On the Expanding Earth and Shrinking Moon

Image Shrinking and Expanding on a Pyramid

We develop two algorithms to perform the q step shrinking and expanding of an N×N binary image on a pyramid computer with an N×N base. The time complexity of both algorithms is O(√ q ). However, one uses O(√ q ) space per processor while the per processor space requirement of the other is O (1).

Shrinking Hardware, Expanding Interfaces

3D Sensing with MEMS Accurately sensing location in 3D currently requires large, expensive devices. Researchers in MIT’s Department of Aeronautics and Astronautics have devised an approach to microelectromechanical systems (MEMS) fabrication that lets engineers design 3D configurations for existing fabrication processes. They used the approach successfully to build a MEMS device that enables 3D...

Expanding Universe , Shrinking View

Zircon from the Moon , Earth and Mars

The Oldest Earth and Moon Rocks

Introduction: We describe a project that could greatly alter our understanding of the environment on Earth at the time in which life originated. The approach is to systematically search for terrestrial rock and mineral samples that should be present on the lunar surface due to impacts, and in selected terrestrial localities. Project activities include studies of terrestrial materials, developme...