Asteroids, Comets, and Meteoroids - PowerPoint PPT Presentation

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Asteroids, Comets, and Meteoroids

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Lesson 4 Asteroids, Comets, and Meteoroids Asteroids Asteroids are rocky objects. Smaller than a planet. Found between Mars and Jupiter Weak Gravity No atmosphere ... – PowerPoint PPT presentation

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Title: Asteroids, Comets, and Meteoroids


1
Lesson 4
  • Asteroids, Comets, and Meteoroids

2
Asteroids
  • Asteroids are rocky objects.
  • Smaller than a planet.
  • Found between Mars and Jupiter
  • Weak Gravity
  • No atmosphere
  • Lots of craters!

3
Comets
  • A comet is a small, icy body in orbit around the
    Sun.
  • Their orbits are highly elliptical.
  • They travel to the Sun and well beyond Pluto.
  • May have been leftovers from Solar System.

4
Parts of a comet
  • Tail points away from the Sun.
  • Coma point towards the Sun.

5
Comet Animation
6
Deep Impact
  • On July 4, 2005, the Deep Impact spacecraft
    launched a small probe on a collision course with
    compete Temple-1.
  • It recorded clear images of the compete.
  • Even comets are covered with craters.

7
Halleys Comet
  • Halleys Comet period of 76 years.
  • Last seen in 1986. Next viewing 2062.

8
Kuiper Belt Oort Cloud
  • Short period comets come from the Kuiper Belt.
  • Long period comets come from the Oort Cloud

9
Meteoroids
  • Meteors travel though space.
  • Meteoroids are solid, particles passing meteors
    that pass through Earths atmosphere. (Shooting
    Stars)
  • Meteorites are meteoroids that hits Earth.
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