Easy
Mars
Mercury
Earth
Venus
Pluto
Saturn
Investigating The Moon
Jupiter
Neptune
Uranus
Medium
The Sun
The Hubble Space telescope
The Space race from 1957 to 1975
Constellations
The Northern Lights
Galaxies
How stars were used to navigate in the olden days
The European Space Agency
The Asteroid belt
Halley’s comet
The possibility of life on other planets
Space travel
Hard
Copernicus, Galileo and the conflict of science and religion
The history of space investigation
Black Holes
The life of stars
Technology invented for space exploration that is now used in everyday life
Superstitions related to the stars
The science of space travel in movies
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