Do the periods of comets decrease because they lose mass every time they get near the Sun? Robert BaileyConover, Wisconsin ...

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 ...

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 ...