John F. Allen's Blog at

9th February 2014


Filed under: Uncategorized — John Allen @ 12:58 pm

The subject of the header photograph; you; me; the remarkable people who built and sent the camera; all our homes, history, hopes, fears, aspirations:–

Bright ‘Evening Star’ Seen from Mars is Earth

Fig. 1 (do view full-screen) includes the evening horizon, giving depth from perspective. Breathtaking. Wish Carl Sagan could have seen this.

“The distance between Earth and Mars when Curiosity took the photo was about 99 million miles (160 million kilometres)”.


8th February 2014

First things first

Filed under: Uncategorized — John Allen @ 7:49 pm

Prompted by a post on Robinince’s Blog I thought it’s about time I tried this, too.

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