OTD…April 25 and the Hubble deploy

Veteran astronaut John Grunsfeld, who flew five space shuttle missions before becoming the head of NASA’s science mission directorate in 2012, announced Tuesday he will leave the space agency at the end of April.

#OTD…Launch of Atlantis in 1989 to send the Magellan space probe to Venus

OTD in 1994…Endeavour experienced an on-pad abort due to a main engine problem during startup