Here is a puzzle to amuse you. It’s a smallish question on which you might like to test your math. Continue reading “The Speed of the Barycenter”
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Tri-Saros
The saros, the famous rhythm of similar eclipses a little over 18 years apart, is a fascinating subject with almost endless ramifications, explored Continue reading “Tri-Saros”
Spring Astronomy Day
will be on April 29. Here is how the evening sky will look Continue reading “Spring Astronomy Day”
Ramamatateriathonmobileburger
The Marathon has ended, but its ending (-athon) goes on and on.
Quote-a-thon; crave-a-thon Continue reading “Ramamatateriathonmobileburger”
Marathonids
Like a meteor shower, the London Marathon returns Continue reading “Marathonids”
Lyrids before Moonrise
The Lyrid meteors come around again.
Comets, and beams to them
Two of the comets that return to us this year come to their Continue reading “Comets, and beams to them”
Tall Ships
The five-day festival of the Tall Ships was announced by a volley of fireworks Continue reading “Tall Ships”
Chagos
Amnesty International held a British national conference at Nottingham this past weekend; I didn’t go, but Tilly did. Continue reading “Chagos”
Palm Sunday
St. Paul’s Cathedral is in the dense heart of the City of London, but since 2000 there has been a bracingly open way to approach it: along the Thames in one of the river buses, then, from the Globe Theatre on the south bank, across the Millennium Footbridge.
