More from BBC Sky at Night

BBC Sky at Night3 min read
Sailing On A Laser Beam
Light sails are a mainstay (if you'll excuse the nautical pun) of science fiction. Arthur C Clarke's classic short story Sunjammer describes a space yachting race, The Mote in God's Eye by Larry Niven and Jerry Pournelle has an alien probe propelled
BBC Sky at Night5 min read
Sky-Watcher EQ-AL55i Pro Wi-Fi mount
∙ Price £779 ∙ Mount type Equatorial with Go-To ∙ Load capacity 10kg ∙ Slew speed Up to 4° per second ∙ Power input 12V DC ∙ Autoguider port ST4 ∙ Protocols SynScan, ASCOM via Wi-Fi or USB ∙ Weight 14.8kg ∙ Supplier Optical Vision Ltd ∙ Email info@op
BBC Sky at Night2 min read
When Haydn Met The Herschels
It is 1792 and, with the French Revolution deep in its third year, court martial proceedings begin in Plymouth for the instigators of the infamous mutiny on the Bounty. King George III is on the British throne, William Pitt the Younger commands the H

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