Irene Klotz

SpaceX has pushed back its first launch of a U.S military satellite for Monday (May 1) after a sensor issue triggered a 24-hour delay on Sunday (April 30).

NASA is years away from having new spacesuits for its deep-space astronauts despite spending nearly $200 million on three separate development efforts over the past decade.

Richard Branson's Virgin Galactic is on track to begin commercial passenger spaceflights before the end of 2018, the company's chief executive said.

Celestis, the same company that lets people send their loved ones' cremated remains to space, unveiled a new service that will launch samples of DNA off the planet.

The experiment, which arrives at the ISS on Saturday, will test a technique to reproduce and analyze telomeres, the DNA-protecting tips of chromosomes.

NASA hasn't planned any follow-on missions for Enceladus, but it could be selected for a current or future round of planetary missions.

An Orbital ATK cargo ship bound for the International Space Station is poised for liftoff Tuesday (April 18) aboard a United Launch Alliance (ULA) Atlas V rocket.

SpaceX aims to re-fly one of its used Falcon 9 rocket first stages for the first time Thursday (March 30), on a mission to loft the SES-10 communications satellite.

A Delta IV rocket blasted off Saturday night (March 18) to deliver a $445 million U.S. military communications satellite into orbit, the ninth member of a planned network of 10 satellites.

Cloudy skies and high winds in Florida early Tuesday (March 14) forced SpaceX to delay the launch of a Falcon 9 rocket carrying the EchoStar 23 communications satellite, the company said.

Conditions on Saturn's largest moon could make Titan the best place in our solar system for us to test ideas about the diversity of life in space.