You can read more here (if you feel like😊)
https://science.nasa.gov/mercury/
The written version if you don't feel like watching the video.
Mercury is the smallest and innermost planet in our solar system, orbiting closest to the Sun. Because of its proximity, it completes one full orbit in just 88 Earth days, making it the fastest-moving planet. Despite this quick year, Mercury rotates slowly—one full day (sunrise to sunrise) lasts about 176 Earth days.
The planet has a rocky surface covered with craters, similar to Earth’s Moon. One of its most famous features is the Caloris Basin, a massive impact crater formed by a huge collision billions of years ago. Mercury’s surface also has cliffs, known as scarps, which formed as the planet cooled and shrank over time.
Temperatures on Mercury are extremely harsh. During the day, it can reach about 430°C (800°F), while at night it can drop to -180°C (-290°F). This extreme variation happens because Mercury has almost no atmosphere to trap heat. Its thin exosphere is made up of atoms blasted off its surface by solar radiation and micrometeorites.
Mercury has no moons or rings. Its gravity is much weaker than Earth’s, and a person would weigh significantly less there. Interestingly, despite being closest to the Sun, Mercury is not the hottest planet—that title goes to Venus due to its thick atmosphere.
Surprisingly, Mercury has a weak magnetic field, suggesting it has a partially molten core.
Overall, Mercury is a fascinating world of extremes—scorching heat, freezing cold, and a heavily cratered landscape
Hope you learnt a little today.