Sentences with phrase «circular orbits changed»

Sharma worked out how the speed of circular orbits changed with distance from the galactic centre (called the rotation curve).

Not exact matches

The Earth's axis wobbles or «precesses» on a 26,000 - year cycle; it changes its average tilt on a 41,000 - year cycle; and it shifts its orbit from being roughly circular to more elliptical on a 100,000 - year cycle.

The cycle between an elliptical and circular orbit and a change in the tilt of Earth's axis combined to create periods in which our planet did not tilt very much as it revolved around the sun, thereby eliminating seasons and resulting in less climatic variability.

This cycle coincides with a change in Earth's orbit as it evolves from a more circular orbit to a more elliptical orbit.

There is evidence that Earth has gone through at least one globally frozen, «snowball» state in the last billion years, which i... ▽ More Although the Earth's orbit is never far from circular, terrestrial planets around other stars might experience substantial changes in eccentricity that could lead to climate changes, including possible «phase transitions» such as the snowball transition (or its opposite).

Planetary gravity forces from the outer 4 planets over 100,000 years gradually change the shape of Earth's orbit from circular, to elliptical along with shorter term changes in the inclination angle and winter precession timing.