Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars. Scientists call this difference crucial to ...

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere ...

Starting in the 1970s, Earth Day events were held all around the country, raising awareness about smog, pollution, and the need to protect the environment. That movement resulted in major policy ...

Earth's magnetic field was struck by a "severe" solar storm Monday (Jan. 19), triggering vibrant auroras in the U.S. and ...

University of Texas Arlington provides funding as a member of The Conversation US. Right now, you’re zooming through space at incredible speeds. As just one of all the living creatures on Earth, ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. About 92 million miles from the sun, Earth and its 8.2 ...

"The planet gets in the way from the point of view of any one spacecraft, so we had to spread them around the planet to look everywhere all at once." When you purchase through links on our site, we ...

This is read by an automated voice. Please report any issues or inconsistencies here. Day and night will get equal time for a brief moment as much of the world heads into fall. The autumnal equinox ...

Right now, you’re zooming through space at incredible speeds. As just one of all the living creatures on Earth, you’re along for the ride as our planet constantly moves in two major ways. First, ...