For decades, scientists have wondered how the moon can have water. It’s dry, airless, and lacks an atmosphere, so the ...

Scientists have hypothesized since the 1960s that the sun is a source of ingredients that form water on the moon. When a ...

The sun may rise every morning, but the amount of sunlight reaching Earth's surface can substantially vary over decades, according to a perspective article led by an international research team.

On the morning of April 21, you’ll be able to see Venus, Mercury, and Saturn low in the east — all without a telescope.

Visualize the night sky and the potential environmental impacts if Earth were accompanied by Jupiter's diverse array of moons ...