The sun's distance from Earth changes throughout the year but it has nothing to do with the seasons ... body's orbit where it is nearest to the sun. Derived from the Greek words peri (around ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

The average Earth-sun distance is 150 million kilometers, and the main reason for the seasons ... orbit. Thousands of years ago, the ancient Greeks believed all celestial objects orbited around ...

Changing seasons makes some people anxious because they want things to stay the same. They love the cycle of sameness ...

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The year is marked by changes in the weather, ecology, and amount of daylight, and these changes result from earth's orbit around the sun and earth's axial tilt relative to the ecliptic plane.

Skywatchers in central Florida and southern Texas can witness a rare lunar standstill on Feb. 7, as the waxing gibbous moon ...

There are eight planets in the solar system, and each travels on its own path around the sun ... so slowly — once every 58 Earth days — in some places, the sun can appear overhead for weeks ...

Astronomers have discovered a large Earth-like planet orbiting a distant star that could be home to alien life. The exoplanet ...

Ready for winter to wrap up? The good news is the first day of spring is right around the corner. Here's what we can expect ...

Our solar system, a cosmic ballet of planets held together by gravity and inertia, is uniquely structured compared to many ...