as they orbit the Sun. The time it takes to spin once - one "day" on a comet - is also called a period, but in this case, it is specifically called the rotational period. Just in case you're referring ...

So why has the sun been rising later than it did on Dec. 21? Like much of our day and night cycles, the answer lies in Earth's rotation and orbit. Yes, the sun has risen later than it did Dec. 21 ...

Auroras are impacted by the solar cycle, as scientists monitor conditions around the 27-day period of the sun's rotation. With solar conditions and weather on Earth being so variable, aurora ...

In a world first, Japanese researchers used the Fugaku supercomputer to reproduce imbalances in the sun’s rotation, a phenomenon that has puzzled astronomers for centuries. The scientists from ...