thickness varies from a high of 60 kilometers in the farside highlands to a low near zero within impact basins. In some of the basins, the crust really may have zero thickness, meaning that mantle material is exposed at the surface. These include Crisium on the nearside (the rightmost of the three northern round basins) and Moscoviense on the farside (just northwest of the center of the globe), as well as a couple of small craters within the south pole-Aitken basin on the farside. Purple stars denote locations where the Kaguya orbiter saw olivine, a mantle mineral, exposed at the surface. Note that they cluster near Moscoviense, Crisium, and those small craters.

12. The Moon's farside from Ebb's MoonKAM

(Web Page; Thu Jan 10 17:48:00 CST 2019)

13. GRAIL, the next Discovery mission

(Web Page; Mon Apr 23 02:02:00 CDT 2012)

As a surprising number of you have written in to remind me, I've neglected to mention a big announcement made last month, that the next Discovery mission, to be launched in 2011, will go to the Moon. The mission is called GRAIL, which i...

Description: GRAIL, the next Discovery mission

14. Rollback on the final Delta 2 bearing GRAIL

(Web Page; Thu Jan 10 17:47:00 CST 2019)

Description: A Delta 2 rocket, the last one planned to launch from Cape Canaveral and next-to-last planned Delta 2 as of this launch, will send NASA's twin GRAIL spacecraft on a mission to orbit the moon. The rocket is in the Heavy configuration with slightly larger solid rocket boosters than a normal Delta 2, for the sixth time. In this time-lapse photo, taken in the late evening of September 7, 2011, The Mobile Service Tower at Complex 17 Pad B rolls back from the rocket.

15. GRAIL A and B are on their way to the Moon!

(Web Page; Fri Feb 07 14:30:00 CST 2014)

After some exasperating delays due to pesky and changeable high-level winds, the twin GRAIL spacecraft launched this morning on their trip to the Moon. Official launch time was 13:08:52.775 UTC on September 10, 2011. Go GRAIL! About...

Description: After some exasperating delays due to pesky and changeable high-level winds, the twin GRAIL spacecraft launched this morning on their trip to the Moon.

16. Pretty picture: Talking to GRAIL

(Web Page; Fri Feb 07 14:36:00 CST 2014)

A lovely picture from the Canberra DSN this morning, showing two of the workhorse 34-meter antennas communicating with the nearby GRAIL spacecraft. In the distance, the huge DSS-43 talks to the solar observatory STEREO-B.

Description: Here's a lovely picture from the Canberra DSN this morning, showing two of the workhorse 34-meter antennas communicating with the nearby GRAIL spacecraft. In the distance, the huge DSS-43 talks to the solar observatory STEREO-B.

17. GRAIL update: Next launch attempt planned for Saturday

(Web Page; Fri Feb 07 13:31:00 CST 2014)

Just a brief update: SpaceflightNow reports no attempt will be made to launch GRAIL tomorrow. The next launch opportunity is Saturday. "Two one-second opportunities will be available, the first at 8:29:45 a.m. and the second at 9:08:52 a...

Description: Just a brief update: SpaceflightNow reports no attempt will be made to launch GRAIL tomorrow. The next launch opportunity is Saturday.

18. How to watch the GRAIL launch on Thursday

(Web Page; Fri Feb 07 13:11:00 CST 2014)

The twin spacecraft of the GRAIL lunar gravity mission are set to launch side-by-side on a Delta II rocket on Thursday, September 8. The launch may happen on the 8th in either of two instantaneous launch windows at 5:37 or 6:16 Pacific (...

Description: The twin spacecraft of the GRAIL lunar gravity mission are set to launch side-by-side on a Delta II rocket on Thursday, September 8. Here's all the places where you can find information about the upcoming launch.

19. Here we go again: GRAIL set to launch today

(Web Page; Fri Feb 07 14:16:00 CST 2014)

GRAIL is trying for launch today at 8:29 PDT / 12:29 UT or 9:08 PDT / 6:08 UT., and here I am at 5:00 am my time ready to watch. As before, I'm watching the feed through Spaceflight Now's GRAIL mission status center. Another good place t...

Description: GRAIL is trying for launch today at 8:29 PDT / 12:29 UT or 9:08 PDT / 6:08 UT., and here I am at 5:00 am my time ready to watch. As before, I'm watching the feed through Spaceflight Now's GRAIL mission status center.

20. Geek craft: GRAIL twins Ebb and Flow in plastic canvas

(Web Page; Tue Jul 29 13:34:00 CDT 2014)

Those of you who follow me on Twitter know that after beginning with Dawn last week, I've kept my fingers busy, stitching more spacecraft from plastic canvas. I now have prototypes for GRAIL, New Horizons, and MESSENGER (though I'm not c...

Description: Those of you who follow me on Twitter know that after beginning with Dawn last week, I've kept my fingers busy, stitching more spacecraft from plastic canvas. I now have prototypes for GRAIL, New Horizons, and MESSENGER.

Previous 1 2 3 4 5 6 7 8 9 10 Next