Space Trivia

## Sun

1. The Sun is the biggest known object in the Solar System, taking 98% of its mass.
2. The Sun does not have a surface, because it is a star.
3. The Sun is the only star in the Solar System.

## Mercury

1. Mercury has the biggest temperature range (between -300 F and 800 F)
2. Although Mercury is the closest to the Sun, it is not the hottest planet.
3. Mercury, along with Venus, Mars, Jupiter, and Saturn can be seen with the naked eye.
4. Mercury, along with Venus, doesn't have a moon.

## Venus

1. Venus is the hottest planet, able to reach temperatures as high as 900 F.
2. Venus' atmosphere is 100 times denser than Earth's atmosphere.
3. When Venus was young-aged, it possibly had oceans that went to 2 kilometers deep, are today vanished due to the intense heat.
4. Venus is the second-brightest light in the night sky, right after the Moon.
5. Venus is the brightest of all planets in the night sky. Mercury, Mars, Jupiter and Saturn are able to be seen with the naked eye.
6. Venus, along with Mercury, do not have one or more moons.

## Earth

1. Earth is the biggest terrestrial planet in the Solar System, but not in the universe.
2. Earth is the only terrestrial planet with solar eclipses.
3. Earth is the only body in the universe to have known life.
4. Earth is the fifth-biggest planet, after all four gas giants.

## Mars

1. Olympus Mons is three times taller than Mount Everest, the highest mountain on Earth.
2. Even more impressive, Olympus Mons sticks above the clouds of Mars.
3. Mars, along with Mercury, Venus, Jupiter, and Saturn can be seen without any special tools from Earth.

## Jupiter

1. Jupiter is the biggest planet in the Solar System, at over 142,000 km in diameter, but not in the universe.
2. Jupiter is the second-brightest planet in the sky, after Venus.
3. Those two planets, along with Mercury, Mars, and Saturn may be seen in the night sky and have been known for centuries.
4. Jupiter has the most moons circling it, at 69 moons
5. Jupiter, along with Saturn, Uranus, and Neptune, have rings.

## Saturn

1. Saturn is the second-biggest planet in the Solar System.
2. Saturn, along with Mercury, Venus, Mars, and Jupiter are seeable in the night sky, so they have been known for thousands of years.
3. Saturn is the furthest planet to be bright enough to be seen in the night sky.
4. Even though, Saturn's rings were not discovered until 1610.

## Uranus

1. Uranus is the first planet to be discovered and unknown to the ancients, in 1781.
2. Uranus is the only gas giant with all its moons to have official names.
3. Uranus may reach the coldest temperatures today.
4. Uranus is difficult to see, as it is too far and too small away. However, it looks like a faint star if you have good vision.

## Neptune

1. Neptune is the first planet that cannot be seen with even good vision. Neptune requires at least binoculars.
2. Neptune is the windiest planet known in the Solar System.
3. Neptune has the smallest number of moons.
4. Even though, 1 moon hasn't been given an official name yet.

## Pluto

1. Pluto has the most moons for a dwarf planet, which are five (Charon, Nix, Hydra, Kerberos, Styx).
2. Pluto was classified as a planet until 2006, because it was too small.
3. Pluto crosses Neptune's orbit, but will never collide.

## Ceres

1. Ceres is the only dwarf planet without any moons.