SpaceMoon’s explosive birth drove iron deep into Earth's core Our moon was made by the Big Splash, an impact that we thought left iron deposits near Earth’s crust. It turns out that the metal sank into our planet’s core News
SpaceTethered satellites could see the moon’s weird swirls up close The moon has bright coils of dust we can’t study without getting up close. A NASA proposal would send two satellites tied together to dangle over the surface News