The Milky Way!!
- It is the closest planet to the sun at a distance of about 58 million km
- 2,439.7 km- Radius
- Mercury is a solid and it has no rings and no planets
- Mercury goes around the sun once every 88 Earth days.
- One day on Mercury lasts 59 Earth days.
- Soft Grey
- 800 degrees Fahrenheit during the day and drop to -290 degrees Fahrenheit at night
- 5.427 g/cm3
- The Mariner 10 and MESSENGER are the Mercury missions
- Venus is the second closest planet to the sun at a distance of about 108 million km
- 6,051.8 km- Radius
- A terrestrial planet with no moons or rings
- One day on Venus lasts as long as 243 Earth days.
- Venus makes a complete orbit around the sun in 225 Earth days.
- Extreme high temperatures of almost 480 degrees Celsius
- 5.243 g/cm3
- The Akatsuki, Venus Express, Cassini, Galileo, Magellan, Vega 2, and Vega 1 are the Venus missions
- Mars is the fourth planet from the sun at a distance of about 228 million km
- 3,389.5 km- Radius
- One day on Mars takes just a little over 24 hours
- Mars makes a complete orbit around the sun in 687 Earth days.
- Red/ Orange
- -153 to +20 °C
- 3.934 g/cm3
- The MAVEN, MOM, MSL / Curiosity, Phobos-Grunt, Yinghuo-1, Phoenix, Mars Recon Orbiter, and Mars Exploration Rovers are the Mars Missions
- Jupiter is the fifth planet from the sun at a distance of about 778 million km
- 69,911 km- Radius
- Jupiter is a gas-giant planet
- Jupiter has 50 known moons, with an additional 17 moons awaiting confirmation of their discovery -- that is a total of 67 moons.
- Jupiter has a faint ring system
- Jupiter makes a complete orbit around the sun in about 12 Earth years
- One day on Jupiter takes about 10 hours
- Blue/ Gold
- -148 °C
- 1.326 g/cm3
- Juno, New Horizons, Cassini, Ulysses, Galileo, Voyager 1, Voyager 2, and Pioneer 11 are the most recent Jupiter missions
The planet Jupiter's four largest moons are called the Galilean satellites, after Italian astronomer Galileo Galilei, who observed them in 1610. These large moons, named Io, Europa, Ganymede, and Callisto.
Io is the most volcanically active body in the solar system. Io's surface is covered by sulfur in different colorful forms. As Io travels in its slightly elliptical orbit, Jupiter's immense gravity causes "tides" in the solid surface that rise 100 m (300 feet) high on Io, generating enough heat for volcanic activity and to drive off any water.
Europa's surface is mostly water ice, and there is evidence that it may be covering an ocean of water or slushy ice beneath. Europa is thought to have twice as much water as Earth. This moon intrigues astrobiologists because of its potential for having a "habitable zone." Life forms have been found thriving near subterranean volcanoes on Earth and in other extreme locations that may be analogues to what may exist on Europa.
Ganymede is the largest moon in the solar system (larger than the planet Mercury), and is the only moon known to have its own internally generated magnetic field.
Callisto's surface is extremely heavily cratered and ancient -- a visible record of events from the early history of the solar system. However, the very few small craters on Callisto indicate a small degree of current surface activity.
- Saturn is the sixth planet from the sun at a distance of about 1.4 billion km
- 58,232 km- Radius
- Saturn is a gas-giant planet
- Saturn has 53 known moons with 7 rings
- Saturn makes a complete orbit around the sun in 29 Earth years
- One day on Saturn takes 10.7 hours
- -178 °C
- 0.687 g/cm3
- Cassini, Huygens, Voyager 1, Voyager 2, and Pioneer 11 are the 5 Saturn missions
- Uranus is the seventh planet from the sun at a distance of about 2.9 billion km
- 25,362 km- Radius
- Uranus is a gas-giant planet
- Uranus has 27 moons
- Uranus has faint rings, the inner rings are narrow and dark and the outer rings are brightly colored
- Uranus makes a complete orbit around the sun in about 84 Earth years
- One day on Uranus takes about 17 hours
- -216 °C
- 1.270 g/cm3
- Voyager 2 is the only spacecraft to have visited Uranus.
- Neptune is the eighth planet from the sun at a distance of about 4.5 billion km
- 24,622 km- Radius
- Neptune is a gas-giant planet
- Neptune has 13 confirmed moons
- Neptune has six rings
- Neptune makes a complete orbit around the sun in about 165 Earth years
- One day on Neptune takes about 16 hours
- -214 °C
- 1.638 g/cm3
- Voyager 2 is the only spacecraft to have visited Neptune.