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Fast solar wind from a massive coronal hole in the sun could trigger dazzling auroral displays as geomagnetic activity is predicted to ramp up again over the weekend. A massive coronal hole has ...

On New Year's Day, NASA's Parker Solar Probe added to the festive cheer by sending home more good news about its record-breaking closest-ever approach to the sun. On Wednesday (Jan. 1), mission ...

"By studying the sun up close, we can better understand its impacts throughout our solar system, including on the technology we use daily on Earth, as well as learn about the workings of stars across ...

You can view five naked-eye solar system bodies simultaneously, moon-Venus-Saturn-Jupiter-Mars, spanning 159°. On Jan. 3, the 19 percent crescent has climbed nearly 5° to the upper left of Venus and ...

UFOs came to Washington (again), while NASA launched a new spacecraft to hunt for potential aliens in the solar system ... Take our year-end quiz to find out if you deserve a place among the ...

Astronomers believe that our solar system may still hold surprises, with ongoing efforts to find a hidden ninth planet, often referred to as Planet Nine or Planet X. If confirmed, this discovery ...