There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in ...

When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d like ...

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