NASA’s LRO reveals “turbulent youth” of the Moon

.

NASA’s LRO reveals “turbulent youth” of the Moon

Putting together the Moon’s “detailed global topographic map” captured by the Lunar Reconnaissance Orbiter (LRO), NASA has come to the conclusion that the satellite had a “turbulent youth” – a period when it was battered by “two distinct populations of asteroids or comets.”

An analysis of the images captured by LRO’s Lunar Orbiter Laser Altimeter (LOLA) indicates that the Moon’s surface underwent an early large-fragment bombardment, after which relatively small objects assailed the satellite.

Noting that the analysis includes the Moon’s view “from the vantage point of the eastern limb,” James Head of Brown University said in that most recent edition of Science: “Our new LRO LOLA dataset shows that the older highland impactor population can be clearly distinguished from the younger population in the lunar 'maria' - giant impact basins filled with solidified lava flows.”

Head further elaborated that since the highlands have a comparatively greater density of large craters vis-à-vis the smaller ones, it is apparent that the initial population of impactors probably had a much greater number of large fragments in proportion to the population that characterized the Moon’s history later on.

Noting that crater-gazing may play a significant role in studies about the Earth having suffered at the hands of comets and asteroids, the analysis unfolds evidence of the pounding of the lunar surface, including the “110-mile-diameter, partially buried crater at Chicxulub, in the Yucatan Peninsula of Mexico”, which was a consequence of a significant thump 65 million years back!


Latest News

Wal-Mart’s New Fix-it Man Has Never Worked in U.S Before
Obama Steps Up Drive to Stop Tax Loopholes for  “Corporate Deserters”
Widening Quarterly Losses Pull Down Amazon Shares
New Zealand Once Again Raises Its Interest Rate Now to 3.5 Percent
UN Human Development Report Points at Inequality for Slow Progress
Facebook Perched to Reach a Record High After Heavy Quarterly Gains
July HSBC Survey Reveal China PMI at All Time High in 18-months
A Woman for the First Time to Join Board of American Apparel
Glaciers Melt near Lahaul, Spiti Make Officials Warn about Flooding
A.H. Belo Corp. Will Sell Providence Journal Newspaper to New Media
Comcast’s Second Quarter Earnings Increase as a Result of Added Internet Custome
Sugar tax Make it to San Francisco Ballot in a 6-4 Vote