Saturn’s moon Iapetus has been bombarded pretty heavily by debris from the outer Solar System. But it’s not TOO smashed up — its strange, 20-km-high, equatorial ridge is still standing. The authors of this paper simulate the bombardment of Iapetus to figure out how much mass could have collided with the moon without destroying the ridge.
TITLE: Supernovae in the Central Parsec: A Mechanism for Producing Spatially Anisotropic Hypervelocity Stars AUTHORS: Kastytis Zubovas, Graham A. Wynn, Alessia Gualandris AUTHORS’ INSTITUTION: Theoretical Astrophysics Group, University of Leicester Hypervelocity Stars In 2005, Brown et al. discovered a star with a radial velocity of ~700 km/s, which is more than 3 times the Solar […]