- Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC
- As recently as July 23, 2002, Hurricane Douglas was a category 2 hurricane, with winds as high as 90 knots (over 100 miles per hour). As of July 24, Douglas had dropped back to category 1 status as it moved away from the Baja California Peninsula in the eastern Pacific Ocean. The storm is predicted to continue moving westward over the next 24 hours and should weaken as it moves over cooler waters. This image was acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra satellite on July 23, 2002.
- Plutonium (Wikipedia)
Plutonium is a chemical element; it has symbol Pu and atomic number 94. It is a silvery-gray actinide metal that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states. It reacts with carbon, halogens, nitrogen, silicon, and hydrogen. When exposed to moist air, it forms oxides and hydrides that can expand the sample up to 70% in volume, which in turn flake off as a powder that is pyrophoric. It is radioactive and can accumulate in bones, which makes the handling of plutonium dangerous.
