• Question: how long did the world take to form?

    Asked by abys532pact4 on 10 Oct 2025.
    • Photo: David Taylor

      David Taylor answered on 10 Oct 2025:

      Great question. The Earth is only a little bit younger than the sun (both formed about 4.5 billion years ago). When a star is forming it collects material from a disc around it, and planets form from that disc. We know that exoplanets must take around 30 million years to form (since these discs only live for around that time), so I’d say the Earth will have taken about that time to form.

    • Photo: Emily Walls

      Emily Walls answered on 10 Oct 2025:

      I believe that Earth formed around 4.5 billion years ago, it was formed using left over resources from the production of the Sun!

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