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
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Mars Features
Olympus Mons – Mars’ Volcano Mars has the largest volcano in the solar system – Olympus Mons. It measures some 600 kilometres across and rises nearly
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Diagram Archive
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
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Ceres & Pluto Dwarf Planet Gifs
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
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How Big is the Sun? 1.3 Million Earths Visualised
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
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Orbital Periods of the Planets
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
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Planet and Solar System Gifs
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
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An Early History of Satellites
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
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Comet ISON Facts
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.
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Pictures of Mars
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
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Comparing Planets, Moons and Dwarf Planets in Google
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
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