Shergotty meteorite

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Shergotty meteorite
Shergotty meteorite.jpg
Image of the meteorite.
Type Achondrite
Class Martian meteorite
Group Shergottite
Parent body Mars
Country India
Region Shergotty, Gaya district, Bihar
Fall date 1865-08-24
TKW 5-kilogram (11 lb)

The Shergotty meteorite is the first example of the shergottite Mars meteorite family. It was a 5-kilogram (11 lb) Martian meteorite which fell to Earth at Shergotty (now Sherghati), in the Gaya district, Bihar, India on 25 August 1865, and was retrieved by witnesses almost immediately.[1] This meteorite is relatively young; radiometric dating indicates that it solidified from a volcanic magma about 4.1 billion years ago.[2] It is composed mostly of pyroxene and is thought to have undergone preterrestrial aqueous alteration for several centuries. Certain features within its interior are suggestive of being remnants of biofilm and their associated microbial communities.[3]

See also[edit]

References[edit]

  1. ^ Baalke, Ron. "Shergotty Meteorite". JPL. NASA. 
  2. ^ Bouvier, A.; et al. (2009). "Martian meteorite chronology and the evolution of the interior of Mars.". Earth and Planetary Science Letters 280: 285–295. Bibcode:2009E&PSL.280..285B. doi:10.1016/j.epsl.2009.01.042. 
  3. ^ Gibson Jr., E. K.; Westall, F.; McKay, D. S.; Thomas-Keprta, K.; Wentworth, S.; Romanek, C. S. "Evidence for ancient Martian life" (PDF). Johnson Space Center,. Houston Texas: NASA. 

Coordinates: 24°34′26.32″N 84°47′35.4″E / 24.5739778°N 84.793167°E / 24.5739778; 84.793167