Our Milky Way galaxy is a disc with a diametre of 120.000 lightyears. To understand how big that is, imagine it to be the size of Europe. The Earth and the Sun would be invisibly small on that scale and only half a millimetre apart!
Streetplanetarium, a scale model of the solar system, with the size of the municipality of Rotterdam. The Sun is an 8 metre circular bench in the city center and the eight planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, are spheres between 3 and 87 centimetres in diametre, at distances between 100 metres and 40 kilometres from the Sun.
NASA's Hubble telescope captured an uncanny image of Jupiter, displaying a huge "eye". The picture, taken in April this year was taken when the shadow of one of its numerous moons (63 of which have been identified by scientists so far) passed across a storm on its immense Great Red Spot (GRS). The Great Red Spot is an ongoing cyclone storm that has been raging since the planet was discovered around 300 years ago. The GRS has a diametre of 10,000 miles - making it bigger than planet earth.