THE recent radar measurements of Mercury indicate that the period of rotation of the planet is 59 ± 5 days1. This result is in complete disagreement with the previously quoted value of 88 days ...

But because of its fast orbit, one Mercury year takes 88 Earth days. This means that two years on Mercury lasts for only three days. The planet's sunrise would be unusual to us on Earth. Due to its ...

The planet Mercury may be hot, but it appears to be cooling down. That's the conclusion of a new study that looked for the kinds of features on Mercury that can form as the surfaces of planets ...

DURING the recent inferior conjunction of the planet Mercury in April, 1965, radar observations were obtained by the Arecibo Ionospheric Observatory in Puerto Rico (operated by Cornell University ...

Mercury is the closest planet to the Sun, with its average distance about 36 million miles (58 million km). Skip to content Introducing the all-new Astronomy.com Forum!

Mercury orbits the Sun at an average distance of about 57.9 million kilometers (36 million miles). It's the innermost planet in our solar system, i.e. the planet closest to the sun.

This is a period when the planet Mercury enters retrograde motion and appears to move backward in the sky — although it isn't actually moving backward. Mercury, like Earth, has an elliptical ...

In the early morning hours of June 3, six planets, including Jupiter, Mercury, Uranus, Mars, Neptune and Saturn will momentarily align on the ecliptic path, however, experts say they will not all ...

This is one of a series of images taken by the ESA/JAXA BepiColombo mission on 8 January 2025 as the spacecraft sped by for its sixth and final gravity assist manoeuvre at the planet.