Mercury is the smallest planet in our solar system and the closest one to the sun. It?s so hot that people would burn up if they tried to ...
Scientists have spent a lot of time exploring Mars, so it?s one of the planets we know the most about. They believe it used to look a lot ...
Saturn is easily recognized by its large rings, which can be seen from Earth with a telescope. These rings look solid but are actually ...
Grab your parka, and let?s visit Uranus! This planet is the coldest one in our solar system; its atmosphere is made up of clouds of ice. ...
Pluto is too big to be an asteroid and too small to be a planet, so scientists call it a dwarf planet. It?s so far away from the sun that ...
Did you know Jupiter is so big that all the other planets could fit inside it? You wouldn?t want to travel there, though! Jupiter?s ...
The sun is the closest star to Earth. Not only does it give us warmth and light, its light becomes food for plants, helping them grow. ...
Without our moon, Earth would be a very different place. Readers discover fun facts about our closest neighbor, including the way it ...
We think of space as being empty, but that isn?t quite true. In addition to stars, planets, and moons, there are asteroids and comets. ...