In 2023 March 20 is the date of the March equinox and is also the first day of spring (or the first day of autumn if you're one of my readers in the Southern Hemisphere). In this post I’ll talk about the equinoxes and discuss the commonly held, but not quite correct, view, that they… Continue reading The equinox 20 March 2023
Christmas Day January 7th?
Happy New Year to my readers and followers and I hope you have successful 2023. Although for most us the Christmas and New year festivities are over, for followers of the Orthodox form of Christianity, Christmas is yet to come, as they don't celebrate their Christmas until January 7 The reasons for celebrating Christmas 13… Continue reading Christmas Day January 7th?
No more leap seconds
With all the events going on in the world it passed almost unnoticed that a decision was made recently to abolish the leap second. The resolution was made on 18 November 2022 during a meeting held in Paris held by the International Bureau of Weights and Measures. What is a leap second? The length of… Continue reading No more leap seconds
Frank Drake and the Drake equation
I was saddened to find out about the recent death, at the age of 92, of Frank Drake, one of the pioneers of SETI. One of the things he is most famous for is the equation bearing his name which estimates the number of intelligent civilisations in our galaxy, the Drake equation. As a tribute… Continue reading Frank Drake and the Drake equation
Fake Astronomical Images
A friend of mine, the keen amateur astronomer Colin Henshaw, brought the following photograph to my attention. It appears to show the Moon rising over Mossel Bay in South Africa. Although it was passed off as a genuine image, in fact it must be a fake. If you study the Moon, it is how it… Continue reading Fake Astronomical Images