▁E DO ▁pal let ▁conducted ▁research ▁on ▁micro gravity , ▁Life ▁Sciences , ▁Earth ▁and ▁cel est ial ▁observations , ▁and ▁human ▁adaptation ▁to ▁the ▁low ▁gravity ▁environment . ▁ ▁The ▁following ▁miss ions ▁used ▁the ▁E DO ▁pal let : ▁ ▁{ | ▁class =" wik itable " ▁! ▁E DO ▁Fl ight ▁! ▁Sh utt le ▁! ▁Mission ▁! ▁La unch ▁Date ▁! ▁D uration ▁! ▁Primary ▁Pay load ( s ) ▁| - ▁| 1 ▁| Col umb ia ▁| ST S - 5 0 ▁| J une ▁ 2 5 , ▁ 1 9 9 2 ▁| 1 3 ▁days , ▁ 1 9 ▁hours , ▁ 3 0 ▁minutes , ▁ 4 ▁seconds ▁| Un ited ▁States ▁Micro gravity ▁Labor atory - 1 ▁| - ▁| 2 ▁| Col umb ia ▁| ST S - 5 8 ▁| Oct ober ▁ 1 8 , ▁ 1 9 9 3 ▁| 1 4 ▁days , ▁ 0 ▁hours , ▁ 1 2 ▁minutes , ▁ 3 2 ▁seconds ▁| Sp ac el ab ▁Life ▁Sciences - 2 ▁| - ▁| 3 ▁| Col umb ia ▁| ST S - 6 2 ▁| M arch ▁ 4 , ▁ 1 9 9 4 ▁| 1 3 ▁days , ▁ 2 3 ▁hours , ▁ 1 6 ▁minutes , ▁ 4 1 ▁seconds ▁| Un ited ▁States ▁Micro gravity ▁Pay load - 2 ▁| - ▁| 4 ▁| Col umb ia ▁| ST S - 6 5 ▁| J uly ▁