For decades, scientists have been scratching their heads over one of the Sun’s most baffling mysteries: why is its outer ...

Did you know it rains on the Sun? Not water, of course. It's solar rain, which occurs in the Sun's corona, the outermost ...

Portal’s heat exchanger thruster, known as Flare, fires up during a test in a vacuum chamber. (Portal Space Systems Photo) Bothell, Wash.-based Portal Space Systems says it has successfully tested its ...

The daring NASA spacecraft made its closest-ever approach to the sun at 6:53 a.m. EST (1153 GMT) on Christmas Eve (Dec. 24). When you purchase through links on our site, we may earn an affiliate ...

Placing data centers in space could pave the way for sustainable computing with unlimited solar energy and free cooling, say ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

This October, renewable energy generation globally surpassed coal for the first time on record. Solar energy has played a ...

Dear Jim: We have a large family and use much hot water. I cannot afford to have a solar water heating system installed, but I would like to make some type of solar water heater myself. What do you ...

AI data centers on earth face bottlenecks like intermittent solar power, massive water usage for cooling (up to 1.7 million ...