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.
It does seem clear that the generation of the magnetic field is linked to the rotation of the earth, since Venus with a similar iron-core composition but a 243 Earth-day rotation period does not have a measurable magnetic field.