Author: Chris

Size Mars is also smaller than Earth. Its diameter at the equator is 6,794 kilometres, while Earth’s is 12,756 kilometres. If you measure Mars’s diameter

Olympus Mons – Mars’ Volcano Mars has the largest volcano in the solar system – Olympus Mons. It measures some 600 kilometres across and rises nearly

As the site is updated, diagrams and visualisations get replaced with new shinier versions, I thought it would be nice to keep an archive as

Inspired by @spaceplasma’s solar system gifs I have had a go at a few of my own (completely ripped them off) for a  few of solar system objects

The Sun is large enough that approximately 1.3 million Earths could fit inside (if squashed in) or if the Earths retained their spherical shape then

How long are years on other planets? A year is defined as the time it takes a planet to complete one revolution of the Sun, for Earth

Someone, specifically @SpacePlasma, has created a fantastic set of set of gifs on their tumblr using the planet profiles from from Space Facts and they

From the launch of Sputnik 1 in 1957 through to Magion 1 in 1978 there were a huge number of successful satellite launches by a

What is a Comet? Comets are comprised of ice, rock and frozen gases like carbon monoxide left over from the formation of the solar system.

A selection of images and galleries of the planet Mars, click a picture for the full sized version and more information. Planet Mars from Space

I noticed the other day that it’s now possible to compare different planets, moons and dwarf planets when searching in Google. I’m not sure how