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There are many things that we don’t understand about dark matter, but whether it is actually dark isn’t one of them, writes Chanda Prescod-Weinstein
Space
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12 August 2020
![Why dark matter should be called something else 1 New Scientist Default Image](https://images.newscientist.com/wp-content/uploads/2020/08/12104743/fjawh5_credit_sakkmesterke-alamy_web.jpg?width=300)
WHAT’S the matter with dark matter? Its name, for one thing.
Dark matter is so-called because of the idea that it is like being in a room without a light on. But actually, we know the universe is filled with light even with lots of dark matter in it. We see evidence of this very often – directly from the sun during the day and reflecting off the moon at night. On a clear night we can see stars too. With sensitive instruments, we can also detect the cosmic microwave background radiation that pervades all of space-time.
The universe …
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