NASA assigns astronauts to SpaceX, Boeing test flights

Birds learn another 'language' by eavesdropping on neighbors

Mars making closest approach to Earth in 15 years

Years of work ahead to study chemical pollution at NASA site

Astronomers spy nearby star that could be chomping a planet

Jupiter's moon count reaches 79, including tiny 'oddball'

Report: NASA needs backup plan as US crew launches slip

NASA's Kepler Telescope almost out of fuel, forced to nap

Mars rover still silent as red planet dust storm goes global

White House aims to reduce satellite clutter in space

NASA's record-breaking spacewoman retires as astronaut

Rescued seahorse released into the wild in Florida

Many animals are shifting from day to night to avoid people

Spacewalking astronauts set up TVs for arriving ships

New Mars discoveries advance case for possible life

The heat is back on high: May smashes US temperature records

Unhurried hurricanes: Study says tropical cyclones slowing

Dunes on Pluto made of tiny frozen grains of methane

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