Why is Polaris called the North Star?

What does it mean when there is a halo around the Moon?

How far is Altair from Earth?

Is Sirius part of a constellation?

Does the Earth’s axis tilt change?

Where is the asteroid belt located in the solar system?

Is the asteroid belt a former planet?

Can a supernova be seen from Earth?

What is the waxing gibbous moon?

Is the North Star the brightest star?