Protoplanets And Planetesimals
Published on Nov 19, 2015
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PRESENTATION OUTLINE
PROTOPLANETS
THE PRE-PLANET STUFF
PROTOPLANETS
- Small celestial objects that form during solar system creation
- Could become a planet with time but most melt due to radioactivity, gravitational influences, and collisions
- Studied because they display solar system creation history
QUESTIONS
- Was Earth a protoplanet?
- Some astronomers believe Earth is currently the "new" formation by a protoplanet
- What is a protoplanet made of?
- A theroretical mass of gas and dust
4 VESTA
A SURVIVING PROTOPLANET
HOW THEY FORM
IMPACT THEORY
PLANETESIMALS
THE PLANET STUFF
PLANETESIMALS
- They are small objects that orbit around the sun and eventually collide
- With other planetesimals to form planets
- They exist in the earlier stages of solar system creation
- Earth is theorized to be formed by colliding planetesimals
