Quantcast

Latest Troctolite Stories

ff9fb632c40defc63c3152ece7c0b9a11
2009-01-20 13:40:00

A small, 4.2 billion-year-old moon rock collected by an astronaut during Apollo 17, the last manned mission to the Moon, provides evidence that the Moon once had a molten core that generated a magnetic field. Harrison Schmitt, Apollo 17's only trained geologist, gathered the rock, known as troctolite 76535, in 1972. Troctolite is a type of rock consisting of the minerals olivine and plagioclase. Considering that lava plains on the Moon's surface suggest a volcanic past that may have lasted...


Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
Related