From Anthony Burns
“Tales from an alternate Earth” (22 January, p 38) made fascinating reading, especially the scenario of our planet having two moons. One consequence of this, not mentioned in the article, is the variety of different eclipses that could occur. As well as the usual solar and lunar eclipses, we might be treated to spectacular displays in which one moon occults the other, or casts its shadow on it.
Banbury, Oxfordshire, UK
