Sunday, 29 May 2016
The Somerset Space Walk
The main canal-side car park is located close to the northern (i.e. Bridgwater-side) model of Mars. I walked from there past Earth, Venus and Mercury to the Sun, and then past another Mercury, Venus and Earth to the Taunton-side Mars. That involves a total distance of just 860 metres. I then walked on another kilometre to Jupiter, before returning to the car and driving into Taunton, where I “finished” the trail at Pluto, 11.3 km from the Sun (the model dates from 1997, when Pluto was still counted as one of the planets). My photos above show the six planets I visited on the Taunton side of the Sun.
The model really does put “astronomical scales” into perspective. The picture below shows the relatively huge model of the Sun, with the hundred-times-smaller model of the Earth in the inset. The latter is a stainless steel sphere approximately 25 mm in diameter. On that scale, the International Space Station would be a mere 0.75 mm above the surface of the sphere. The Moon, which is the furthest anyone has travelled, would be just a metre away. The nearest star outside the Solar System, Alpha Centauri, would be about 77,000 km away – almost six times the diameter of the real Earth!
Paul Jackson’s blog several years ago (see also Paul’s own post about the GHQ Line, which served a similar function further East). In the short distance I walked last week, I saw no fewer than three gun emplacements, all to different designs: