A Lunar Space Elevator Could Be Built for $2B [pdf]

New evidence of a cosmic impact appx. 12,900 years ago at the end of the Younger Dryas.

Six New Horizons scientists propose geophysical planet definition: "A planet is a sub-stellar mass body that has never undergone nuclear fusion and that has sufficient self-gravitation to assume a spheroidal shape adequately described by a triaxial ellipsoid regardless of its orbital parameters"

Determining the Structural Stability of Lunar Lava Tubes [pdf]

Evidence for nuclear explosions on Mars [pdf]

NASA Releases Details of Titan Submarine Concept

Boeing's winning manned mission to Mars selected by NASA and announced Tuesday.