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

Studies of space, hearing and DNA attract $1 million awards

Trump aims to make it easier for companies to get to space

Humans account for very little next to plants, worms, bugs

NASA shipper Orbital ATK launches space station supplies

Video shows bizarre world on the ocean floor

NASA, Uber team up to get flying taxis off the ground

NASA releases amazing nebula image for Hubble anniversary

Science Says: Amount of straws, plastic pollution is huge

NASA's Mars rover Curiosity marks 2,000th day on red planet

New nickname for Pluto-explorer's next target: Ultima Thule

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