Robert hooke microscope

When to use this chart 1 December at 00:00 UT 15 December at 23:00 UT 31 December at 22:00 UT On other dates, stars will be in slightly different positions because of Earth’s orbital motion. Stars tha

As anyone who reads these pages knows, history has become political – especially discussions about our imperial past. So The Truth About Empire (Hurst), a collection of essays edited by Alan Lester, i

In one of the coldest winters on record, German forces mounted a desperate final roll of the dice to drive the Allies back. Cut off and encircled by the enemy, one city and its defenders held the line for over a week

hen giving talks on UFOs I’m sometimes asked which single event offers the best evidence for intelligent alien life. Until the recent preprint report from the Planetary Habitability Laboratory conclud

Q My grandfather, Thomas Gilbert Holman, was born in 1869/70. The earliest record I have for him is as a ‘visitor’ in the household of Walter Fitch, in Kelvedon, Essex, in the 1911 census. He is singl

Many birds have fabulous plumage to attract mates or send warning messages. Some of the colours in their feathers are produced by microscopic structures on the feather surface that absorb and reflect