Add Yahoo as a preferred source to see more of our stories on Google. Venus could make a brief appearance this weekend as it passes between the Earth and the sun. Just be warned: It won't be easy to ...

Newly emerged sunspot region AR3663 is already making a name for itself, firing off not one but two powerful solar flares within just six hours of each other. The first eruption occurred last night ...

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 ...

At the start of the year, Earth will quietly reach a milestone in its orbit around the sun. Known as perihelion, this is the moment when our planet is closer to the sun than at any other point in the ...

A strip of cool water stretches west from South America along the equator, helping set the pace for some of the planet’s most important weather swings. That Pacific “cold tongue” helps steer the El ...