The planets of our solar system change in position while orbiting a central star, the sun. But does the sun itself move within the solar system?

This Is How Much Sunlight Your Solar Panel System Needs Peak sun hours measure sunlight intensity, which is key for solar power. See if your home gets enough light to make solar panels worth it.

The outer solar system is a vast and mysterious place that could be harboring hidden objects we know almost nothing about — from the elusive Planet Nine and baby black holes to interstellar ...

This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course by a passing star. Such a world-shattering cataclysm is ...