News

This visualization shows Earth’s axial precession, a wobble in the planet’s rotational axis with a period of about 26,000 years that is induced by tidal forces from the sun and moon.
Because of axial precession, the faint star Thuban was the north star 5,000 years ago. In about 12,000 years, the bright star Vega will be the north star. Axial precession also occurs with binary ...
Axial precession has changed which constellations the Sun appears in over time. ... Due to precession, it moved into Pisces around 100 B.C., where it is now and will remain until A.D. 2700, ...
Our Earth behaves much the same, and over time, its rotational axis traces a giant circle among the stars. Rarely does anyone other than astronomers ever think about precession since a full cycle ...
Axial precession occurs on a cycle of roughly 26,000 years and arises because the Earth wobbles slightly as it rotates, similar to the wobble of a toy top. Studies from the 1980s revealed that ...
When updates were made to Shi Shi Xing Jing by Han Dynasty astronomer Zhang Heng sometime around 125 A.D., axial precession meant that star positions were inconsistent with Shi’s original catalog.
Planet Earth spins a full 360°, about its axis, every 24 hours. ... Earth's rotational axis will precess over time due to two combined effects: axial precession (shown ...
When updates were made to Shi Shi Xing Jing by Han Dynasty astronomer Zhang Heng sometime around 125 A.D., axial precession meant that star positions were inconsistent with Shi’s original catalog.
New research suggests that Earth’s orbital variations—the slow changes in its tilt, axial precession, and shape of its orbit—may influence the timing of massive volcanic eruptions, reshaping ...
Axial precession occurs on a cycle of roughly 26,000 years and arises because Earth wobbles slightly as it rotates, similar to the wobble of a toy top.