Scientists mapped how global warming may alter sunlight reaching Earth's surface, with implications for polar ice, weather, ...

This was achieved using TRACERS, NASA's twin satellites to sample and analyze high-energy electrons.

For observers on Earth, the sun appears as a bright, familiar disk—but what we see is only half the story. Like the moon, one half of the sun is permanently hidden from our direct view: the far side ...

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. The ...

Every year in early January, Earth reaches the closest point in its orbit to the Sun, a moment astronomers call perihelion. We are slightly nearer to our star and receiving more solar energy than we ...