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National Aeronautics and Space Administration, Hampton, VA. Langley Research Center. – 2003
The tree house detectives go galactic with their latest project by traveling to Mars and also seeing how the Moon affects the Earth. They visit the largest radio telescope in the world and help look for intelligent life in the universe. The tree house detectives prepare for an out-of-this-world vacation as they explore the future of space travel.…
Descriptors: Earth Science, Elementary Education, Middle Schools, Problem Solving
Peer reviewedVillard, Ray – Mercury, 1990
Presented is the best understanding of the flaw discovered in the optics of the Hubble Space Telescope and the possible solutions to the problems. The spherical aberration in the telescope's mirror and its effect on the quality of the telescope's imaging ability is discussed. (CW)
Descriptors: Astronomy, College Science, Earth Science, Higher Education
