NASA Tracking Bus-Size Asteroid Approaching Earth at 30,000 Mph
BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.
Meet NISAR: The Satellite That Will Watch Every Inch of Our Changing Planet
NISAR, an upcoming Earth satellite mission by NASA and ISRO, promises to revolutionize how we monitor Earth's surface. Using ...