is for Astronomy.

Astronomy is the study of the sun, moon, stars, planets, comets, galaxies, gas, and dust.

is for Big Bang Theory.

The Big Bang Theory started it all. It is a scientific theory about how the universe started, and then made the groups of stars (called galaxies) we see today. The universe began as very hot, small, and dense, with no stars, atoms, form, or structure.

is for Constellation.

A constellation is a group of stars that forms a pattern that is traditionally named after its form. Modern scientists divide the sky into 88 constellations.

is for Dwarf.

Dwarf means small. In our solar system, we have several different dwarf planets. Pluto is one of those dwarf planets, which is why it is no longer counted as a planet in our solar system.

is for Earth.

Earth is our planet. It is the 3rd planet from the Sun. Earth was created about 4 billion years ago by leftover clouds of dust and gas that were revolving around the Sun. Earth is the only known planet in our universe that has life.

is for Full Moon.

The Full Moon is bright on nights that the Earth is between the Sun and the Moon and it isn't casting a shadow. This happens once every month.

The Moon shines because its' surface is reflecting the Sun's light.

is for Galaxy.

A galaxy is a system of millions or billions of stars, together with gas and dust, held together by gravity attraction. Our galaxy is known as the Milky Way. There are more than 100 billion galaxies in our universe.

is for Halo.

A halo is a circle of light that surrounds the sun or moon. This happens from the reflection of light by ice particles in the atmosphere.

is for Impact.

One of the main theories as to how Earth's Moon got here is from a big impact. Scientists believe that an object smashed into Earth and the Moon formed from broken pieces.

is for Jupiter.

Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is one of the four gas giants. It has a giant storm on its surface that is known as the Great Red Spot.

Jupiter is so big that over 1,300 Earths could fit inside of it.

is for Kuiper Belt.

The Kuiper Belt is a disc that surrounds our solar system that is full of comets (basically dirty snowballs). It is full of the comets that we see in our night sky. Pluto is inside of the Kuiper Belt.

is for Light.

Our Sun gives off light that gives Earth its life. Sunlight is a key factor in photosynthesis. This is the process used by plants to convert light energy into chemical energy, which acts as a plants' food.

Sunlight takes about 8.3 minutes to reach Earth from the surface of the Sun. 

is for Mercury & Mars.

Mercury is the smallest and closest planet to the Sun. It takes 88 Earth days to orbit the Sun. Mercury also has lots of craters, just like our moon.

Mars is the 4th planet from the Sun and it is the 2nd smallest planet in our solar system. Mars' surface is rocky, dusty, and dry. It takes 687 Earth days to orbit the sun.

Mars is also known as the "Red Planet."

Mercury Mars

is for Neptune.

Neptune is the 8th and farthest planet from the Sun. It is a gas giant but is becoming known as an ice giant. It is also the windiest planet in our solar system. It takes Neptune 165 Earth years to orbit the Sun once.

is for Ocean.

An ocean is a very large body of water. There are 5 major oceans on Earth: Pacific, Atlantic, Indian, Southern, and Arctic. Oceans cover more than 70 percent of the Earth's surface.

is for Phases.

There are 8 different Moon phases all together and each one happens once a month. The Moon has different phases because of it's orbit around the Earth AND the Earth's orbit around the Sun.

is for Quest.

In 1961, our president John F. Kennedy made a goal of sending American astronauts out into space to land on the moon before the decade was over. On July 16, 1969, a space shuttle by the name of Apollo 11 took off into space. On July 20, three astronauts finally stepped foot on the Moon.

They landed back on Earth on July 24th.

is for Rings.

Ring systems are paths of dust, ice, rocks, and tiny moons that follow around a major item in space. Four planets in our solar system (Saturn, Jupiter, Uranus, and Neptune) have rings that orbit around them.