Earth is the only planet in the Universe known to support life as we know it.
On the walk it is three-quarters of the way between green light poles 3 and 4 (either clockwise or anti-clockwise from the start). The sign is at pole 4.
We are 149 million km from the Sun and light from the Sun takes 8 minutes and 18 seconds to reach us.
The next planet, Mars, is two light poles away.