The Air Force won’t yet confirm which of the Boeing-built spaceplanes will be making the voyage. The first craft returned in October from a 675-day mission in space following a 224 day trek in 2010. OTV No. 2 spent 469 days in space in 2011-2012 on its only mission so far. “The program selects the Orbital Test Vehicle for each activity based upon the experiment objectives,” said Capt. Chris Hoyler, an Air Force spokesperson. “Each OTV mission builds upon previous on-orbit demonstrations and expands the test envelope of the vehicle. The test mission furthers the development of the concept of operations for reusable space vehicles.”

Methuselah sprouted back in 2005, when agriculture expert Solowey germinated his antique seed. It had been pulled from the remains of Masada, an ancient fortification perched on a rock plateau in southern Israel, and at the time, no one could be sure that the plant would thrive. But he has, and his recent reproductive feat helps prove just how well he’s doing.

For a while, the Judean date palm was the sole representative of his kind: Methuselah’s variety was reportedly wiped out around 500 A.D. But Solowey has continued to grow date palms from ancient seeds discovered in the region, and she tells National Geographic that she is “trying to figure out how to plant an ancient date grove.” Doing so would allow researchers to better understand exactly what earlier peoples of the region were eating and how it tasted.