A new sunspot group has quickly grown and is spewing out the most intense type of solar flare. Effects on Earth are forecast ...

To initially fit the bears with the collar cams, the researchers tracked them through the snow by helicopter last May.

The sun emitted some of the most powerful solar flares this week, NASA announced.

The sun has emitted several solar flares in recent days, putting space-weather experts on the lookout for northern lights ...

Don Lemon said about a dozen federal agents came to his Los Angeles hotel to arrest him last week, even though his attorney had told authorities he would turn himself in to face federal civil rights ...

NASA's Solar Dynamics Observatory captures a strong X1.5 solar flare erupting from the Sun, emitting extreme ultraviolet ...

Phoenix had a three-game winning streak snapped to start a road trip with a 117-93 loss Sunday to the Los Angeles Clippers.

The sun is experiencing a violent solar storm, releasing one of the strongest solar flares seen in the past 30 years ...

Jane Anderson’s play “Defying Gravity” explores the Challenger disaster, during which a teacher and six others died when a spacecraft exploded. The show takes place in the past and the ...

Stargazers can see six planets all in one evening during the second month of the year, especially Mercury, which is usually ...

A rare arctic outbreak forces engineers to delay the critical Artemis II fueling test, narrowing the February launch window.

A rare planetary parade will march across the sky on Saturday, Feb. 28, according to NASA. Venus, Mercury, Saturn, Jupiter, ...