Space Rock Census

In "Space Rock Census" Amy Mainzer, principal investigator for the Wide-field Infrared Survey Explorer (WISE) mission, reveals some new observations about space rocks in our solar system in these videos from NASA Jet Propulsion Laboratory. The WISE mission is helping scientists understand the true number, sizes, locations, and physical make-up of asteroids and comets. In the second video, learn about observations by WISE that show there are significantly fewer near-Earth asteroids in the mid-size range than previously thought. This video is available in both English and Spanish audio, along with corresponding closed captions. This resource is part of the NASA Planetary Sciences Collection. CREDITS: https://www.pbslearningmedia.org/credits/npls12.sci.ess.eiu.spacerocks/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-section-3c-of-terms-of-use-download-and-share/

LicenseCustom License

More videos by this producer

ScienceCasts: Ocean Worlds

Visit http://science.nasa.gov/ for more. We once thought oceans made our planet unique, but we’re now coming to realize that ‘ocean worlds’ are all around us. Click here to see more videos: https://alugha.com/NASA

ScienceCasts: Planetary Defense

NASA's Planetary Defense Coordination Office is working to keep Earth safe from asteroids and other hazards that come from deep space. Visit http://science.nasa.gov/ for more. NASA Planetary Defense: http://www.nasa.gov/planetarydefense Click here to see more videos: https://alugha.com/NASA