RT @LockheedMartin: 1st #…
RT @LockheedMartin: 1st #GRAIL spacecraft separates from upper stage 1 hr 22 min after launch. 2nd GRAIL, 8 min later. Press conf @ ~11: …
RT @LockheedMartin: 1st #GRAIL spacecraft separates from upper stage 1 hr 22 min after launch. 2nd GRAIL, 8 min later. Press conf @ ~11: …