Widespread Evidence

  • Brian Cudnik
Part of the Astronomers' Observing Guides book series (OBSERVING)


Before we discuss the impacts of lunar meteoroid and the ways to observe them, we will look at the impacts of meteoroid from a historical perspective. More specifically, we consider the impact evidence in the form of meteoroid and asteroid scars or craters that dot the surfaces of most worlds with solid surfaces. While investigating the formation of Solar System and history, we see evidences of how it came into existence: from the Sun itself to the most distant comet, we see signs that give us clues to the story of the beginning of the Solar System (Figure 1.1 shows an artist's impression as an impact that may have occurred 65 million years ago). We see obvious patterns in the Solar System including the fact that all eight major planets orbit close to a common plane and in the same direction. Most of the planets rotate in the same direction as they orbit, and the planes of their equators are fairly close to the planes of their orbits. Their satellites orbit in the same plane as the equator of their host planet.


Solar System Lunar Surface Impact Crater Solar Nebula Kuiper Belt 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    Spray JG (2005) Earth Impact Database, Planetary and Space Science Center, Univ. of New Brunswick,

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Brian Cudnik
    • 1
  1. 1.HoustonUSA

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