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 ...
An Earth-orbiting spacecraft just experienced an unusual phenomenon: a lunar transit and an Earth eclipse on the same day. On July 25, at different times, both the moon and Earth passed between NASA's ...
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 ...
An artist's conception of a National Oceanic and Atmospheric Administration (NOAA) GOES satellite orbiting Earth. Credit: NOAA The U.S. GOES-East satellite, orbiting 22,300 miles above Earth, snaps ...