Two experienced long-term observers documented their first observations of over-ocean flocking in the mid 1990s.
In 1761, British, French and Austrian astronomers and mathematicians set off to build on the first observations of Horrocks.
He probably made his first observations, of the Moon, in October, said Owen Gingerich, a historian of astronomy at Harvard.
The first observations of a transit of Venus came from Jeremiah Horrocks in Much Hoole, a tiny village in Lancashire.
Construction of SALT began in 2000, and it made its first observations in 2005.
Construction on the HET began in 1994, and it made its first observations in 1996.
Construction of the VLT began in 1991, and its first observations were made in 1998.
It was financed by the Rockefeller Foundation, and the first observations were made in 1949.
Gemini North and South made their first observations in 1999 and 2000, respectively.
Construction on Subaru began in 1992, and the first observations were made in 1999.
Although computer simulations have already suggested a link, this study, published online yesterday in PLoS Medicine, offers the first observations of the phenomenon.
