Galileo and the Impact of

the Telescope on AstronomyDanny PanDrexel University10/21/09

International Year of Astronomy

No night without a telescope (Oct 18. to Nov. 24) www.haverford.edu/iya2009/

Sunday – Villanova

Monday – Widener

Tuesday – Swarthmore

Wednesday – Drexel

Thursday – Franklin Institute

Friday – West Chester

Saturday – Haverford AND UPenn

The Telescope

Galileo Galilei (1609)

Jupiter

Moon and the Sun

Phases of Venus

Geocentric vs. Heliocentric

Ptolemy (Geocentric) Copernicus(Heliocentric)

Galileo vs. Roman Catholic Church

Galileo published findings in 1610 Supported Heliocentric Model

In 1614, Father Tommaso Caccini denounced Galileo’s findings, calling it heresy

In 1632, papal trial found Galileo suspect of heresy, put under house arrest

Under house arrest until 1642, when he died

October 31, 1992, Pope John Paul II apologized

Keck, 10 meter telescope in Hawaii

Gemini, 8 meter telescope in Chile

Hubble Space Telescope, 2.4 meter telescope in

Space

Pictures (Crab Nebula)

Pictures (Antennae galaxy)

Pictures (Eagle Nebula)

Astronomers use the Whole Spectrum of Light

Composite Images (M81)

LCROSS