When we think about orbits, we usually picture the Earth zooming around the sun. But does the sun just sit there? Or is it on its own journey? I asked my friend Guy Worthey. He’s a space scientist at ...

Every year in early January, Earth reaches the closest point in its orbit to the Sun, a moment astronomers call perihelion.

You're not imaging it. The sun has been rising later in Illinois following the winter solstice. But the days aren't getting shorter. Here's why.

Our grasp of how stars rotate is "insufficient," with implications on our ability to understand the causes of phenomena on the sun like solar flares and coronal mass ejections that cause aurora and ...

The Earth and the entire Solar System depend on the Sun for warmth and gravity as it floats around in space, with the bright yellow ball of light being the center of the many planets surrounding it, ...

The sun moves in such a predictable way across the sky that you might never suspect that its relationship with Earth is changing all the time. In fact, the average distance between Earth and the sun ...

The Parker Solar Probe is gearing up for a final swing past Venus on November 6, which will nudge it into an extremely tight orbit around our sun. Once it reaches its final position around our star on ...

The fastest object ever built by humans will fly within a whisker of the sun today. The Parker Solar Probe will race past at 435,000mph as it studies the sun's surface and atmosphere. That's so fast ...