The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere. On the equator, the sun will be directly overhead at ...

An analysis of two decades of data from NASA's Hubble Space Telescope has provided fresh insights into the complex ...

Did you know both the astronomical first day of spring and Easter Sunday are tied to the spring equinox? How they relate, ...

The difference is because the astronomical seasons are based on the position of the Earth in relation to the sun, whereas the meteorological seasons are based on the annual temperature cycle and ...

The first four humans to orbit over Earth's north and south poles have safely returned to Earth.

The final piece of an advanced series of weather satellites officially began operating Tuesday to help provide better ...

During the equinox, the Earth's axis and its orbit line up so that both hemispheres ... While astronomical seasons depend on how the Earth moves around the sun, meteorological seasons are defined ...

They break down the year into three-month seasons based on annual temperature ... Here's what to know about how we split up the year using the Earth's orbit. As the Earth travels around the ...