Mad Rant: Outer SpacePosted: March 13, 2012
Ask me to draw a diagram of a two-loop pressurized-water nuclear reactor and I can probably do it — I love to draw and it’s been a while since I tested myself on basic reactor layout. But understanding the fundamental design of nuclear reactors is simple compared to describing my enthusiasm for outer space.
I’m one of those who want our species to explore the emptiness, populate the solar system, and eventually wander the galaxy. But that’s not the enthusiasm I’m talking about. My adoration of the great beyond is simpler, and yet I can’t find a container in which to put that adoration so as to carry it around and show to others. I’m just geeked that outer space exists at all and that we’re a part of it, composed of its fused particles.
To me, the fascination seems obvious. I’ve tried more than once to put this feeling into words, and have achieved consistent and complete failure. The response is usually a raised eyebrow or something like it. Words fail me, or maybe I fail the words. Regardless, I’m going to take another shot at articulating my glee, or whatever it is. Hang on, let me put on my seatbelt and crash helmet. Right then, off we go.
So space is there, several dozen miles above your head, but so what? Humans have been there and back. No biggie. Space is nothing new. In fact, it’s the least new thing ever. Space has been out there (and here, for that matter) as long as time has existed, and I’m not trying to be hyperbolic or poetic about it. Time and space seemingly arrived on the scene at the same time. Maybe I should shrug and put on some fashionable air of “been there, done that.” But it would go against my very nature.
You may have noticed lately that two stars dominate the western sky shortly after sundown. They’re the planets Jupiter and Venus, the bright objects you saw in the photo at the top of this post. But which is which? Go ahead and guess. You might guess that the brighter one (bottom right) is Jupiter and the dimmer one is Venus.
Here, I’ll give you a clue. This is a close-up of the planet in the upper left of the photo:
Notice anything? Those little specks lined up near the planet are the four largest Jovian moons. From top to bottom they are Europa, Io, and Ganymede, with Callisto barely visible below Ganymede. That means this planet, the dimmer of the two, is Jupiter. If you want to double-check my interpretation of the image, see page 38 in the March issue of Astronomy.
Jupiter is more than twice the mass of all the other planets in our solar system combined, but its orbit is also 483 million miles from Earth’s orbit. That’s 18 times farther away from Earth than the orbit of our next-door neighbor, Venus. Hence, Jupiter is the dimmer of the two.
You can look up and see these things and so what? They’re just a couple of planets. What’s the big deal?
Jupiter, Venus and their brethren aren’t just points of blurry light. They’re three-dimensional worlds composed of the same stuff as our own. They’re planets, huge spheres of matter, entire worlds that no Earthling has ever visited. They just float there, out of reach, perpetual mysteries. Some have their own earthquakes, volcanoes, or lakes. Others have wind and storms, while others have no atmosphere whatsoever. The planets in our solar system have been there for billions of years, the only witnesses to the entire history of our solar system.
Even when the sun is up and the sky cloudless, the blue is only a veil, behind which the ultimate dynamo — the universe — continues to crank along as it has for all time. In a way, these worlds (and everything beyond) are reassuring. Being human if often frustrating and scary, but the worlds, the solar system and the universe don’t need anyone to mind the store. We can disappear, and everything will be fine. Our neighboring planets are just there, indifferent and presumably lifeless.
When I look up, I don’t really see the points of light that my eyes see. I see huge islands among emptiness. I see the forever-baking surface of Venus, Jupiter’s 60-plus moons whirring about, the Oort Cloud, the galaxies with solar systems of their own. Outer space is the place of mysteries, with room for the mind to ponder the strangest ideas imaginable.
Oh dear, I’ve failed again. Maybe I need a different medium. Poetry? Song? Modern interpretive dance? Maybe someday.
In the mean time, what do you think about when you look up at the stars? What is outer space, or the universe, to you?