How Close Are We to Finding Dark Matter?


For decades, scientists have been working to find the missing part of our universe known as dark matter. So, how close are we to finding it?

How Close Are We? Season 2 –

Thumbnail image courtesy of SNOLAB.

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Dark matter secrets could lie buried in ancient rocks on Earth
“For the past 30 years, a number of experiments have tried to detect these collisions. This direct detection approach involves monitoring a lot of atomic nuclei in a laboratory to see if any get nudged by a dark matter particle. The largest such experiment, XENON1T at the Gran Sasso National Laboratory in Italy, used about 1 tonne of liquid xenon.”

What if everything we know about dark matter is totally wrong?
“There’s a mine, deep underground in Canada, that’s unlike any other…It’s located at a depth of two kilometres – so deep you could easily stack four and a half Empire State buildings into this hole, one on top of the other. SNOLAB detectors scour the cosmos for the elusive stuff thought to make up the bulk of matter in our universe: dark matter. ”

What if It’s Not Dark Matter Making The Universe’s Extra ‘Gravity’, But Light?
“We’ve been looking for decades for dark matter, yet the mysterious stuff remains undetectable to our instruments. Now, astrophysicists have explored an intriguing possibility: what if it’s not dark matter that’s affecting galactic rotation after all. What if it’s the mass of light instead?”


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Images provided by ESA and the Planck Collaboration were used under CC BY-SA 3.0 IGO license.