Space agencies have systems in place to spot, track, and forecast the future orbits of potentially hazardous asteroids.

But it seems that, no matter which party has control, planetary defense — even if it lingers deep in the background, behind ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

FILE - This May 18, 1969 photo provided by NASA shows Earth from 36,000 nautical miles away as photographed from the Apollo 10 spacecraft during its trans-lunar journey toward the moon.

Credit: Astronomy: Roen Kelly With no Moon in the evening sky, it’s time for us to track down fainter targets. Let’s start with asteroid 15 ... so-slowly against the background stars there.

Venus, Jupiter, and Mars dominate the sky. Catch your last views of Saturn as early in the month, the Moon passes in front of ...

Discovered by the Asteroid Terrestrial Impact Last Alert System (ATLAS ... accompanied by a tail roughly a half-degree in length (about equal to the apparent diameter of the moon). By then, however, ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

The object that struck the moon is estimated to have been about 15 miles (25 km) in diameter, larger than the asteroid that struck Earth 66 million years ago and doomed the dinosaurs. "When the ...

Delve in and read on to know the details! Billions of years ago, an asteroid or comet struck the Moon, creating two huge canyons in just minutes. This discovery has amazed scientists, showing how ...

A vast impact crater near the moon’s south pole was formed by an asteroid moving at more than a kilometre a second, releasing energy when it struck equivalent to 130 times that of all the ...