Siddharth Patel, a 12-year-old who lives in London, Ontario (west of Toronto), spotted two possible asteroids in September as ...

The asteroid isn’t a second moon, instead it is a quasi-satellite that is trailing the Earth’s orbit around the sun. Unlike ...

The asteroid is projected to come within 865,000 miles of Earth—nearly five times closer than the orbit of the moon.

If such ‘twilight’ asteroids approach Earth, "they could pose serious impact hazards," warned the astronomer behind the ...

The little space rock, called 2025 TF, safely passed within roughly 250 miles (400 km) of our planet on Tuesday (Sept. 30) at ...

Earth just got a new tag-along in space — a little asteroid named 2025 PN7. NASA confirmed this week that the rock, ...

Astronomers are closely observing the interstellar comet 3I/ATLAS. This comet is not a threat to Earth. Its study will help ...

Comet C/2025 A6 (Lemmon) was discovered early this year by one of the telescopes on — you guessed it — Mount Lemmon, where ...

NASA's Voyager 2 spacecraft captured dark streaks produced by geysers visible on the icy surface of Triton's south polar ...