where the planet passes across the face of the Sun as seen from Earth. During the transit, Mercury appeared as a dark silhouetted disc against the bright surface of our star. There are 14 transits ...

Another intriguing discovery involves the detection of cold ions at Mercury's surface, such as oxygen, sodium, and potassium. These particles are likely ejected by micrometeorites or the solar wind, ...

It is a world of extremes. Explore facts about our solar system's fastest planet. Mercury is slightly larger than our Moon - 15,329 kilometres around its equator. Its radius, the distance from the ...

A Planet in Contraction and Its Battle Scarps While missions to explore the moon's surface are numerous, the same cannot be said for Mercury. However, older observations continue to unveil the ...

Mercury is a little-known, still mysterious world. But one thing is certain. Mercury, the closest planet to the sun, can't ...

Since is has almost no atmosphere to retain heat, Mercury's surface experiences the greatest temperature variation of all the planets, ranging from 100 K at night to 700 K during the day.

Mercury will be in retrograde until Dec. 15, the last of four times it appears to move backward in the sky this year. For at least a portion of 2024, nearly every planet in our solar system has ...

Much closer to the horizon and a distinct reddish color, the planet Mercury isn’t on most people’s observing lists. In fact, a professional astronomer last year told me it was impossible to ...