Which planet is home to Ganymede, the biggest moon in the solar system?
Jupiter Click to see the answer
Shooting star is another name for which object?
Meteor
NASA's Cassini space probe orbited which planet?
Saturn
What kind of hole is created when a star collapses?
Black
What is the name for a small body orbiting the sun, made of rock or metal?
Asteroid
Which planet do astronomers sometimes call a failed star?
Jupiter
Which country launched the Marsnik 1 space probe in 1960?
USSR Click to see the answer
Triton is the moon of which planet?
Neptune
Which planet has a moon called Triton?
Neptune
In which century was the first asteroid discovered?
19th
Out of 39 missions to Mars, how many were successful?
16
Which is the smallest planet in the Solar System?
Mercury
What is the term for any man-made object orbiting Earth?
Space Junk
Which planet has moons called Phobos and Deimos?
Mars
Triton is the largest moon of which planet?
Neptune
What is the name for a rocky fragment left over from the beginning of the solar system?
Asteroid Click to see the answer
How many times bigger than Earth is the Sun?
110
Which celestial body did the Romans call Luna?
Moon
Venus has how many moons?
0
The sun is composed of hydrogen and which other gas?
Helium
How many planets in our solar system are classed as gas giants?
2
Which planet is known as 'the ringed planet'?
Saturn
The sun accounts for what percentage of the mass of the solar system?
99.80%
92.1% of the sun is made up of which gas?
Hydrogen
In which year was Uranus discovered?
1781
What is the name for snowballs of frozen gases, rocks and dust?
Comet
In which year was Pluto reclassified as a dwarf planet?
2006
Which planet is referred to as the 'morning star'?
Venus
Which planet in the solar system has more than 75 moons?
Jupiter
How many spiral arms does our galaxy have?
4
How many terrestrial planets do we have in our solar system?
4
How many general types of galaxies are there?
3
What is the sixth planet from the Sun?
Saturn
What is the name for a cloud of dust and gas in interstellar space?
Nebula
What comes after 'Kuiper' for an area of space beyond Pluto?
Belt
The solar system planets are classed as Gas Giants and which other group?
Terrestrial
How many moons does Mars have?
2
What celestial body crashing into earth is thought to have ended the dinosaurs?
Asteroid
In total, there are how many moon orbiting planets in our solar system?
181 Click to see the answer
In which month of the year do we see the Perseid meteor shower?
August
What comes after 'Swift' in the name of a comet which is visible every 133 years?
Tuttle
What is the second densest planet in the solar system after Earth?
Mercury
The Shoemaker-Levy 9 comet collapsed into which planet in 1994?
Jupiter
What comes after 'Kuiper' in the name of a solar system feature near Neptune?
Belt
What is the fifth planet from the sun?
Jupiter Click to see the answer
Which planet was discovered by Jean Joseph Le Verrier?
Neptune
Pan's Corridor is a feature of the rings around which planet?
Saturn
Oberon, Titania and Miranda are moons of which planet?
Uranus
What is the name of the NASA mission to explore Pluto and the Kuiper Belt?
New Horizons
The Akatsuki mission to explore weather on Venus was launched by which country?
Japan
It takes how many minutes for light from the Sun to reach Earth?
8 minutes
What is the maximom number of solar eclipses which we can see in a year?
5
Curiosity is the name of the space rover exploring the surface of which planet?
Mars
The Vredefort crater, left over from a meteroite inpact, is in which country?
South Africa Click to see the answer
What is the name for a planet outside the solar system?
Exoplanet
How many planets can be seen from Earth with the naked eye?
5
What is the name for areas which appear dark on the surface of the sun?
Sunspots
Which planet would you find 0.9 billion miles from the Sun?
Saturn
The highest mountain in the solar system, a volcano called Olympus Mons, is on which planet?
Mars
What is the name for one celestial body passing in front of another?
Transit
Comets are made from sand, ice and which gas?
Carbon Dioxide
Total solar eclipses happen on average every how many months?
18 months
Viking Lander, the first spacecraft to land on Mars, touched down in which year?
1976
In 2006, Pluto was reclassified as a dwarf planet along with how many other objects?
3
Saturn is mainly made from hydrogen and which other gas?
Helium
Which country launched the Hubble Space Telescope?
United States
What is the name of the theoretical shell of icy objects beyond the Kuiper Belt?
Oort Cloud
What comes after 'solar' for the name of a burst of violent activity on the surface of the sun?
Flare
How many different phases of the moon are there?
8
How many dwarf planets are in our solar system?
5
What comes after 'Oort' in the name of a very distant region of the solar system?
Cloud
How many of the planets of the solar system are classed as rocky?
4
Which planet is named after the Roman goddess of love and beauty?
Venus Click to see the answer
What is the coldest planet in the solar system?
Uranus
Halley's comet will next pass Earth in which year?
2061
Uranus takes how many Earth days to orbit the sun?
84
Which planet in the solar system has 67 confirmed and named moons?
Jupiter
The Hubble Space Telescope orbits how many miles above Earth?
350 miles
William Herschel discovered Uranus in which century?
18th Click to see the answer
What is the name of the theoretical boundary at the edge of the solar system?
Heliopause
What is the second smallest planet in the solar system after Mercury?
Mars
NASA's Mars Curiosity Rover was launched in which year?
2011
Cassini-Huygens was a space mission launched by NASA, the European Space Agency, and which country?
Italy
Which is the fastest spinning planet in the solar system?
Jupiter
In which year was the Hubble Space Telescope launched?
1990
The moon has what proportion of the gravity on earth?
Sixth
The Kuiper Belt lies beyond the orbit of which planet?
Neptune
The hottest planet in the solar system has a surface temperature of how many centigrade?
450c
In which decade did Halley's comet last pass Earth?
1980s
A year on Mercury is equivalent to how many days on Earth?
88
How many days does it take the moon to orbit the earth?
27.3
Jupiter's Great Red Spot was first identfied in which year?
1665
Astronomer Johann Bode, who discovered Uranus, came from which country?
Germany
Which was the first planet to be discovered by scientists?
Uranus
The asteroid belt lies between Mars and which planet?
Jupiter