Over 4 billion years ago, as planets were coalescing around the newborn Sun, our star may have gone on an epic road trip across the Milky Way along with thousands of stellar “twins.” And we may owe ...

The sun has been Earth's constant companion ever since our planet emerged. But if the sun were to suddenly disappear, what would happen to our home planet? To understand the fate of a sunless Earth, ...

A sudden surge of solar activity has shaken space weather forecasts after NOAA confirmed that the Sun unleashed two powerful X-class solar flares within just seven hours, briefly disrupting radio ...

Comet 3I/ATLAS was expected to come within 130 million miles of the sun on Oct. 30. For the time being, 3I/ATLAS will remain on the opposite side of the sun from Earth, making it impossible to observe ...