Photo Agency - Astronomy - Space - Nature
> The Lunar Ejecta and Meteorite (LEAM) experiment-Apollo 17
The Lunar Ejecta and Meteorite (LEAM) experiment-Apollo 17
author: Nasa/Novapix
reference: e-apo17-30004
Image Size 300 DPI: 25 * 25 cm
The Lunar Ejecta and Meteorite (LEAM) instrument as deployed at the Apollo 17 ALSEP site. The central station is directly behind it, the RTG to the right of that, and the Lunar Surface Gravimeter (LSG) to the left of the central station. Discarded pallets and trash are also visible. The North Massif dominates the right side of the picture. The objectives of the LEAM experiment were to detect secondary particles that had been ejected by meteorite impacts on the lunar surface and to detect primary micrometeorites themselves. The 3 classes of particles encountered by the LEAM included lunar ejecta, interstellar grains, and cometary debris, all of which can be considered under the title of cosmic dust. The experiment measures particle speed, radiant direction, particle momentum, and particle kinetic energy. The particle detectors of the instrument were multi-layered arrays that were capable of measuring the velocity and energy of incident particles. It consisted of 3 sensors - East, West, and Up. It stood on 4 legs and was connected to the ALSEP central station by a cable. 11 Dec. 1972.
Contact : Stéphane Aubin +33-(0)9-51-26-53-76
© Novapix - All rights reserved