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Two Harvard engineers are to spray sun-reflecting chemical particles into the atmosphere to artificially cool the planet, using a balloon flying 80,000 feet over Fort Sumner, New Mexico. The field experiment in solar geoengineering aims to ultimately create a technology to replicate the observed effects of volcanoes that spew sulphates into the stratosphere, using sulphate aerosols to bounce sunlight back to space and decrease the temperature of the Earth.

An engineer who created plans of working replica for the starship Enterprise has created a petition for NASA to consider the project.

The engineer suggests that the 3,000 foot-long ship be built in space and not land on the surface of any moon or planet so that it would never need to reach escape velocity. The ship would use on-board nuclear reactors, cutting down cost of fuelling the ship. He estimates his re-design of the Enterprise would be able to travel to the moon in a mere three days, and Mars in three months.

Military drones are already used to survey the border between the US and Mexico, but starting last week, another piece of military technology has made its way back home. The latest surveillance tool to be picked up by the Department of Homeland Security is the Kestrel wide-area camera system, which can capture miles of terrain in a single high-resolution image. The system was originally used in Afghanistan, where it watched perimeters and took pictures of insurgents at bomb emplacements.

NASA: Increasing the Awesome?

Contemplating the ritual of sending Washington a check every April 15, popular Internet vlogger Hank Green of Vlogbrothers explains why he believes NASA is worth every .45 penny of your hard-earned tax dollar.

That astonishingly awesome claim comes from Dr. Richard B. Hoover, an astrobiologist at NASA’s Marshall Space Flight Center, who says he has found conclusive evidence of alien life — fossils of bacteria found in an extremely rare class of meteorite called CI1 carbonaceous chondrites. (There are only nine such meteorites on planet Earth.) Hoover’s findings were published late Friday night in the Journal of Cosmology, a peer-reviewed scientific journal.

June 4, 2010: Earth and space are about to come into contact in a way that's new to human history. To make preparations, authorities in Washington DC are holding a meeting: The Space Weather Enterprise Forum at the National Press Club on June 8th.

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