A NASA planetary defense officer warns thousands of near-Earth asteroids capable of destroying a city remain undetected.

An asteroid the size of a building could collide with the Moon in 2032 and generate a flash visible from Earth.

She’s worried about the a-rock-alypse. A planetary defense expert is warning that humanity is defenseless against up to 15,000 undetected near-Earth asteroids that have the potential to take out a ...

The object is hurtling towards the Earth at a zippy 12,616 miles per hour, according to data from the space agency.

The discovery is just the latest to come from the asteroid sample, which dates back to the dawn of the solar system.

“What keeps me up at night is the asteroids we don’t know about," said NASA's planetary defense chief.

It was likely debris from Kosmos 482 — a Soviet spacecraft launched in 1972 as part of a mission to Venus. The launch failed.

NASA's head of planetary defence, Dr Kelly Fast, has issued an unsettling update on thousands of ‘city-killer’ asteroids that could hit Earth.

Tiny grains of dust from asteroid Bennu are reshaping how scientists think life’s ingredients formed in space.

A study found that these cosmic bodies appear to hold up remarkably well to sudden energy deposition and shock conditions, so we may be able to knock them off course and avoid disaster.

Dust from asteroid Bennu is revealing a surprising origin story for life’s building blocks. New research suggests some amino acids formed in frozen ice exposed to radiation, not warm liquid water as ...