We went up to Canada for some vacation time this past week and so I didn’t have much chance to keep up with the news about the space shuttle landing. We did find out that it was delayed, and I woke up this morning to hear that it landed safely. So, that’s a big “whew!” even if we don’t have any shuttles going up for the foreseeable future. At least this crew proved that the shuttle could still fly; now if we could just get the fuel tank folks to fix it so that debris doesn’t smash into the shuttles during launch, that would be great!

Of course I’m interested because I want to see Hubble Space telescope refurbished and kept on orbit a few more years. Every time I see images from HST like the one below, I just hope that we can hold it together for a couple more years until the shuttle can get back up there and deliver a crew to bring HST back into full functionality.

Hubble Spies a Zoo of Galaxies
Hubble Spies a Zoo of Galaxies

HST gives us a peek at the distant, early past of the universe. The more it looks farther into space, the further back in our history it lets us see, and to my way of thinking, that’s pretty cool stuff!

Change is the Only Constant

One of the interesting aspects (out of many) about my writing and research work on the exhibit project for Griffith Observatory is realizing (again) how quickly things change in astronomy. Just when I think I can say something with great certainty about a celestial object or process, a discovery comes along that shifts the landscape of “what is known.”

Take the announcement I got tonight about the discovery of what is likely the 10th planet in our solar system. Astronomers Mike Brown of California Institute of Technology, Chad Trujillo of Gemini Observatory in Hawaii, and David Rabinowitz of Yale University in Connecticut used the Samuel Oschin Telescope at Palomar Observatory to spot a Kuiper Belt object in the outer realms of the solar system that is definitely larger than Pluto (currently the 9th planet of the solar system). Now, anybody who’s had their ear to the ground lately has heard a number of conjectures about Pluto and the rest of the KBOs (as they’re called). Some folks think that Pluto is merely a planetoid, and doesn’t deserve the name “planet.” Others maintain Pluto’s a planet, and I count myself among them.

There is NO doubt, however, that there are large objects out in the Kuiper Belt, which is a region of space populated by objects like Pluto (some larger, some smaller), most of which date back to the earliest epochs of our solar system’s existence. Astronomers are actively searching out these objects and trying to understand them. By studying them, we may find out more about the composition of the cloud of gas and dust from which all the planets, moons, rings, asteroids, and comets formed more than four billion years ago.

So, does this change what I write for the exhibition about the Kuiper Belt, Pluto, and our solar system? An excellent question. I’m sure our discussions about this information will be interesting, indeed!

Exploring Science and the Cosmos

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