A swarm of giant city-killer asteroids hiding near Venus poses an “invisible threat” to life on Earth, astronomers have warned in a new study. These space rocks, known as co-orbital asteroids ...

Asteroids that can’t get any closer to our planet than one-twentieth of Earth’s distance from the sun are not considered to be potentially hazardous asteroids, according to NASA.

Five famous space rocks June 30 is International Asteroid Day. Read on to know more what asteroids are and which are the famous ones.

Space officials estimate the rock is about 220 feet across, making it larger than the Leaning Tower of Pisa at 185 feet. 2025 ...

Even though these asteroids are not an immediate threat, they are a blind spot in the study of near-Earth objects. Their size, proximity, and unpredictability qualify them for consideration not ...

A swarm of large asteroids likely lurking around Venus could one day pose an "invisible threat" to Earth if left unchecked, astronomers have warned in new research. The giant space rocks are ...

A team of students co-led by University of Arizona’s planetary science associate professor Vishnu Reddy is studying metal-rich near-Earth asteroids, or NEAs, to explore the possibility that iron ...

Those include active asteroids, which, at least temporarily, possess tails of gas and dust just like comets. Astronomers currently know of about 25 of them, Dr. Schwamb said.

Metallic asteroids are made up mostly of iron and nickel, and also contain platinum group metals, or PGMs for short. Similarly, carbonaceous asteroids are known to contain hydrated minerals.