Effective fire-resistant fuels used by the military have proven too costly for commercial use. Space Shuttle Atlantis, carrying components for the International Space Station, from the Kennedy Space Center in Florida. U.S. Air Force Navstar 2R-4 satellite, part of the Global Positioning System, on a Delta II rocket from Cape Canaveral, Florida. Ocean Drilling Program scientists collect sediment samples near Antarctica. Marine biologists from the Undersea Explorer program dive near Australia's Osprey Reef to study sharks.
Small drops are roughly spherical because they are held together by surface tension.
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