Osiris-Rex: Asteroid Bennu 'is a journey back to our origins'
Osiris-Rex: Asteroid Bennu 'is a journey back to our origins' Nasa's Osiris-Rex capsule will come screaming into Earth's atmosphere on Sunday at more than 15 times the speed of a rifle bullet. It will make a fireball in the sky as it does so, but a heat shield and parachutes will slow the descent and bring it into a gentle touchdown in Utah's West Desert.asteroidsampleLINK