Tonight's Sky
Sun
Sun
Moon
Moon
Mercury
Mercury
Venus
Venus
Mars
Mars
Jupiter
Jupiter
Saturn
Saturn

Tonight's Sky — Change location

OR

Searching...

Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '

Defending Earth from Asteroids

Finding and tracking near-Earth objects.

Asteroids_Cover_768x1001

Asteroids offer clues to the earliest days of our solar system, as well as the promise of valuable minerals and precious resources. Assuming they don’t kill us first. Find out how we are spotting asteroids and discovering their secrets.

Provide your email address for instant access!

By signing up you may also receive newsletters and special offers from Astronomy Magazine. View our privacy policy.
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. View our Privacy Policy.

ADVERTISEMENT
ADVERTISEMENT
Asteroids_medrec_300x250

How we find, track, and discover near-Earth asteroids. 

Find us on Facebook