Most anticipated comet of the year makes closest approach to Earth this weekend

Comet Tsuchinshan-Atlas made its closest pass to Earth this weekend, but weather permitting, it should be visible to the naked eye until the end of October. Here's what to know.

Watch magical moment man proposes under dreamy purple aurora

The geomagnetic storm this week helped make the aurora incredibly vibrant, and brought Northern Light displays to much of the northern U.S.

Watch: 'Comet of a century' puts on beautiful show while zooming by Earth

Astronomers said Comet Tsuchinshan-ATLAS reached perihelion, its closest point to the Sun, on Sept. 27 and will spin back around for another visit to Earth's neighborhood. On or before Oct. 12 will be the next chance to see the celestial show.

Earth is getting a temporary second moon this fall

Earth will soon have a visitor — and not of the extraterrestrial kind. Astronomers found a small asteroid that will orbit our planet this fall, becoming a "mini-moon" temporarily.

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.