Saturday, December 10, 2016
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Astronauts at risk from lunar 'shrapnel'


Posted on Monday, 24 March, 2014 | Comment icon 6 comments

Meteorite impacts could pose a significant risk to astronauts. Image Credit: NASA
Future astronauts landing on the Moon may be at risk from an entirely unexpected source of danger.
Undertaking a mission to land on the Moon can be a risky enough business at the best of times, but now scientists believe that anyone who visits the lunar surface in the future may be at risk from being struck by debris thrown up by small meteorite impacts.

With only one-sixth of the Earth's gravity and no air resistance, any impact on the surface of the Moon has the potential to send hundreds of debris pieces hurtling for miles at speeds similar to that of a blast from a shotgun.

Professor Mark Robinson and colleagues from Arizona State University used images from the Lunar Reconnaissance Orbiter to observe the spread of debris from known impact sites. In one example they found 248 smaller impacts from chunks of debris ejected by a meteorite that had struck the surface more than 30km away.

"Since they're spread out at great distances, we really need to start thinking that 'secondaries' from small craters pose possibly a larger risk to future long-lived surface assets than the actual primary craters themselves," he said.

"Even though 100m/s is low-velocity, you would certainly not want to be hit with material coming in at 100m/s. That's about the velocity of a shotgun blast."

Source: BBC News | Comments (6)

Tags: Moon, Astronauts


 
Recent comments on this story
Comment icon #1 Posted by Junior Chubb on 24 March, 2014, 11:40
Future astronauts landing on the Moon may be at risk from an entirely unexpected source of danger. ...and previous missions where not? Looks like we got lucky so far with the astronauts (maybe not with the equipment though).
Comment icon #2 Posted by Waspie_Dwarf on 24 March, 2014, 13:21
...and previous missions where not? Previous manned missions spent only hours on the Moon (75 hours for Apollo 17, the longest to date). In the future we will build bases there so quite obviously the risk will be considerably greater.
Comment icon #3 Posted by Junior Chubb on 24 March, 2014, 14:01
Previous manned missions spent only hours on the Moon (75 hours for Apollo 17, the longest to date). In the future we will build bases there so quite obviously the risk will be considerably greater. Best to say inside them then
Comment icon #4 Posted by paperdyer on 24 March, 2014, 16:30
Just wear your Kevlar undies
Comment icon #5 Posted by Ugly1 on 25 March, 2014, 2:48
This just in, Nasa has watched the movie Gravity starring Sandra Bullok and George Clooney.
Comment icon #6 Posted by :PsYKoTiC:BeHAvIoR: on 25 March, 2014, 11:54
No doubt this information will attract moon landing conspirators.


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

5827891
263618
164375

 
New Rendlesham UFO witness comes forward
12-9-2016
A former security police officer has described the object he witnessed that night as 'not of this world'.
Legendary astronaut John Glenn dies aged 95
12-9-2016
Glenn became a national hero back in 1962 when he became the first American ever to orbit the Earth.
Actual dinosaur tail found preserved in amber
12-8-2016
The unprecedented 99 million-year-old specimen contains preserved bones, soft tissues and feathers.
Mars One delays first manned mission to Mars
12-8-2016
The Netherlands-based firm has pushed back its ambitious plans by several years due to funding issues.
Featured book
 
By Toryn Chapman
Campbell Mackenzie is a successful lawyer with occasional feelings of déjà vu. There's just one problem, though - it's not déjà vu.
Featured Videos
Gallery icon 
Why do some coins have ridges ?
Posted 12-9-2016 | 2 comments
What is the purpose of the ridges found around the edges of some coins ?
 
Exploding 6ft water balloon in slow motion
Posted 12-8-2016 | 1 comment
The Slo Mo Guys film what happens when you sit inside a giant exploding water balloon.
 
What happens when you swallow gum ?
Posted 12-7-2016 | 3 comments
Ever swallowed a piece of chewing gum by accident ? Here's what happens.
 
 View: More videos
Stories & Experiences
Not my daughter
12-2-2016 | Kansas USA
 
Curious cat
12-2-2016 | Australia
 
My ball lightning story
11-12-2016 | Kane, PA
 
My doppelganger story
11-12-2016 | Levittown, PA
 
The same dream
11-12-2016 | Pennsylvania
 
Paranormal activity ?
11-4-2016 | England
 
ESP experiences
11-4-2016 | United States
 
Witnessing hyperspeed?
10-13-2016 | United States
 
Auntie doppelganger
10-13-2016 | United States
 
Men in Black encounters
10-13-2016 | Canada
 

         More stories | Send us your story
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com 2001-2015
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ