GK Questions and Answers on Space and Solar System

The Universe is a strange place filled with surprise, beauty, and many secrets and unanswered questions.

Most of us can understand the concept of stars and planets, planetary systems and distant moons, and swirling galaxies served with wide stardust and bright nebulae.

But, how much do you know about your Space and our galaxies? Take this quiz to learn some amazing and interesting truths about Space and the solar system.

It will help you prepare for several competitive examinations and enhance your knowledge.

Then, explore your knowledge about the solar system by solving the questions and answers provided below in the article.

GK Questions and Answers on Space and Solar System

Which Planet is famous for its big red Spot?


What is Saturn most known for?

The bright, beautiful rings circle its equator.

What is Saturn’s nickname?

Ringed Planet

What Planet is famous for its beautiful rings?


What is Jupiter known for?

Jupiter is known for its stripes and large red Spot.

What is Neptune famous for?

Neptune is the only Planet in our solar system not visible to the naked eye.

Which Planet is called a Green planet?

Uranus is a gas planet with many methane gases mixed in with its mainly hydrogen and helium atmosphere. This methane gas gives Uranus a greenish-blue color.

What was Uranus’ first name?

“the Georgium Sidus” (the Georgian Planet) in honor of King George III of England.

What Colour is Saturn?

Hazy Yellow and Brown

How many planets are in the world?

Eight Planets

What is Mars’s nickname?

Mars is known as the Red Planet.

What is the big orange circle on Jupiter?

Jupiter’s Great Red Spot (GRS) is the largest atmospheric vortex in the Solar System.

Which is the fastest Planet?

Mercury is the smallest and fastest Planet in the solar system. It is also the closest Planet to the Sun.

What is on Planet Saturn?

Saturn is made mostly of hydrogen and helium

Which is the Pink Planet?

Named GJ 504b, the Planet is made of pink gas.

Which Planet has 21 moons?


What is the twin planet of Uranus?


Who named the planet Jupiter?

The Romans

What is the most colorful Planet?


Why is Uranus the best Planet?

Its rotation. Uranus’s equator is tilted 97.8 degrees, meaning it rotates completely on its side compared to all the other planets.

Which Planet has a life?


What is Pluto made of?

Pluto’s surface comprises frozen nitrogen, methane, and carbon monoxide ices.

What is the yellow Planet?


Which Planet is the coldest?


What Colour is Venus?

Yellow white

What is our galaxy called?

The Milky Way Galaxy

What is Earth’s nickname?

The Blue Planet

What is Venus’s nickname?

Morning and Evening Star

What Planet has 82 moons?

Saturn has 82 moons

What is the purple Planet?

The Purple Planet is a ringed Earth-like planet outside the Milky Way Galaxy.

Which Planet is very hot?


Which Planet is known as the grey Planet?


Why is Venus called Earth’s sister?

Venus and Earth are almost the same size, have about the same mass, and have a very similar composition.

Which Planet is known as a blue-green Planet?


Which Planet is the most colorful?


What planet rains diamonds?

Deep within Neptune and Uranus, it rains diamonds.

Which Planet has the shortest day?

Jupiter – It is the fastest spinning Planet in our Solar System, rotating on average once in just under 10 hours.

Which Planet is known as the Morningstar?


Who discovered the Moon?

Italian astronomer Galileo

Why is Mars red?

Because iron minerals in the Martian soil oxidize or rust, causing the soil and atmosphere to look red.

Who discovered the solar system?

Italian astronomer Galileo

Which Planet receives the most energy from the Sun?

Mercury receives the most radiation from the Sun.

What Planet gives off more energy than it receives from the Sun?

Jupiter and Saturn produce heat in their center. These two giants radiate away about twice as much energy as they receive from the Sun.

Which of these planets receives less heat from the Sun?


Which part of the Earth receives the most light?

The Equator

Which part of the Earth has more amount of energy received?

The lowest latitudes get the most energy from the Sun.

In how many days does the Moon orbit the Earth?

Once every 27.322 days, the Moon orbits the Earth. It takes approximately 27 days to rotate once on its axis.

Super Pink Moon is also known as?

Paschal Moon: This full Moon is the first Full Moon of the spring season, called the “Paschal Moon,” which helps to set the date of Easter.

How many stars are in Space?

More than 100 billion stars in the galaxy.

What color is the Milky Way?


How many galaxies are there?

Two Trillion Galaxies

What colors are black holes?

A black hole has no color.

Which is the largest galaxy?

IC 1101 is the largest galaxy.

How many black holes are there?

Ten million to a billion black holes in the Milky Way alone.

What is the largest black hole called?

The black hole at the center of the quasar TON 618. It possesses 66 billion solar masses, the most massive yet discovered.

What is the biggest known star?

The largest known star in the Universe, UY Scuti, is a variable hypergiant with a radius around 1,700 times larger than the radius of the Sun.

What is a dead galaxy?

These galaxies no longer have the necessary cold hydrogen gas to make stars.

What is the most beautiful galaxy?

NGC 2336 is the quintessential galaxy — big, beautiful, and blue

How long do stars live?

The most massive stars can burn out and explode in a supernova after only a few million years of fusion. On the other hand, a star with a mass like the Sun can continue fusing hydrogen for about 10 billion years.

Why do stars change colors?

It is because of scintillation (“Twinkling”) as the light passes through the atmosphere of the Earth.

What is the oldest star called?

Methuselah Star

What is the death of a star called?


What is the farthest star?


What is a very small star called?

Red dwarfs

What is the coldest known star?

Brown Dwarf

What is the rarest star type?

O-type star

Which star is closest to Earth?

Alpha Centauri is one of the brightest stars and is the nearest to our Solar System — only 4.3 light-years away.

What is the most beautiful star in the Universe?


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