The boundary of the Solar System remains somewhat poorly understood. We know we are within it, in a region of space called ...

"This is one of the most exciting results from Solar Orbiter so far." ...

Our Sun’s outer atmosphere, the corona, is millions of degrees hotter than it should be, and no one knows why.

During a close approach to the Sun, the European Space Agency’s Solar Orbiter watched that tipping point unfold in unusually fine detail. The spacecraft observed the M7.7-class flare—strong but still ...

Using data collected by NASA's Parker Solar Probe during its closest approach to the sun, a University of Arizona-led ...

NASA’s newly launched IMAP mission is set to tell us more about the boundary between our Solar System and interstellar space ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...

NASA researchers show that artificial intelligence can anticipate solar flare buildups by tracking subtle changes across the ...

Unlike earlier studies, which often examined chemistry and atmospheric motion separately, the new simulations combined both.

The sun’s rhythmic rise and fall in the sky can make it easy to forget that our star is unpredictable—a roiling, burbling mass of magnetically knotted plasma that governs the entire solar system. The ...