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Touching Hubble’s history

by Phil Plait, Dec 03 2008

I want to indulge myself for a moment and follow up on what Ryan wrote about our shoot at Mt. Wilson.

When we shot The Skeptologists, I had never been to Mt. Wilson before. I’ve been to a few observatories, including some small ones affiliated with Universities, Mt. Stromlo in Australia, and the IAC facilities on La Palma in the Canary Islands.

These are all fantastic places to visit, but they’re relatively new. Mt. Wilson has been around for a long, long time, and even better, we filmed in the dome of the Hooker 100″ telescope. When I found that out, I was ecstatic! This was the very telescope used by Edwin Hubble when he was investigating the nature of what they used to call simply "nebulae", what we now call galaxies.

When we got there, I was not disappointed. The ‘scope is magnificent! I love the brute force steelworks of it, the criss-crossing braces, the sky-blue paint. The control board was very retro (duh), and had an almost steampunk feel to it.

But the best part was when we went down into the pit, the bottom of the dome where we could stand under the magnificent ‘scope. I was peering around, and when I was underneath it I happened to look up. My eyes caught a flash of green, and I realized I was seeing the 100″ mirror itself. It was supported by a maze of steel, but gaps in the bracing and random bits of machinery and metal left a clear view of the glass.

I had an odd moment, thinking of the photons that hit that glass a century ago. They had traveled millions of light years through space before being reflected by that mirror. The galaxies observed by Hubble had emitted countless fleets of them, more photons than there are stars in the sky. The vast majority flew off into open space, and still ply their way between galaxies. But a tiny fraction of those made it to Earth. Some were absorbed by our atmosphere, and some few of those were aimed right down the telescope’s gullet. A fraction of those were absorbed by the mirror itself as well as the other mirrors used by the telescope to focus the light.

Out of the countless octillions of photons that started their journey, only a few made it into Hubble’s detectors. And from those scant particles of light, he and his fellow astronomer (Slipher, Hale, and others) discovered the Universe itself is expanding.

I stood there thinking of all that, and I couldn’t help it. I reached up and touched the back of the mirror. I laughed at myself a little; a skeptic connecting with a chunk of glass. I didn’t feel any vibrations, no sense of Hubble’s energy, no rapport with the history.

And yet… we’re still apes, we humans. We can see something, hear it, taste it; but it’s our fingers that relay so much of the sense of what’s around us. Nothing New Agey or superstitious, just a simian need to fulfill the part of the brain that desires the tactile sensation of connection.

But still. Touching that glass put me there. That part of my brain firing up gave me the extra dimension of sense, the understanding, the knowing, and (yes) the feeling the history of the place. And there is history at Mt. Wilson; our grand explorations of the cosmos took a major leap there. When I reached out my hand, that’s what I was experiencing, if only vicariously.

I remember it better now than I would have otherwise. I can still picture it all, can remember how it felt, and my sense of awe remains unabated.

It was, simply, cool.

And even a skeptic responds to that.

8 Responses to “Touching Hubble’s history”

  1. LovleAnjel says:

    Such a wonderful experience! I’m jealous. I only hope you didn’t leave a smudge…altho I suppose that wouldn’t make a difference on the reverse of the mirror.

  2. Beautiful description Dr. Plait. That feeling you are talking about I feel all the time when really contemplating science and how far these rather hairless simians have come. I just wish that we could project that sense physically to those who seek to fill their lives with woo and whatnot. I’ll make sure to point folks to this entry.

  3. No Phil;

    ESPECIALLY a skeptic responds to that.

    Regards,

    Psi

  4. Max says:

    I too understand, when on road trip, we stopped at the Wright-Paterson air museum inside they have a apollo command module, with a big do not touch sign. They should have put the chain a little farther back. When I touched it every image from the early space program I have seen, seemed to race through my mind, and I felt connected to something so much larger than my self.

  5. Carl says:

    At the National Air and Space Museum in Washington, I just had to reach out and touch the heat shield of a Gemini capsule.

    I know that feeling very well.

  6. fly44d says:

    Awesome. I get the same feeling just walking in the redwoods and thinking how over the years scientists have put together the knowledge of physics, chemistry, and biology to understand the sunlight, geology and life around me.

  7. Thomas Davidson says:

    Just standing outside at nite I get that feeling.

  8. MadScientist says:

    Hey there Phil, when were you last at Mt. Stromlo? I’m currently ‘squatting’ there (I have nothing to do with the observatory but they were kind enough to permit me to take up some office space). I’ve enjoyed the tours given by friends over the years and still feel really sad about all the damage in the 2003 fires; the Yale-Columbia telescope (the only sort of ‘telescope’ you see drawn in comics) and the Oddie telescope (a beautiful clockwork-driven refractor) are probably the ones I miss most even though they did not have the complexity or capability of the larger telescopes on site.

    A colleague of mine dropped by Mt. Wilson late last year; he showed me a photograph and I said “that’s funny – it looks exactly the same as a photograph I’ve seen in a book printed over 40 years ago”. Some things change so little.