Video: New Horizons phone home will confirm health of spacecraft

Take a look back on the liftoff of Boeing’s Starliner spacecraft on its first orbital test flight Dec. 20 aboard a United Launch Alliance Atlas 5 rocket with these photos showing the capsule streaking into space at dawn.

SpaceX’s Falcon 9 rocket and Crew Dragon spacecraft emerged from the company’s hangar at the Kennedy Space Center early Thursday for the quarter-mile trip up the ramp to historic Launch Complex 39A, ready for final testing before liftoff on the first U.S. mission to carry astronauts into orbit in nearly nine years.

Four decades after NASA’s Viking landers acquired humanity’s first view of the surface of Mars, a planet whose reality lived in the imaginations of skywatchers for millennia, a definitive smoking gun for microbial life there still eludes scientists.