WATCH: SpaceX's Polaris Dawn crew completes first private spacewalk

Jared Isaacman, CEO of Shift4 integrated payment processing solutions, participated in the first ever private spacewalk by a group of astronauts who left a SpaceX capsule after a delay of a few hours, testing a new line of spacesuits in the company's riskiest mission yet.

A record number of human beings are now in orbit

For the first time, there are 19 human beings orbiting the planet. They represent three different countries and are aboard three different spacecraft.

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.

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.

Girl, age 12, wins top fishing prize of 'Master Angler Milestone': 'She does it all'

Lucy Moore is the first female and the youngest angler to achieve the coveted fishing award, Master Angler Milestone in Maryland, and already has her sights set on her next big achievement.

West Nile and EEE: What's the difference between the mosquito-borne viruses?

The mosquito is the world’s deadliest animal, and dangerous infections have been in the headlines lately. Here’s what to know about the diseases and how to tell them apart.

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.

Who is the youngest person in space? Depends who you ask

Blue Origin has launched the oldest person, the youngest person and now the youngest woman into space – at least by their metric.

This bill bans chemtrails, but do they even exist?

Tennessee recently passed a bill to ban chemtrails, igniting debates over whether they exist. Explore the origins of the chemtrails conspiracy theory, its influence on legislation, and expert opinions that debunk the myth, explaining the true nature of these airplane trails.