As seen from the Sun of the Planeten-Lehrpfad, a scale model of the solar system 1:10^9, the crowd is following P. Hombach on the way to Saturn.
We're now "at Venus" ...
... and now at the "Earth" look back at the "Sun": Since it is to the same scale as the distance between the "planets", it appears under the same angular diameter as the real Sun from the real Earth.
To demonstrate this effect, a telescope is set up ...
... to look back at the "Sun" ...
... and ahead to "Mars" ...
... which is a small marble (seen here "from Earth" with maximum focal length and close-up with full wide angle).
At Jupiter and Saturn ...
... we're done, having walked 1.5 billion kilometers in 1½ hours!
Pictures on TwitPic: 1,
2, 3,
4 and 5
Back to the starparty the previous evening or to the
next IYA events in Bonn.
All pictures by Daniel Fischer