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With Explore the Planets, investigate the planets, their moons, and understand the processes that shape them. By G. Jeffrey Taylor, Ph.D. See our DVD collection.

David Leestma

David Leestma is an American astronaut who was born on May 6, 1949, in Michigan. Before he became an astronaut, Leestma was a Navy test pilot. He logged over 3000 hours of flight time.

Leestma became an astronaut in 1980. He has spent over 533 hours in space on three spaceflights.

Leestma made his first spaceflight aboard Mission 41-G in 1984. The crew spent eight days studying the Earth. In 1989, he flew aboard a Department of Defense mission. Leestma made his last flight aboard Spacelab ATLAS in 1992. The crew studied the Earth%s atmosphere.



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Our online store includes fun classroom activities for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist are also full of classroom activities on different topics in Earth and space science!

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Andrew Allen

Andrew Allen is an American astronaut who was born on August 4, 1955 in Pennsylvania. Before he became an astronauts, Allen was a Navy and Marines pilot. He has logged over 4500 flight hours on more than...more

Jay Apt

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Neil Armstrong

Neil Armstrong is an American astronaut who was born in Ohio in 1930. Before entering the space program, he was a pilot for the U.S. Navy and Air Force, flying over 200 different kinds of aircraft, such...more

Ellen Baker

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Michael Baker

Michael Baker is an American astronaut who was born on October 27, 1953 in Tennessee. Before he became an astronaut, Baker was a Navy pilot. He logged over 5000 hours of flight time aboard 50 different...more

John Blaha

John Blaha is an American astronaut who was born on August 26, 1942 in Texas. Before he became an astronaut, Blaha was an Air Force pilot. He has flown over 5500 hours in 33 different types of aircraft....more

Guion Bluford

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA