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Soubor:Chicxulub2.jpg - Wikipedie, otevřená encyklopedie

Soubor:Chicxulub2.jpg

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Chicxulub2.jpg (rozměr: 688 × 592 pixelů • velikost souboru: 384 kB • MIME typ: image/jpeg)


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Contents

[edit] Summary

Computer generated gravity map image of the Chixulub Crater in Mexico.

[edit] Source

http://solarsystem.nasa.gov/

[edit] Original caption

This is a computer-generated gravity map image of the Chicxulub Crater found on Mexico's Yucatan Peninsula. The buried impact structure has been implicated in the mass extinction of life 65 million years ago and may be much larger than scientists first suspected.

New analyses of gravity measurements in the region have turned up evidence that the feature is a multiring basin with a fourth, outer ring about 300 kilometers in diameter. At this diameter, the Chixulub Basin represents one of the largest collisions in the inner solar system since the so-called "heavy bombardment" ended almost four billion years ago. (The period of heavy bombardment was caused by the impact of debris from the early formation of the solar system raining in on the newly formed planets.) The only comparable post-bombardment basin is the 280-kilometer-diameter Mead Basin on Venus.

[edit] Licensing

Public domain This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).

Warnings:

  • Use of NASA logos (which include the current "meatball" logo, the old "worm" logo, and the seal) is restricted.
  • Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI. [1]
  • All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use. [2]
  • Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]

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