Feeds

CRACK made by quakes FOUND ON MOON

Paparazzo probe's pic hints at smoking hot insides

SANS - Survey on application security programs

NASA's Lunar Reconnaissance Orbiter (LRO) has snapped shots showing that the Moon's crust has been stretched and pulled fairly recently to form tiny valleys on its surfaces.

Recent valleys on the Moon's surface

Recent valleys on the Moon's surface. Credit: NASA/Goddard/Arizona State University/Smithsonian Institution

The moonquakes occurred some time in the last 50 million years, which in Moon time is pretty recent since the rock is over 4.5 billion years old.

The valleys, known as graben, are narrow cracks on the surface that show the lunar crust is being pulled apart along two bounding faults.

"We think the Moon is in a general state of global contraction because of cooling of a still hot interior," said Thomas Watters, lead author of a paper on this research appearing in the journal Nature Geoscience.

"The graben tell us forces acting to shrink the moon were overcome in places by forces acting to pull it apart. This means the contractional forces shrinking the moon cannot be large, or the small graben might never form."

Formation of Moon valleys

The findings raise questions about how the Moon evolved and whether or not it is still in the process of completely forming.

Scientists had assumed that the Moon was all done with tectonic activity, because the youngest geological markers on the surface were thought to be about a billion years old.

The graben show that the interior of the Moon could still be smoking hot and molten. If the core was cooling, the surface of the Moon would be wrinkling up, not cracking to form valleys.

"It was a big surprise when I spotted graben in the far side highlands," said co-author Mark Robinson, principal investigator of LROC.

"It's exciting when you discover something totally unexpected and only about half the lunar surface has been imaged in high resolution. There is much more of the Moon to be explored." ®

Top three mobile application threats

More from The Register

next story
Red-faced LOHAN team 'fesses up in blown SPEARS fuse fiasco
Standing in the corner, big pointy 'D' hats
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
Fancy joining Reg hack on quid-a-day challenge?
Recruiting now for charity starvation diet
LOHAN's Punch and Judy show relaunches Thursday
Weather looking good for second pop at test flights
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
Curiosity finds not-very-Australian-shaped rock on Mars
File under 'messianic pastries' and move on, people
Elon Musk's LEAKY THRUSTER gas stalls Space Station supply run
Helium seeps from Falcon 9 first stage, delays new legs for NASA robonaut
Top Secret US payload launched into space successfully
Clandestine NRO spacecraft sets off on its unknown mission
prev story

Whitepapers

Designing a defence for mobile apps
In this whitepaper learn the various considerations for defending mobile applications; from the mobile application architecture itself to the myriad testing technologies needed to properly assess mobile applications risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.