Earth's orbit, for instance, is regularly tugged about by the giant planets, which enact long-period changes on its orbital eccentricity, axial tilt, and precession. These changes, taking place ...

Eccentricity of the Earth's orbit around the Sun. The fluctuation between a nearly circular and elliptical orbit drives cyclic changes in the Earth's environment, including the global carbon cycle.

First, scientists have been too confident when predicting Earth's orbit and its eccentricity accurately at certain points in our planet's history. Second, there are points during Earth's history ...

There's nothing innate about the Earth or its atmosphere that marks the boundaries of low Earth orbit. This is a distinction ...

Changes in Earth's orbit have helped pace climatic change for millennia. Scientists are now trying to understand whether - and how - these changes remodeled the landscapes our ancient ancestors ...

NASA has announced that an airplane-sized “city killer” asteroid will skim past Earth today — one of four “hazardous” space rocks to graze our orbit in less than 12 hours. Dubbed 2002 ...

These sapropel layers are packaged into groups of 4–5 (Figure 4), reflecting the influence of slight changes in the shape of the Earth's orbit around the sun (eccentricity) on modulating the ...

Such an object with less than 0.25 eccentricity (a roughly circular orbit), therefore, would have an average altitude of 2,042 km (1,269 mi). The ISS is in a low Earth orbit. Credit: NASA Despite ...