The Solar System Discovery Timeline nineplanets.org -

The Beginning Astronomers began using the telescope to study the sky in the 1600's. Telescope – an instrument used to make further objects appear closer

Old vs. New Telescopes www.scitechantiques.com www.celestron.com

Famous Astronomer An astronomer named Galileo made some of the earliest discoveries with the telescope. careful observations detailed journal record

Important Dates In 1704 the term "Solar System" first appeared in the English language. The first object sent into space was the satellite Sputnik 1 in 1957.

Important Dates In1959 the first image of the Earth from space was taken. Neil Armstrong was the first man to walk on the moon, on July 21, 1969 during the Apollo 11 mission. Let’s watch a video:

Discovery of the Planets Timeline

Current Update In 2006 Pluto was named a dwarf planet instead of a planet due to its large icy structure. http://en.wikipedia.org/wiki/Pluto

Telescope 2010  --  The Gran Telescopio Canarias is built on a Spain island on the top of a volcanic peak 7,438 feet above sea level. It is the largest telescope of our time. http://www.kidsastronomy.com/telescopesD.htm

Thank you for being awesome! Homework Complete the timeline worksheet with a partner. Thank you for being awesome!

Sources http://www.kidsastronomy.com/telescopesD.htm http://cse.ssl.berkeley.edu/segwayed/lessons/boss/background_info.htm