P erihelion – or the Earth's closest approach to our host star – will take place on January 3, 2026. At this point, our planet will be around 2.5 million kilometers ( 1.5 million miles) closer to the ...

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.

Earth’s annual orbit around the Sun is not always perfectly circular; instead, it displays variations in what is known as eccentricity — in which the planet’s orbit varies between a more-circular and ...

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.

Prepare to look up and reconsider everything you thought you knew about these cosmic wanderers. Comet 3I/ATLAS has shattered records, boasting the highest recorded orbital eccentricity. Its behaviour ...

An international team of astronomers reports the discovery of a new super-Earth exoplanet orbiting a nearby M-dwarf star known as Ross 508. The newly found alien world, which received designation Ross ...