Planet movement

  • Thread starter mikejr82
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  • #1
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Main Question or Discussion Point

Just a quick question
Are the planets totaly locked in there orbits forever or do they slowly get drawn in closer to the sun?either by the sun's gravitational pull or simply by the sun expanding?
Thanks in advance for any replys
mike
 

Answers and Replies

  • #2
Janus
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Given that the Sun is slowly losing mass as it burns it fuel, the planets will slowly move away from the Sun.
In a few billion years the Sun will then expand into a red giant, engulfing the inner planets.
 

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