XR flew about 1.37 million miles (2.2M km) away from Earth. The space rock is estimated to be about 300-700 km (248-434 miles ...
YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a ...
A recently released animation shows a new look at a large asteroid that has a small, but significant chance of impacting ...
In a rare "time-critical" decision, the James Webb Space Telescope will study the true size of the "potentially hazardous" ...