Tail Gallery

Hale-Bopp comet

Hale-Bopp. Artwork of the comet Hale-Bopp above an ocean shore. Hale-Bopp was one of the brightest comets of the 20th century, and was seen for much of early 1997. A comet is a lump of ice and rock. Its tail is formed as its ice evaporates as it nears the Sun. The tail always points away from the Sun, and may stretch for millions of kilometres

© CHRIS BUTLER/SCIENCE PHOTO LIBRARY

British Mark IV tank with Tadpole Tail, WW1

British Mark IV tank with Tadpole Tail, introduced in 1917 and used during the latter part of the First World War. The Tadpole Tail was an elongation of the rear horns to increase trench-crossing power, necessitated by the wider trenches of the Hindenburg Line. Date: 1917-1918

© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10528762

1917, 1st, British, Crossing, Elongation, Great, Hindenburg, Horns, Increase, Introduced, Iv, Long, Longer, Mark, Power, Rear, Tadpole, Tail, Tank, Tanks, Transport, Trench, Trenches, War, War Time, Wider, World, Ww, Ww 1

Halleys comet, 19th Century artwork

Halley's comet, 19th Century artwork. 1835 woodcut print depicting the 1835 appearance of Halley's comet. Halley's Comet is the only naked-eye comet certain to return within a human lifetime (every 75 years or so). It derives its name from the English astronomer Edmond Halley (1656-1742) who computed its orbit

© DETLEV VAN RAVENSWAAY/SCIENCE PHOTO LIBRARY