Herschel Spacecraft Won’t “Bomb” the Moon, But GRAIL Will

Artist concept of Ebb and Flow, the two GRAIL spacecraft in orbit of the Moon. Credit: NASA The Herschel space telescope is slated to be decommissioned next March as the observatory’s supply of cryogenic helium will be depleted. One idea for “disposing” of the spacecraft was to have it impact the Moon, a la the [...]