Space discoveries
This astronomer proposed that Earth and the other planets orbit the Sun.
Copernicus
This star is the closest star to Earth.
Sun
This is the largest planet in our Solar System.
Jupiter
This unit measures distances in space and is the distance light travels in one year.
Light-year
A famous myth claims that the Moon is made of this dairy product.
Cheese
This scientist used a telescope to observe the four largest moons of Jupiter in 1610.
Galileo Galilei
This famous star is the brightest in the night sky and can be seen from Australia during summer.
Sirius A
This planet is known as the Red Planet.
Mars
This object has gravity so strong that not even light can escape from inside its event horizon.
Black hole
This planet is so light for its size that it would float in a giant bathtub of water.
Saturn
This scientist developed three laws that describe how planets move around the Sun.
Kepler
Stars produce light and energy through this process, where hydrogen atoms combine to form helium.
Nuclear fusion
This planet rotates on its side, making it unique among the planets in our Solar System.
Uranus
The light from distant galaxies is shifted toward the red end of the spectrum, showing that the universe is doing this.
Expanding
A teaspoon of material from this object would weigh billions of tonnes on Earth.
A neutron star
In 1969, this mission successfully landed humans on the Moon.
Apollo 11 mission
This constellation, featured on the Australian flag, is often used to find the direction south in the Southern Hemisphere (Latin name)
Crux
This planet is sometimes called Earth's "twin" because it is similar in size.
Venus
This theory states that the universe began about 13.8 billion years ago from an extremely hot, dense state.
Big Bang theory
In space, astronauts can grow up to 5 cm taller because this part of their body expands.
Spine
This space telescope, launched in 1990, has helped scientists determine the age of the universe and discover distant galaxies.
Hubble telescope
The gold in jewellery and the iron in your blood were formed in stars and spread through space by this explosive event.
Supernova
Millions of people were upset when this former planet was "demoted" in 2006.
Pluto
Scientists use this pasta-inspired term to describe how the immense gravity near a black hole could stretch an object.
Spaghettification
Astronauts who walked on the Moon said the dust smelled like this after they returned to their spacecraft.
Fireworks/gunpowder