LiveScience.com - The short answer: a lot. The long answer: depends on how you look at it. Whatever your viewpoint, here's how $700 billion - the figure inked in the initial dead-in-the-water government bailout bill for Wall Street - compares to other vast sums. NASA in fiscal year 2009 will launch several missions into space and pay for hundreds of people to operate a host of space telescopes and even remote robots on Mars and run a PR and media department that puts most large corporations to shame. The agency's budget: $17.6 billion, or 2.5 percent of the bailout sum. ...

AP - Federal officials will investigate the New Orleans police officers involved in fatal shootings that happened on a city bridge after Hurricane Katrina, authorities said Tuesday.

AP - The capsule that brought the first comet samples back to Earth is going on display at the Smithsonian National Air and Space Museum.

AP - The federal government took a new, ecosystem-based approach to the endangered species list on Tuesday, proposing an all-at-once addition of 48 species, including plants, two birds and a fly, that live only on the Hawaiian island of Kauai.

Reuters - Scientists have unearthed the remains of a large meat-eating dinosaur with a breathing apparatus much like a modern bird, fortifying the link between birds and dinosaurs and helping to explain the evolution of birds' unique system of breathing.

AFP - In an unprecedented discovery, NASA's Phoenix Mars Lander has found snow falling from clouds on Mars, scientists said Tuesday.