Observatoire des droits humains (anglais seulement)

In what order did the planets in our solar system form?

(Version anglaise seulement)

par Christopher Palma, Teaching Professor of Astronomy & Astrophysics, Penn State
Lucas Brefka, Ph.D. Student in Astronomy & Astrophysics, Penn State

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com.

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 our…

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