Polaris Dawn live updates: SpaceX launches 4 private astronauts for historic spacewalk mission Tuesday morning

SpaceX's Falcon 9 rocket lifted off at 5:23 a.m. ET carrying four Polaris Dawn mission private astronauts to low-Earth orbit from Launch Complex 39A at NASA’s Kennedy Space Center in Florida on Tuesday morning.

Geomagnetic storm watch issued, could produce auroras visible in US

The strongest impacts are expected to arrive on Tuesday, which could produce aurora lights father away from Earth’s poles, including in parts of the U.S.

Boeing's Starliner spacecraft returns to Earth without astronauts

The troubled Boeing Starliner spacecraft parachuted into the New Mexico desert overnight, without the astronauts it carried to the International Space Station in early June.

NASA astronaut stuck in space reports ‘strange noises’ coming from troubled Starliner capsule

A NASA astronaut at the International Space Station (ISS) on Saturday reported hearing a "strange noise" coming from the Boeing Starliner spacecraft just days before it is set to leave the station and return to Earth on autopilot.

Watch: Massive fireball wows onlookers in four states

A massive fireball stunned onlookers as it streaked across four states. Scientists are now on the hunt for pieces that may have fallen to the ground.

Here's when NASA's Starliner astronauts will finally come home – and how

NASA says it's not safe enough to let Butch Wilmore and Suni Williams fly the new Starliner spacecraft back to Earth, so they'll come home aboard a SpaceX Dragon capsule next year. Meanwhile, Boeing will suffer the ignominy of being bailed out by a rival.

Miss Monday's supermoon? When you can see it again

Monday's supermoon appeared 14% larger and 30% brighter, but more supermoons are on the way.

Don't miss the rare Blue Supermoon rising Monday

Also known as the Sturgeon Moon, the eighth full moon of the year promises a rare and breathtaking celestial sight.

Northern Lights put on a show in Chicago

The Northern Lights were spotted as far south as Chicago late Sunday into early Monday morning.