Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars. Scientists call this difference crucial to ...

Uranus just got a little more time on its hands. A fresh analysis of a decade's worth of Hubble Space Telescope observations shows Uranus takes 17 hours, 14 minutes and 52 seconds to complete a full ...

An international team of astronomers using the NASA/ESA Hubble Space Telescope have made new measurements of Uranus' interior rotation rate with a novel technique, achieving a level of accuracy 1,000 ...

Earth's day used to be five hours shorter, and it's predicted to continue lengthening over time. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A network of powerful ground-based telescopes captured rare starspot-crossing events on TOI-3884b, revealing cooler patches on the star’s surface and rapid changes tied to its rotation. By combining ...

Most of us wish we had more than 24 hours in a day to get everything done and actually breathe. What if each day gave us more than double that time? If it wasn’t for a phenomenon that put the ...

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 ...

The luminosity and rotation speed changed significantly. There is an inverse relationship between rotational speed and period; a shorter period indicates faster rotation. The acceleration rate of ...