Explanation: In 1996, scientists melted a hole in the bottom of the world. In fact, several holes have been melted near the South Pole, and they are now being used as astronomical observatories. Astronomers with the Antarctic Muon and Neutrino Detector Array (AMANDA) lower into each vertical lake a string knotted with basketball-sized light detectors. The water in each hole soon refroze. The detectors are sensitive to blue light emitted in the surrounding clear ice. Such light is expected from ice collisions with high-energy neutrinos emitted by objects or explosions out in the universe. The above picture was taken 750 meters below the surface looking down into the abyss. Instruments were lowered down past 2000 meters. Data from AMANDA is already being collected and analyzed.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: ice - Antarctica - neutrino - neitrino Publikacii so slovami: ice - Antarctica - neutrino - neitrino
Sm. takzhe: Polnoe zatmenie na krayu sveta Yuzhnyi polyus malen'koi planety Neitrino, svyazannye s dzhetom dalekogo blazara Vnutri detektora antineitrino v Daiya Bei Podo l'dom Antarktidy obnaruzheny neitrino, priletevshie izdaleka Mlechnyi Put' i polyarnoe siyanie nad Antarktikoi Polnoe solnechnoe zatmenie na krayu sveta Vse publikacii na tu zhe temu >>