Dmitri Ivanovich Mendeleev (also romanized Mendeleyev or Mendeleef;  ) ( - ), was a Russian chemist and inventor.. 
It increases throughput by moving some compenting tasks from the ground to the spacecraft, and saves money by allowing the use of modern Program languages.Ìranṣe ìṣàtúnṣe 3B Servicing mission 3B Flown by Columbia in March 2002 saw the installation of a new instrument, with the foc (the last original instrument) being replaced by theAdvanced Camera for surveys (ACS).. 