Question 1

Despite not being the closest planet to the Sun, which planet has the highest mean surface temperature due to an extreme greenhouse effect?

Accepted Answer

Venus. Venus has a dense atmosphere composed primarily of carbon dioxide, resulting in a mean surface temperature of around 737 K (464 °C; 867 °F).

Question 2

Which is the largest planet in the Solar System by both mass and volume?

Accepted Answer

Jupiter. Jupiter is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined.

Question 3

Which moon in the Solar System has a dense nitrogen-rich atmosphere and liquid hydrocarbon lakes on its surface?

Accepted Answer

Titan. Titan, Saturn's largest moon, is the only known moon with a dense atmosphere and the only celestial body other than Earth with stable surface liquid bodies.

Question 4

On which planet is Olympus Mons, the tallest known volcano in the Solar System, located?

Accepted Answer

Mars. Olympus Mons is a massive shield volcano on Mars that stands over 21 kilometers (13 miles) high.

Question 5

In what year did the International Astronomical Union (IAU) reclassify Pluto as a dwarf planet?

Accepted Answer

2006. At its General Assembly in Prague in August 2006, the IAU defined the term 'planet' for the first time, reclassifying Pluto as a dwarf planet.

Question 6

Which planet is located closest to the Sun in our Solar System?

Accepted Answer

Mercury. Mercury is the innermost planet of the Solar System, orbiting at an average distance of about 57.9 million kilometers (0.39 AU) from the Sun.

Question 7

The main asteroid belt lies primarily between the orbits of which two planets?

Accepted Answer

Mars and Jupiter. The asteroid belt is a circumstellar disc situated roughly between the orbits of Mars and Jupiter.

Question 8

The 'Great Red Spot' is a persistent, long-lived storm system located on which planet?

Accepted Answer

Jupiter. The Great Red Spot is a persistent anticyclonic storm located 22 degrees south of Jupiter's equator.

Question 9

Which celestial body is the largest object in the main asteroid belt and is classified as a dwarf planet?

Accepted Answer

Ceres. Ceres accounts for about one-third of the total mass of the asteroid belt and was classified as a dwarf planet by the IAU in 2006.

Question 10

Which large moon orbits its host planet in a retrograde direction (opposite to the planet's rotation)?

Accepted Answer

Triton. Triton is Neptune's largest moon and the only large moon in the Solar System with a retrograde orbit, suggesting it was captured from the Kuiper belt.

Question 11

Jupiter's moon Ganymede is larger in diameter than the planet Mercury.

Accepted Answer

True. Ganymede has a diameter of about 5,268 km, making it larger than Mercury (diameter of 4,879 km), though Mercury is more massive.

The solar system