The Hubble Telescope appears as a tiny silhouette during a perfectly timed solar transit captured from Puerto Rico.

A new NASA study suggests that solar activity will remain high or rise further in the coming decades, contradicting previous assumptions that the sun was quieting down — and scientists "don't ...

Visuals from the European Space Agency’s Solar Orbiter reveal chaotic solar magnetism in the solar polar region. Even better images are expected in the years ahead. By Jonathan O’Callaghan Spacecraft ...

Space seems like it should be blazing hot with the Sun shining nonstop, yet astronauts and spacecraft deal with freezing cold. The reality is more complicated than distance alone because how heat ...