Photo: GALILEO'S TELESCOPE AT 400: Facts, Myths, More

Email to a Friend << Back to Full Story


Galileo explains the phases of the moon to clergy members in Italy in an artist's rendering.

On August 25, 1609, Galileo's telescope was unveiled in the Italian city-state of Venice.

Illustration by Jean-Leon Huens

MOST VIEWED NEWS

"Lost" Amazon Complex Found; Shapes Seen by Satellite

Earliest Known Galaxies Spied in Deep Hubble Picture

PICTURES: Tigers Butchered for Trade at "Zoos" in China
NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS

ADVERTISEMENT

NATIONAL GEOGRAPHIC'S PHOTO OF THE DAY

Today's National Geographic Photo of the Day

• Today's Photo

• Download as Wallpaper

50 Drives of a Lifetime

Listen to your favorite National Geographic news daily, anytime, anywhere from your mobile phone. No wires or syncing. Download Stitcher free today.