Science Space Final Crossword

A group of planets and their moons that orbit round the sun
A vast collection of dust, gas, plenty of stars, and their solar systems.
Unit of length used to measure distance in space
Natural lights in Earth's sky, mostly seen in high-latitude regions at the darkest time of the night
When the New Moon moves between the Sun and Earth, hence blocking out the Sun's rays and casting a shadow on parts of Earth in the middle of the day.
The theory of the universe's creation
Extraterrestrial snowballs of frozen gases, rock and dust
A piece of rock or iron from outer space, usually from a meteoroid
Smallest of the gas giants and has the strongest winds of all eight planets.
Rotates in the opposite direction to most other planets, and earth's sister planet.
One of the biggest, and fastest spinning planets in our solar system.
The final stage in a small star's life after the white dwarf of the star cools down
When a star blows off its outer layers after it has run out of fuel to burn, and the outer layers of gas expand into space forming the shape of a ring or bubble
the last stage of a massive star’s life ends with this violent explosion.