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