Show:
Planets
Constellations
Astronomical Instruments
Celestial Objects
Famous Astronomers
100
This planet is the third from the Sun.
What is Earth
100
This star has allowed people to find North for thousands of years.
What is Polaris (or The North Star)
100
This device, invented in the 18th century, is used to collect light from objects in the sky so we can better understand them.
What is a telescope
100
Our planet has only one of these, whereas Jupiter has 67!
What are moons
100
This Italian astronomer is known as the Father of Astronomy and the inventor of the refracting telescope.
Who is Galileo Galilei
200
This planet is known as 'the Red Planet' due to high iron content in its soil.
What is Mars
200
These two constellations are known as the 'Big Bear' and 'Little Bear'.
What are Ursa Major and Ursa Minor
200
This type of optical telescope uses mirrors to redirect collected light and is used most often for research purposes.
What is a reflecting telescope
200
This star is the closest star to planet Earth.
What is the sun
200
This astronomer was the first to propose that the Earth orbits the Sun.
Who is Nicolaus Copernicus
300
When Galileo first observed this planet, he called it 'the planet with ears'.
What is Saturn
300
This is the name for the twelve constellations that lie along the annual path of the sun across the sky.
What is the Zodiac
300
This type of telescope uses lenses to focus collected light, and was the type of telescope used by Galileo.
What is a refracting telescope
300
These objects, often called 'shooting stars', appear when rocks from space enter our atmosphere.
What are meteors
300
This lead astronomer for the SETI project was famous for his TV show 'Cosmos'.
Who is Carl Sagan
400
There are five of this type of planet discovered in our solar system so far (Pluto is one of them).
What is a dwarf planet
400
This constellation, known as 'The Hunter' has a nebula within it called M42.
What is Orion
400
This telescope, currently orbiting Earth, is responsible for the famous Deep Field and Ultra Deep Field images.
What is the Hubble Space Telescope
400
This galaxy is the closest neighbor to our galaxy, the Milky Way.
What is Andromeda
400
This English astronomer has a comet named after him to honour his calculation of the comet's orbital period.
Who is Edmond Halley
500
This NASA telescope is currently searching for exoplanets by using the transit method.
What is Kepler
500
Patterns of stars within constellations are called this (The Big Dipper is one).
What is an asterism
500
This type of telescope can detect astronomical objects during the day, even when it's cloudy!
What is a radio telescope
500
This nebula, located in the constellation Taurus, is the remnant of a supernova that exploded in AD 1054.
What is the Crab Nebula
500
This 18th century astronomer created a catalogue of celestial objects that are today designated by the letter 'M'.
Who is Charles Messier