Astronomers find asteroid with 1% chance of hitting Earth

BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.
A NASA spacecraft has returned asteroid samples that hold not only the pristine building blocks for life but also the salty ...
YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a ...