91热爆

Mark is the Chairman of the Norwich Astronomical Society and has been interested in all things heavenly since he was a kid.

If you've sent in a question for him, check the sections below to see if he's answered it.

	Your questions on Jupiter
	Your questions on Mars
	Your questions on Mercury
	Your questions on the Moon
	Your questions on Neptune
	Your questions on Saturn
	Your questions on space
	Your questions on the stars and telescopes
	Your questions on Uranus and Pluto
	Your questions on Venus

Can't find the answer you want? Send your question to Mark.

On this site

Astronomy index

Ask the astronomer

International Space Station

Make a rocket

Make a sundial

New Planet

Planet Jupiter

Planet Mars

The Moon

Planets Pluto, Neptune and Uranus

Planet Saturn

Planet Venus

The Star of Bethlehem

The Sun

Your questions answered

Venus passes in front of the Sun

On bbc.co.uk





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