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April 2007

Radiation Shielding and Magnetic Sails

{ 7 comments }

A Conference on Warp Drive

{ 8 comments }

Gerald Nordley: Doubts on Gliese 581 c

{ 16 comments }

Administrative: RSS Feed Glitch

{ 0 comments }

A Gliese Moment

{ 20 comments }

Gliese 581 c: Chances for Habitability

{ 45 comments }

A Potentially Habitable Earth-like World

{ 81 comments }

A Huge Intergalactic Cloud

{ 8 comments }

A Practical Positron Rocket II

{ 249 comments }

Black Holes May Stir the Cosmic Broth

{ 5 comments }