The Mechanics of Earth's Spin Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 ...

rotation. Here’s the puzzle: That is about 6 minutes, or one percent, longer than the radio rotational period measured by the Voyager 1 and Voyager 2 spacecraft, which flew by Saturn in 1980 and 1981.

Tracking the rotation speed of solid planets, like the Earth and Mars, is a relatively simple task: Just measure the time it takes for a surface feature to roll into view again. But giant gas planets ...

Hi’iaka is the larger outer satellite of the dwarf planet Haumea. Using relative photometry from the Hubble Space Telescope and Magellan and a phase dispersion minimization analysis, we have ...

Astronomers have found that the rotational profile of a nearby star, V889 Herculis, differs considerably from that of the Sun. The observation provides insights into the fundamental stellar ...

Midway through his first season in charge of Manchester United, Louis van Gaal wanted answers. Specifically, the festive period of 2014 was approaching and Van Gaal wanted to understand why the squad ...

Data from the European Space Agency's Gaia mission has enabled the creation of a detailed catalog of asteroid rotations through the analysis of their light curves. These curves measure the variations ...

Phaethon is just the 11th known asteroid to demonstrate a changing rotational period. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Japan ...

MY estimate of a decrease of 0.3 sec. in the rotation period (strictly the ‘tumbling’ period) is the residual effect, after making allowance for the difference between the flash period and the true ...