The asteroid, known as 2022 RD2, belongs to a rare class of space rocks called Arjunas. These objects travel around the sun ...

Potential impactors are most likely to have low velocities and the highest likelihood of hitting Earth during the winter.

European Space Agency says milestone highlights both Earth’s vulnerability and advances in planetary-defense science - ...

Earth just had two close calls... and one went completely unnoticed. A small asteroid passed just 266 miles above Antarctica—closer than many satellites—before anyone even spotted it. Less than a day ...