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1001 INVENTIONS - Science Museum Exhibition

1001 Inventions Exhibition, Science Museum, London

DATES: 21 January till 25 April 2010 (temporary closure 25 Feb to 12 March 2010)
TIMES: 10am till 6pm every day. Entrance is FREE of charge.
LOCATION: Science Museum, Exhibition Road, South Kensington, London.

What is the secret behind the way we write numbers?
When did scientists first discover how we see?
Who drew the oldest surviving map showing America?
What is the hidden meaning of the Elephant Clock?

Longest Solar Eclipse of the Century

Solar eclipse of July 22, 2009

The solar eclipse that will take place on Wednesday, July 22, 2009 will be a total eclipse of the Sun. It will be the longest total solar eclipse of the 21st century, lasting at most 6 minutes, 39 seconds. It has sparked tourist interest in eastern China and India.

The eclipse is part of series 136 in the Saros cycle, like the record setting Solar eclipse of July 11, 1991. The exceptional duration is a result of the moon being near perigee, with the diameter of the moon 8% larger than the sun (magnitude 1.080).

This is second in the series of three eclipses in a month. There was a lunar eclipse on July 7 and now a solar eclipse on July 22 and then a lunar eclipse on August 6...