NASA Planetary Scientist Noah Petro dishes on what it took plan the impressive touch-and-go return mission, why much of the ...

Asteroid 2025 TF's closest approach was about ~186 miles (300 km) from Earth. It is estimated to be about 2 meters (6.5 feet) ...

Astronomers have puzzled for years over a strange pattern in the outer solar system. A surprising number of icy bodies far beyond Neptune resemble snowmen, made of two rounded lobes stuck together.

Scientists classify asteroids measuring 140 metres or more as "city-killers" because of the scale of destruction they can unleash ...

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

In a stark and widely reported warning, NASA’s planetary defence chief has revealed that Earth currently has no reliable way to stop thousands of “cit.

NASA officials warn thousands of undetected “city killer” asteroids may be circling near Earth. With limited deflection tools ready, are we prepared if one suddenly shifts onto a collision course?

If the world exploded, what proportion of the rocks floating in space would have evidence of life? (continued) ...

NASA planetary defense experts warn that up to 15,000 undetected asteroids could devastate a major city on Earth.

While not an official term, "city-killing asteroids" refers to asteroids large enough to significantly damage cities if they ...

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