What are stars and star constellations?

Science

When stars are formed, gravity pulls what two things together?

Initially, a star uses which of these to keep shining and giving light?

After it runs out of hydrogen, a star becomes bigger and changes colour to...

Dwarf stars are much smaller and do not burn as brightly. Which of these colours can they NOT be?

In the order of our planets, after Mars, the next furthest planet from the sun is...

What is the hottest planet in our solar system?

Due to the large amount of carbon dioxide in its atmosphere.

Why would someone need a spacesuit in order to be able to breathe in Mars?

Which of these separates Uranus from all other planets?