Going Once… Going Twice…

17 Apr

On Monday (ok, let’s be honest, it was really Tuesday) there was a full lunar eclipse.  I was at the observatory with hundreds of people (in a town so small you can drive from one end to the other in 10 minutes) for about 6 hours.  It was brutal.  Not because of the work, not because of the lateness, but because of the throngs of people. And it was for a partial lunar eclipse (or what some people want to call a ‘blood moon’ and that shouldn’t irritate me but it kind of does…)

This one was really hyped up on social media which is why it was so well attended. But the thing about lunar eclipses (especially partial) is they occur with great frequency, at least twice a year and they are so, so, so not a once in a lifetime event. 

Partial lunar eclipse 2011
Note the redness from this very partial lunar eclipse taken a few years ago.

Of course I was overjoyed to see so many people excited over the event.  Of course I was happy that lots of people came out. But there was a palpable deflation when people asked if this really was a once in a lifetime event, or if they’d ever get to see the ‘blood moon’ again like this and the answer was ‘of course’.  In fact, they could probably catch another one like this many times in their life.  Many people were clearly sad that this was in reality, not a once in a lifetime event.

There are certainly once in a lifetime things all over astronomy.  If you were alive in the 70’s-90’s, congratulations! Pluto got as close to us as it’s ever going to get in your lifetime.

Haley’s Comet, Comet Hale-Bopp, Comet Hyakutake, and Comet Pan-STARRS were all once in a lifetime events (unless you are Mark Twain).

Comet PanSTARRS
You are never going to see this again.

The Venus Transit was most definitely a once in a lifetime event (or twice in a lifetime if you were paying attention in 2004).

Venus Transit 2012
I almost cried that day. Not even kidding.

And there are plenty more where that came from.  If you were alive when Voyager 1 and 2 were launched, well, there was a planetary lineup that hadn’t happened since Thomas Jefferson was in office.

Sedna (my favorite planetary body EVER) will be at its perihelion (closest point) in 2076.  And I might live that long!

Proxima Centauri is the closest star to us right now, but it hasn’t always been, and it won’t always be.  In 10,000 years, Barnard’s Star may be closer to us than Proxima Centauri, and in 30,000 some-odd years, Ross 248 will be closer to us than Proxima is now.

Movement of Close Stars

See that?  You are living the dream even as we speak.

And this is just astronomical phenomena.  We haven’t even talked about discoveries and human firsts.  There are so many astronomical discoveries that have occurred within your lifetime (even if you were born 12 months ago), I could make nothing but episodes on those, and I would never be finished.

Here are just a few that you have likely experienced:

  • Discovery of hundreds of new planetary moons in the solar system (over 20 were discovered in the year 2000 alone)
  • Discovery of extrasolar planets (1988)
  • Discovery of the first moon around an asteroid (1994)
  • Confirmation of the first brown dwarf (1995)
  • The discovery of multiple Plutoids; dwarf planets beyond Neptune (2004)
  • The Milky Way’s super massive black hole (2008)
  • The first probe enters interstellar space (2012)
  • First detection of an extrasolar asteroid (2013)

My point is, firsts and once-in-a-lifetime events are nice, but they’re not the most important part of astronomy. 

They add to the pile of cool stuff, but they are not the pile itself.

No matter how common or how rare, it’s the experience, that counts.

5 Responses to “Going Once… Going Twice…”

  1. educater34 MSc. June 19, 2020 at 1:12 am #

    useful article

  2. deecrowseer April 18, 2014 at 12:11 am #

    Ooops! I wrote a “blood moon” into one of my scripts, like it was a super-rare portent of doom… lucky it’s a comedy-horror, so maybe I can use this new knowledge for a gag? Hmmm…

    (Also, the words “super massive black hole” should always be followed by a Muse-style guitar riff. Fact!)

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