Tycho and Copernicus: Lunar Ray Craters

BBC Four - The Sky at Night - Section 2: Bright and dark craters

Our Neighbour in Space: The Moon Whitby & District Astronomical

Astronomy Picture of the Day Tycho and Copernicus: Lunar Ray Craters (2001-08-09) • ISS Tracker

APOD Retrospective: March 5 - Starship Asterisk*

Our Lovely Moon And we're lucky to have it! Assembled By Ken Mitchell Livermore TOPScience. - ppt download

Copernicus (lunar crater) - Wikipedia

A guide to the Moon's Copernicus Crater - BBC Sky at Night Magazine

XWare > APOD

APOD Retrospective: March 5 - Starship Asterisk*

APOD Retrospective: March 5 - Starship Asterisk*

Copernicus, Clavius + Tycho - Major & Minor Planetary Imaging

APOD Retrospective: March 5 - Starship Asterisk*