Space

Tiny origami robots are flexible space rovers

7 Earth-sized alien worlds offer 'giant leap forward' in search for other life

8 things to know about the vernal equinox

Why are Earth-observing satellites so important?

Take a spacewalk and visit the ISS in stunning virtual reality

NOAA's lightning tracker makes flashy debut

Potatoes can be grown on Mars, study shows

Happy anniversary, Supernova 1987A

How volcanoes can make planets more habitable

What to see in the night sky in March

Astronomers may have just discovered Luke Skywalker's home world

'Ring of fire' eclipse to put on show for millions

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