Bacteria was found by a team led by Indian American scientist at NASA Dr. Kasthuri Venkateswaran
Epps will join veteran astronaut Andrew Feustel as a flight engineer.
Astronaut Kate Rubins also cast her ballot from space a few weeks ago.
The CST-100 Starliner crew capsule is designed by Boeing in collaboration with Bigelow Aerospace
NASA hopes to announce its selections in mid-2017.
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