common observer, uncommon observations uncommon observations

It is Time to Think About Dark Matter

Galaxy Cluster A520. NASA, ESA, CFHT, CXO, M.J. Jee (University of California, Davis), and A. Mahdavi (San Francisco State University)The most commonly used noun in the English language is time. Yet time is nothing more than an idea. It is an intangible concept invoked to make sense of the world such that, ‘everything doesn’t happen at once,’ as Einstein said. The actual most common thing in the universe is dark matter. Dark matter purports to be more than an idea. It has some kind of elusive tangible existence, yet it has never been held in anyone’s hands.

 

The nearly invisible components of nature such as cells or atoms can only be seen with the aid of tools. If you see a cell with a microscope there exists a physical and philosophical stratification between your perception, your eye, the optics of the microscope, and the observed cell. If you see an atom on a computer monitor rendered from data from an atomic microscope then the layers of complex stratification between you and the atom are monumental. What can we truly know about the nature of things which can only be observed through tools? I would argue quite a lot. Dark matter will always remain isolated from basic human perception, but we can know it through tools or imagination.

You can read the rest of my piece on how we imagine and discover dark matter over at 3 Quarks Daily…

 

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