In August 2012, NASA’s Voyager 1
probe became the first human-made
object to enter interstellar space – the
vast area that lies between the many
star systems in our Galaxy. Once
thought to be empty, it now seems
the interstellar medium could be the
key to understanding dark matter, the
birth of stars and the origin of life
WORDS BY COLIN STUARTn
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y
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VOYAGER:
BEYOND OUR
SOLAR SYSTEM
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