Closeup of the RS-68A engine and four GEM-60 solid rocket boosters on the Delta IV Medium+ (5,4) rocket [OC] [2,000x2,500]

This comment was posted to reddit on May 14, 2017 at 2:20 pm and was deleted within 10 minutes.

Here's a sneak peek of /r/spacex using the top posts of the year!

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