Did you ever wonder how NASA spots asteroids that maybe getting too close to Earth for comfort? Watch and learn. Find out more about NASA finds, studies and tracks near-Earth …

See thousands of asteroids and comets in real-time, see the next five close approaches to Earth, and explore past, present and future missions to asteroids and comets.

4 days ago · The Asteroid Watch dashboard tracks asteroids and comets that will make relatively close approaches to Earth. The dashboard displays the date of closest approach, approximate …

Dec 10, 2021 · Fully interactive, Eyes on Asteroids uses science data to help visualize asteroid and comet orbits around the Sun. Zoom in to travel along with your favorite spacecraft as they …

Watch this one-minute video to find out how NASA spots and tracks asteroids that fly close to Earth.

Jan 22, 2025 · Spacecraft and Earth-based observations monitor and track asteroids and comets, most of which are too small or too distant to pose any danger to us. Scientists do keep extra …

A measure of how infrequent the Earth close approach is for asteroids of the same size and larger: 0 means an average frequency of 100 per year, i.e., roughly every few days or less, 1 …

Sentry is a highly automated collision monitoring system that continually scans the most current asteroid catalog for possibilities of future impact with Earth over the next 100 years. Whenever …

Most orbit within the main asteroid belt, between the orbits of Mars and Jupiter, but some follow paths that circulate into the inner solar system (including near-Earth asteroids), while others …

Of all the asteroids observed by planetary radar, well over half were observed by the large 305-meter (1,000-foot) telescope at Arecibo Observatory in Puerto Rico before it was damaged …