First of all the rotation axis changes relative to the Earth’s surface which is referred to as polar motion. The main component of polar motion is the so-called Chandler wobble. Although it was ...

A super-Earth planet that dips in and out of its star's habitable ... around the center of mass that it shares with its ...

A newly confirmed exoplanet around a nearby sunlike star might be astronomers’ best chance yet to look for life beyond the ...

Named HD 20794 D, the newly discovered exoplanet orbits a star similar to the Sun, and researchers believe it may be able to ...

The Ukiah Latitude Observatory has a rich history, from its role in global scientific research to its ongoing cultural ...

Astronomers have discovered an Earth-mass planet very close to us ... over four years—in the hope of detecting a very slight “wobble” in the star. That can only be caused by the ...

Earth's rotational poles ... a metal ball attached by a steel wire to a grip - forces the athlete to wobble around the center of rotation. Over geological time, the gravitational pull of Sun ...

However, the Moon’s rotation and orbit evolve in a very complex way on its journey around the Earth, and there is ... and reconsiders the Moon’s ‘wobble’ (also called a physical libration ...