Latest Sinus Meridiani Stories
Life may have had a tough time getting started in the ancient environment that left its mark in the Martian rock layers examined by NASA's Opportunity rover. Conditions in the Meridiani Planum region of Mars were strongly acidic, oxidizing, and sometimes wet.
While most planetary scientists believe water on Mars is the best clue to finding interesting rock samples, there are big questions that remain about where exactly that water may be found. New results give a short-list for some who track the water history on the red planet.
- In medieval musical notation, a sign or neume denoting a shake or trill.