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Latest Caleb Fassett Stories

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2010-06-24 08:35:00

Planetary scientists have uncovered telltale signs of water on Mars "” frozen and liquid "” in the earliest period of the Red Planet's history. A new claim, made public this month, is that a deep ocean covered some of the northern latitudes. But the evidence for water grows much more scant after the Noachian era, which ended 3.5 billion years ago. Now Brown University planetary geologists have documented running water that sprang from glaciers throughout the Martian middle...


Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.