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Space junk 'in the millions' orbiting at 18,000mph could pose 'genuine threat' to life
A space physics expert has warned that debris falling from the sky could cause major damage and even kill people.
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What Is a Nebula?
What better way to end than with some examples of said beauty and utility? After all that reading, we'll leave you with a few glamour shots of our favorite nebula: Messier 16, better known as the ...