The work, by artist Bren Luke, is called Anna Lee Fisher. Turns out Anna Lee Fisher was a chemist and astronaut. She was selected as an astronaut candidate in 1978, completed her training in 1979, and flew in late 1984. Fisher logged 192 hours in spaceflight, and was the first mother in space.
By the way, for fellow Ballaaratians, I found the print at new local art gallery Wolveschildren.