Month: October 2009

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The Discovery of the First Gravitational Lenses

October 7, 2009 admin 0

Astronomy Beat #33 The Discovery of the First Gravitational Lenses (PDF, 1.3 MB)by Ray Weymann (Staff Member Emeritus, Carnegie Observatories) Click on the link above to view the pdf, or right-click (PC)/control-click (Mac) the link to download the file to your computer. Adobe Reader is required to view Astronomy Beat. [Read More…]

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ISS Tour

October 2, 2009 admin 0

This is a FOUR-PART video series that takes you on a complete tour of the International Space Station, guided by a NASA astronaut and filmed in the summer of 2009. Enjoy!