Show:
Solar System
Stars
Space Exploration
Moons
The Universe
100
Which planet is the largest in our Solar System?
Jupiter
100
What is the closest star to Earth?
The Sun
100
In what year did humans first land on the Moon?
1969
100
What is the commonly used name for Earth's natural satellite?
The Moon
100
What galaxy contains our Solar System?
The Milky Way
200
Which planet is commonly known as the Red Planet?
Mars
200
Which colour generally indicates the hottest stars?

Red, Yellow or Blue?
Blue
200
Who became the first human to travel into space in 1961?
Yuri Gagarin
200
What is the largest moon in the Solar System?
Ganymede
(A moon of Jupiter)
200
A light-year is a measurement of what?

A) Time
B) Distance
C) Speed
D) Brightness
B) Distance
300
Which planet is famous for its large and easily visible ring system?
Saturn
300
What is the name of the enormous explosion that can occur when a massive star reaches the end of its life?
Supernova
300
Who became the first woman in space in 1963?
Valentina Tereshkova
300
Which moon of Saturn has a thick atmosphere and lakes of liquid methane and ethane?
Titan
300
What is the closest large galaxy to the Milky Way?
The Andromeda Galaxy
400
Which planet has the highest average surface temperature?
Venus
400
What extremely dense object can remain after a massive star explodes, consisting mostly of tightly packed neutrons?
Neutron star
400
Which spacecraft, launched in 1977, is now the most distant human-made object from Earth?
Voyager 1
400
Which icy moon of Jupiter is believed to have a huge ocean of liquid water beneath its surface?
Europa
400
What is the boundary around a black hole beyond which nothing, including light, can escape?
The event horizon
500
Which dwarf planet was discovered in 1930 and was once considered the ninth planet?
Pluto
500
What process inside stars combines light atomic nuclei and releases enormous amounts of energy?
Nuclear fusion
500
Which Soviet cosmonaut performed the world's first spacewalk in 1965?
Alexei Leonov
500
Which large moon of Neptune orbits its planet in the opposite direction to Neptune's rotation?
Triton
500
What faint radiation found throughout the Universe is considered leftover radiation from the early Universe after the Big Bang?
Cosmic Microwave Background Radiation
(CMB)