The Solar System

1. The Solar System

2. Mercury • First planet from the sun. • Mercury has no moons. • Mercury has no rings. • Mercury has 88 days in a year. • One day on Mercury is 59 days on Earth.

3. Mercury • Mercury sometimes is brighter than any other star. • Its average distance from the sun is 36 million miles. • Mercury is an almost airless planet. • All the facts about Mercury come from one probe.

4. Venus • Second planet from the sun. • Venus has no moons. • Venus has no rings. • One year is 224.7. • One day is 243 Earth days.

5. Venus • Venus is the brightest object in the night sky after the moon. • Because it’s so brilliant, it is sometimes called the Evening Star or the Morning Star. • Its average distance from the sun is 68 million miles. • Venus is sometimes called earth’s sister. • The surface of Venus is incredibly hot as much as 900° F day & night.

6. Earth • Third planet from the sun. • Earth has 1 moon. • Earth has no rings. • One year is 365.3. • One day is 24 hours.

7. Earth • Many years ago people thought Earth was flat. • Earth is about 93 million miles from the sun. • Earth’s atmosphere is made of gases & bits of dust & water. • Earth is like a giant magnet. • The lands on earth’s surface are always changing .

8. Mars • Fourth planet from the sun. • Mars has 2 moons. • Mars has no rings. • One year has 687 days. • One day has 24.5 Earth hours.

9. Mars • Mars is more than 140 million miles from the sun. • It’s 4,218 miles across. • Mars was very hot inside. • Mars is a dusty planet. • Millions of years ago when it was a young planet it may even have had oceans.

10. Jupiter • Fifth planet from the sun. • At least 16 moons. • It has 2 rings. • One year is 4,280 days. • It takes 9.8 hours to spin on its axis.

11. Jupiter • It’s about 480 million miles from the sun. • One mystery on Jupiter is the Great Red Spot. • The temperature here is very cold. • The planet is very hot in its center. • If you weigh 100lb on Earth you would weigh 264lb on Jupiter.

12. Saturn • 6th planet from the sun. • It has at least 17 moons. • It has 8 rings. • It takes 12,688.5 days for one year. • It takes 10.7 Earth days to spin once on its axis.

13. Saturn • It’s about 890 million miles from the sun. • It takes about thirty years to orbit around the sun. • If you could find an ocean large enough Saturn would float on the water. • There are so many rings that they look like the grooves in a phonographs record.

14. Uranus • 7th planet from the sun. • It has at least 15 moons. • It has 10 rings. • It takes 30,660 years to circle the sun. • One day is17 hours long.

15. Uranus • It’s about one & three quarters billion miles from the sun. • Uranus lies on its side. • Thick blue-green clouds blow across the surface at 200 miles per hour. • Temperatures on the top of the clouds are over 350۫° F. • Astronomers once thought Uranus had 9 rings but it had 10 rings.

16. Neptune • 8th planet from the sun. • It has 8 moons. • It has 4 rings. • One year is 59,355 days. • One day is 16 hours.

17. Neptune • It’s about 2.8 billion miles from the sun. • South of the Great Dark Spot is a bright white cloud the scientists have nicknamed “Scooter”. • The inner two thirds of the planet is 2 mixtures of hydrogen, helium, ammonia, & water. • Before Voyager 2, scientist thought it only had 2 moons Triton & Nereid.