• Question: If asteroid 99942 Apophis ever strikes Earth, how big would the crater be?

    Asked by anon-225816 to Sameed, Jose, joannabarstow, Heidi, Chris on 21 Nov 2019.
    • Photo: Joanna Barstow

      Joanna Barstow answered on 21 Nov 2019:

      Asteroid 99942 Apophis is around 370 m across. For impactors of this size, the crater size will be approximately 10x the impactor size, so around 3.7 km.

Comments