India, Nov. 6 -- On US election day, astronauts Butch Wilmore, Sunita Williams, and Don Pettit shared shared a picture of themselves on Instagram while sporting socks in patriotic hues. Out of three, the socks of two astronauts featured a message -- "Proud to be American."

According to the Texas Harris County Clerk of Court's Office, the three astronauts cast early ballots for president from the International Space Station.

Over 1.2 million individuals. including the astronauts, cast early ballots in Harris County, Texas.

Ballots cast in space are sent to Earth via NASA's Near Space Network, a network of satellites in orbit that connect to antennas on Earth, much like the majority of data sent between the space station and mission cont...