Buzz Aldrin: Our mission to the moon was shared by the world as an adventure. He says he became depressed after the mission was over. Aldrin says he took on a new mission: to open space to the average person. He says a mission to colonize Mars would restore adventure of space travel

The Mars Odyssey mission may not be the latest or most glamorous Martian explorer, but it’s the longest-running, and it does boast an impressive thermal imaging system. Orbiting the planet as it does, Odyssey’s scientific packages continue to provide a very rich picture of the fourth planet’s aerology. Last September 30, Odyssey was directed to alter its orbit to gain even better sensitivity for its infrared mineral mapping of Martian minerals. The adjustment will allow THEMIS to look down at sites in mid-afternoon, rather than late afternoon, collecting infrared radiation when the rocks are warmer. Previously, its orbit was a compromise between THEMIS and the mission’s Gamma Ray Spectrometer. Part of the Gamma Ray Spectrometer is being turned off. In addition to the increase in time, THEMIS will now occasionally be aimed obliquely, rather than straight down, allowing the team to do some 3D imaging.

A University of Colorado at Boulder research team has discovered the first definitive evidence of shorelines on Mars, an indication of a deep, ancient lake there and a finding with implications for the discovery of past life on the Red Planet. Estimated to be more than 3 billion years old, the lake appears to have covered as much as 80 square miles and was up to 1,500 feet deep -- roughly the equivalent of Lake Champlain bordering the United States and Canada, said CU-Boulder Research Associate Gaetano Di Achille, who led the study. The shoreline evidence, found along a broad delta, included a series of alternating ridges and troughs thought to be surviving remnants of beach deposits. "This is the first unambiguous evidence of shorelines on the surface of Mars," said Di Achille. "The identification of the shorelines and accompanying geological evidence allows us to calculate the size and volume of the lake, which appears to have formed about 3.4 billion years ago."

Some pesky scientists have just pointed out an appalling design error in NASA’s latest attempts to find life on Mars. This is beginning to look like a conspiracy. Does someone not want us to find life on Mars? NASA has tried looking for signs of life on Mars precisely once, in the 1976 Viking mission. The result was positive. The reason nobody says there is life on Mars is that another experiment, part of the same mission, couldn’t find any carbon-based “organic” chemicals in Martian soil. This, NASA decided, overruled the other result: with no carbon present, there could be no microbes living on or under the surface of Mars. Last year, the Phoenix lander repeated the carbon search and failed to find organic molecules. The problem is, we know that there ought to be organic molecules on Mars. Asteroid and comet impacts will have put them there. So what’s going on? Both of the searches for organic molecules, it turns out, have been deeply flawed.

In a move that reflects the uncertainty surrounding NASA's current strategy for replacing the space shuttle and returning astronauts to the Moon by 2020, House appropriators slashed by 16 percent the space agency's $4 billion request for manned space exploration in 2010. The proposed legislation, marked up June 4 by the House Appropriations commerce, justice, science subcommittee, trims $483 million overall from U.S. President Barack Obama's $18.7 billion budget request for NASA next year. The $670 million cut to the 2010 manned exploration request would leave $3.21 billion, which is less than is available for the effort this year.