nasa:Happy 50th Anniversary of Earth Day! We’re so glad you could join us for this special Earth edi
nasa:Happy 50th Anniversary of Earth Day! We’re so glad you could join us for this special Earth edition of Tumblr Answer Time. Today is a perfect day to learn about our home planet directly from the people who work to keep it safe. Kick off starts NOW! Our Acting Director of Earth Sciences, Sandra Cauffman, and Associate Administrator for the Science Mission Directorate, Dr. Thomas Zurbuchen have answers to your questions from their homes! Enjoy. Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.Grand` -- source link