A new study has challenged a popular explanation for the unexpected 30-second shortening of Dimorphos’s orbital period. The researchers found that the proposed mechanism would actually produce the opposite effect, given the gravitational dynamics of the small moon. The paper has been accepted for publication in Astronomy & Astrophysics and is currently available on the arXiv preprint server.
New study rules out binary hardening as cause of Dimorphos’s orbital period drop
