The rocks and dust collected from asteroid Bennu hold amino acids, ammonia and other molecules essential to life on Earth, NASA reported Wednesday. The findings suggest the conditions necessary for ...
The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...
An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...
BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.