The National Aeronautics and Space Administration (NASA,) is an executive branch agency of the United States
government, responsible for the nation's civilian space program and aeronautics and aerospace research. Since
February 2006, NASA's self-described mission statement is to "pioneer the future in space exploration, scientific discovery and aeronautics research.
You might think of asteroids as isolated bodies tumbling alone through space, but it's entirely possible for these old
"loners" to have companions. Indeed, 19-mile-wide Ida, 90-mile-wide Pulcova, 103-mile-wide Kalliope, and
135-mile-wide Eugenia each have a moon. And 175-mile-wide Sylvia has two moons. Measuring 330 miles
across, Vesta is much larger than these other examples, so a "Vesta moon" is entirely possible.
This could be a first step toward recapturing the humidity from our sweat, from our breath, even from our urine,
and recycling it and making it drinkable," said NASA project scientist and experiment leader Howard Levine,
who made a reference to water-recycling "stillsuits" used on a desert world in the science fiction series Dune.
Modern bacteria use an enzyme called nitrogenase to cycle nitrogen from one form to another. This enzyme is
dependent on the presence of metallic elements like iron (Fe), vanadium (V) and, most often, molybdenum
(Mo). However, ancient oceans didn’t contain much molybdenum. Could Fe-nitrogenase or V-nitrogenase
have played a larger role in the archaean oceans than they do today? To answer this question, a team.
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