- How - Do - I - Use - It - In - My - G arden . htm ▁Wiel and , ▁B . ▁( 2 0 1 4 ). ▁Hor se ▁man ure ▁management ▁and ▁comp ost ing . http :// www . extension . umn . edu / ag ric ulture / hor se / care / hor se - man ure / ▁ ▁Category : F ert il izers <0x0A> </s> ▁The ▁Mars ▁Ob server ▁space craft , ▁also ▁known ▁as ▁the ▁Mars ▁Ge os cience / C limat ology ▁Or b iter , ▁was ▁a ▁robot ic ▁space ▁pro be ▁launched ▁by ▁NASA ▁on ▁September ▁ 2 5 , ▁ 1 9 9 2 , ▁to ▁study ▁the ▁Mart ian ▁surface , ▁atmosphere , ▁climate ▁and ▁magnetic ▁field . ▁ ▁During ▁the ▁inter plan et ary ▁cru ise ▁phase , ▁communication ▁with ▁the ▁space craft ▁was ▁lost ▁on ▁August ▁ 2 1 , ▁ 1 9 9 3 , ▁three ▁days ▁prior ▁to ▁orb ital ▁insert ion . ▁ ▁Att empt s ▁to ▁re - est ab lish ▁communication ▁with ▁the ▁space craft ▁were ▁un success ful . ▁ ▁Mission ▁background ▁ ▁History ▁In ▁ 1 9 8 4 , ▁a ▁high ▁priority ▁mission ▁to ▁Mars ▁was ▁set ▁forth ▁by ▁the ▁Sol ar ▁System ▁Ex pl oration ▁Committee . ▁ ▁Then ▁titled ▁the ▁Mars ▁Ge os cience / C limat ology ▁Or b iter , ▁the ▁Mart ian ▁orb iter ▁was ▁planned ▁to ▁expand ▁on ▁the ▁information ▁already ▁gathered