Mercury is the smallest and innermost planet in the Solar System. Its orbital period around the Sun of 88 days is the shortest of all the planets.
Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, so it can only be seen visually in the morning or the evening sky.
A tenuous exosphere primarily containing trace amounts of hydrogen, helium, atomic oxygen, sodium, and calcium.
Drastic extremes. The surface temperature ranges radically from 100K (-173°C) at night to 700K (427°C) in direct sunlight.
One of the densest planets, composed heavily of metallic elements, primarily an iron core that makes up a large portion of its volume.
Mercury does not have any major moons. It is one of the few planets in our solar system without a natural satellite, dancing alone around the sun.
Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, so it can only be seen visually in the morning or the evening sky, and never exceeds 28° away from the Sun.
From its silent orbit to its defining cosmic footprint, Mercury remains an anchor in our ongoing quest to chart the unknown. The journey does not end here; it simply waits for the next investigator.
We have explored the surface, dived into the core, and sailed the celestial oceans. Every speck of light surrounding Mercury is a story waiting to be told. The Mercury environment is a testament to the infinite cosmos.