Learn about Earth's close encounter with asteroid 2012 DA14 on February 15, 2013, in this video from NASA. Asteroid 2012 DA14 passed safely about 17,000 miles (27,000 kilometers) from Earth's surface. Its orbit was well known and scientists were not worried about a possible collision. NASA observes and tracks near-Earth objects to look for impact threats and carry out scientific study. In the future, near-Earth objects could be used as sources of raw materials. The largest impact event on Earth in recorded history occurred in 1908 in Tunguska, Russia, when an object about the size of 2012 DA14 exploded in the atmosphere. 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/npls13.sci.ess.eiu.asteroid/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-section-3c-of-terms-of-use-download-and-share/
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Satellite Based Flood Monitoring Central to Relief Agencies Disaster Response: http://www.nasa.gov/feature/goddard/satellite-based-flood-monitoring-central-to-relief-agencies-disaster-response Visit http://science.nasa.gov/ for more. To download this episode, go to http://sciencecasts.nasa.gov/ Pr
The common roundworm shares a surprising amount of genetic material with humans - enough, in fact, to make them the good substitutes for astronauts in low-gravity medical studies. Visit http://science.nasa.gov/ for more. More on Space Aging! http://www.nasa.gov/mission_pages/station/research/news/
This week, Earth passes through a stream of debris from Comet Swift-Tuttle, source of the annual Perseid meteor shower. Forecasters say the show could be especially good this year because the Moon is nearly new when the shower peaks on Aug. 12-13. Visit http://science.nasa.gov/ for more. Click her
