Defying Gravity premieres this Sunday night on ABC.

In anticipation of the two-hour pilot, the network has released the following press release:

The Antares crew, a team of eight astronauts, launches into space, embarking on a six-year journey to explore Venus and other planets in the solar system, find their lives and destinies intertwined and carefully directed, not only by Mission Control officials on Earth, but also by an unseen force which is much closer and far more powerful.

In the second hour, some rocky and intriguing developments confront the crew as they learn to adjust to life on board the Antares, as they find that some past choices, combined with an unknown element in the ship's mysterious Storage Pod 4, lead to a complex web of dreams, desires and illusions that result in a life-threatening crisis.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.