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Special Report

Galileo and the International Year of Astronomy

A look at the legacy of Galileo Galilei, 400 years after the Italian astronomer turned his spyglass toward the heavens

  • October 20, 2009

NASA and ESA headed back to Jupiter's moons

NASA and the European Space Agency (ESA) today unveiled their joint plans for exploring the outer planets, choosing to head to Jupiter and four of its moons before further exploring the moons of Saturn.

February 18, 2009 — John Matson

Astronomers retrace Galileo's discoveries with a replica of his 400-year-old telescope

For astronomy buffs, the arrival of 2009 brings more than just resolutions to eat better or live more frugally. The fledgling year has been designated the International Year of Astronomy (IYA) by the United Nations Educational, Scientific and Cultural Organization (UNESCO) and the International Astronomical Union.

January 13, 2009 — John Matson

Was Galileo second fiddle--er, telescope--to Harriot?

The International Year of Astronomy (IYA), now under way, marks the 400th anniversary of the year that famed Italian astronomer Galileo began observing and documenting the heavens with increasingly powerful telescopes.

January 21, 2009 — John Matson

Heads up: 100 Hours of Astronomy celebration starts today

Stargazers take note: Today marks the beginning of a four-day celestial celebration called 100 Hours of Astronomy, part of the International Astronomical Union's International Year of Astronomy (IYA2009).

April 2, 2009 — John Matson

400 years ago, Galileo's telescope was ready for prime time

As commemorated by the International Year of Astronomy and observed elsewhere on this site, 2009 marks the 400th anniversary of the year that astronomer Galileo Galilei began fashioning his own telescopes and turning them to the heavens.

August 26, 2009 — John Matson

From Astronomy to Zune

Scientific American astronomy expert George Musser discusses the recent meeting of the American Astronomical Society and SciAm.com's Larry Greenemeier reports on the Consumer Electronics Show. Plus, we'll test your knowledge about some recent science in the news

January 14, 2009 — Steve Mirsky