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: To Bennu and Back

NASA's OSIRIS-REx spacecraft is scheduled to launch on a mission to orbit, map and collect samples from the asteroid Bennu, and return to Earth 7 years later. OSIRIS-REx: http://www.asteroidmission.org/ Visit http://science.nasa.gov/ for more Click here to see more videos: https://alugha.com/NASA

NASA ScienceCasts: Thinking Inside the Box

Gloveboxes on the ISS allow for experiments on materials that you wouldn't want escaping into the station's enclosed space. ISS Science: http://www.nasa.gov/iss-science NASA Science: http://science.nasa.gov/ Click here to see more videos: https://alugha.com/NASA

ScienceCasts: The Power of Light

A new NASA study is investigating how different light spectra can be used to effect astronauts' sleep, or lack of sleep. NASA Science: http://science.nasa.gov/ International Space Station: http://www.nasa.gov/station Click here to see more videos: https://alugha.com/NASA