| Become a member of Enchanted Learning. Site subscriptions last 12 months. Click here for more information on site membership. |
|||
| As a thank-you bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages. | |||
Mercury is the closest planet to the Sun in our Solar System. It has no moons. This small, rocky planet has almost no atmosphere. Mercury has a very elliptical orbit and a huge range in temperature. During the long daytime (which lasts 88 Earth days or an entire Mercurian year), the temperature is hotter than an oven; during the long night (the same length), the temperature is colder than a freezer.
|