Question 1

What is the universe?

Accepted Answer

The universe is everything we can touch, see, feel, and know. It includes all the stars, planets, galaxies, and even space itself.

Question 2

How big is the universe?

Accepted Answer

The universe is so big that we can't really measure it! It's always getting bigger, and it has no end that we know of.

Question 3

What is a galaxy?

Accepted Answer

A galaxy is a huge group of stars, planets, gas, and dust all held together by gravity. Our planet Earth is in a galaxy called the Milky Way.

Question 4

How many stars are in the Milky Way?

Accepted Answer

There are about 100 to 400 billion stars in the Milky Way. That's a really big number!

Question 5

What is a star?

Accepted Answer

A star is a big ball of gas that gives off light and heat. The sun is a star, and it helps keep us warm on Earth.

Question 6

Why do stars twinkle?

Accepted Answer

Stars twinkle because their light has to pass through the Earth's atmosphere. The air moves and bends the light, making stars seem to twinkle.

Question 7

What is a planet?

Accepted Answer

A planet is a large, round object that orbits, or goes around, a star. Earth is one of these, and it orbits the sun.

Question 8

How many planets are in our solar system?

Accepted Answer

There are eight planets in our solar system. They all orbit the sun, just like Earth does.

Question 9

What is a black hole?

Accepted Answer

A black hole is a spot in space where gravity is so strong that even light can't escape it. If you get too close, it will pull you in!

Question 10

How do we know about space if we've never been there?

Accepted Answer

We use special tools like telescopes and space probes to look and learn about space. Astronomers, who study space, help us discover new things.

Question 11

What is a comet?

Accepted Answer

A comet is a big, dirty snowball made of ice and dust. When it gets close to the sun, it looks like it has a tail made of glowing gas!

Question 12

What is the moon?

Accepted Answer

The moon is a big rock that orbits Earth. It causes the ocean's tides and lights up the night sky with its glow.

Question 13

Why is space dark?

Accepted Answer

Space is dark because there's nothing to reflect light. It's mostly empty, so we only see light where stars and other bright objects are.

Question 14

What is a supernova?

Accepted Answer

A supernova is an exploding star. When some stars run out of fuel, they explode in a burst of light and become super bright for a short time.

Question 15

What makes up the universe?

Accepted Answer

The universe is made of many things like stars, planets, gas, dust, and lots of space. Everything around us, including us, is part of the universe.

Question 16

Can we ever reach the end of the universe?

Accepted Answer

No, we can't reach the end of the universe because it's constantly expanding. The universe doesn't have edges like a table or a book.

Question 17

What is the sun made of?

Accepted Answer

The sun is mainly made of hydrogen and helium, which are types of gases. It creates energy by smashing these gases together, which gives us light and warmth.

Question 18

What is gravity?

Accepted Answer

Gravity is a force that pulls objects toward each other. It's why we stay on the ground and why the planets orbit the sun.

Question 19

Do aliens exist?

Accepted Answer

We haven't found any aliens yet, but scientists are looking for signs of life in space. The universe is so big, there might be life out there!

Question 20

What is a shooting star?

Accepted Answer

A shooting star is actually a small rock or dust from space that burns up when it hits Earth's atmosphere. It makes a bright streak of light in the sky.

The Universe and Its Cosmic Wonders - 20 FAQs Explained Simply