For most of human history, Earth has been known as the “Pale Blue Dot,” a term popularized by astronomer Carl Sagan when referring to the iconic 1990 image taken by Voyager 1. But for billions of ...

It looks like funky graphic art: splotches of brilliant purples and blues on a light green background, with dark curlicues twisting ... a conference related to Earth observation from space. “It was ...

Earth's oceans may have been green for billions of years until the first photosynthetic organisms flooded our atmosphere with oxygen.

A green comet will be visible from Earth for the first time in 50,000 years. Astronomy educator Charlie Eder, who works at the Vanderbilt Planetarium in Centerport, says this event is especially rare.

There are very special cases, when the sky is very clear and exceptionally transparent, that a green flash can be glimpsed just as the very topmost part of the sun is rising or setting.

Green Lantern has fought evil with the power of will on his side for decades, and DC’s Earth One graphic novel series finally made a major and long-incoming alteration to Hal Jordan’s backstory. DC ...

A rare green comet that has been traveling through our solar system for the last month is expected to make its closest pass to Earth between Wednesday and Thursday, according to NASA and astronomers.

SANTA BARBARA, Calif. - Cloudy conditions didn’t keep people away from attending this year's Earth Day Festival. In 1970, Earth Day was created in Santa Barbara after an oil spill, creating one ...

A rare green comet that has been traveling through our solar system for the last month is expected to make its closest pass to Earth between Wednesday and Thursday, according to NASA and astronomers.