-Neptune's summer is 40 years long.

-Scientists think there is gold on Mars, Venus, and Mercury.

-Alan Shepard used a six iron on the moon.

-Wind speeds on Neptune can reach 1,500 mph.

-The average surface temperatue of Venus is 864 degrees F, making it the hottest of any of the planets in our solar system.

-The sun will grow many times its size in about 5.5 billion years.

-If you weight 120 pounds on Earth, you'll weigh about 20 pounds on the moon.