Jemison blasted into orbit aboard the space shuttle Endeavour on Sept. 12, 1992, the first woman of color to go into space. She was science mission specialist on a U.S.-Japan joint mission, and conducted experiments in life sciences and materials sciences. She also was co-investigator for a bone cell research project.
some magents can last for a 1000YEARS. meaning they lose about 1% per decade. 10x100=1000. Some magnets can last indefinately. obviously if all magnets lost their charge in a 1000YEARS we wouldn't be finding so many in nature.ome magents can last for a 1000YEARS. meaning they lose about 1% per decade. 10x100=1000. Some magnets can last indefinately. obviously if all magnets lost their charge in a 1000YEARS we wouldn't be finding so many in nature.
If you have an old amalgam filling, you may notice that it's corroding around the edges. Typically, a silver metal filling will last for 12 years, but some need to be replaced in as little as five years. Teeth grinding, heavy biting and other conditions can weaken the filling, causing it to leak, crack or fall out. This picture shows an amalgam filling that's 25 years old.