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Asked by hermiony evie to Omur, Maddison, Jimi, Hayley, Chris on 11 Mar 2016.
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Hayley Moulding answered on 11 Mar 2016:
How planets change. Well, that is a very difficult question! Your questions are great! Real scientific stuff! The planets over time, evolve like us humans did and are doing now. That means that because there is a change in time as well as space, our planets in our galaxy over time have moved away from the centre of the galaxy (the Milky Way) and towards to ‘outer’ area of the galaxy. As well as planets, stars change and stars are formed everyday, it just takes a while for us to notice them in our sky!
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Chris Conselice answered on 11 Mar 2016:
Planets are forming in the galaxy all the time. They start life as either tiny rocks that smash together to get bigger rocks or they collapse from gas into a big warm cloud of gas. Over time they cool down and becomes planets.
After that, they pretty much settle down, and in principle do not change much anymore, and could survive forever. However, stars evolve and eventually become destroyed which means that planets also become destroyed by their host stars.
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Jimi Wills answered on 11 Mar 2016:
The are a number of way the planet change.
Each planet is orbiting a star. But the orbit can change very slowly over time, so that the planet gets closer to or further away from the star. This means the planet will get cooler or warmer. Also, stars change… size, temperature, etc, and this will affect the star’s planets.
Eventually some planets will escape their solar system and other will get swallowed up by their sun.
Many planets will also have the same kind of summer and winter that Earth has. Planets also rotate like Earth so they have day and night.
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Omur Tastan answered on 13 Mar 2016:
I guess every planet can change slightly over time and this depends on where they are in the galaxy and whether anyone is living on them 🙂 Like we changed Earth quite a bit 🙂
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