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