I get asked a lot of questions about our planets and space from our readers. It would be great if I could answer all of them but sometimes it’s just impossible. Below I’ve answered some of the frequently asked questions, I hope you enjoy reading them.


What is a black hole?

What is a comet

How long is a day on other planets

How long is a day on Mercury

What is the largest Star

How big is the Earth

What is the difference between asteroids and comets?

Why are there black holes in the middle of galaxies?

What is the closest planet to Saturn?

What color is Venus?

What is a constellation?

Why is the earth round?

Why does the earth spin?

What was the first animal in space?

What is the hottest planet in the solar system?

What is Saturn made of?

What is the smallest planet in the solar system?

Why do stars die?

Why is Mars Red?

Why Mars is called the Red Planet

Why does Saturn have rings?

Why isn’t the asteroid belt a planet?

Why are astronauts weightless in space?

Why is the center of the earth hot?

Why are stars different colors?

Why are Saturn’s rings disappearing?

Why dying stars might be a good place to look for life

Why doesn’t earth have more water?

Why are distant galaxies moving away faster?

Why does the Man in the Moon face the earth?

Why is Mars so dry?

Why can we see the moon during the day?

Why is the Moon Leaving Us?

Why does the moon shine?

Why are planets round?

Why do some scientists consider Pluto to not be a planet?

Why are there seasons?

Why the sky is blue

Why is space black?

Why can’t we launch garbage into space?

Why do stars shine?

Why is the sun hot?

Why is the sunset red?

How Fast Does the Earth Rotate?

What is the Distance to the Moon?

How Many Moons Does Mars Have?

How Many Moons Does Jupiter Have?

How Many Moons Does Neptune Have?

Why is Pluto No Longer a Planet?

How Hot is the Sun?

How Many Stars are in the Solar System?

How Long is a Year on Uranus?

How Long Does it Take to Get to Mars?

How Hot is Venus?

How Long Does it Take to get to the Moon?

How Long Does it Take Uranus to Orbit the Sun?

Why Does Jupiter Have the Great Red Spot?

Why Do Stars Twinkle?