The year 2009 has been designated by the International Astronomical Union and UNESCO as the International Year of Astronomy, marking the 400th anniversary of the invention of the astronomical telescope by Galileo Galilei - the first person to turn a research telescope toward the sky, opening new horizons for scientists and expanding the boundaries of the known universe.
This stamp series displays three milestones in the field of astronomical measuring which greatly impact our understanding of the universe:
Jacob's Staff - Gersonides
LISA (Laser Interferometer Space Antenna)
Galileo Galilei's telescope is depicted on the tabs.
Tel-Aviv University's Florence and George Wise Observatory, located near Mitzpe Ramon, is depicted on the First Day Cover.