Do I Dare Disturb the Universe?
Tuesday, April 30th, 2002Back in March our astronauts replaced and upgraded several key pieces of the Hubble Space Telescope, including, most spectacularly, the main camera. Now we have the first pictures from Hubble since the upgrade. Now, I don’t want to toot our own horn here, but damn our universe is beautiful. I think it’s by far the most beautiful universe I’ve ever seen.
The universe is a really amazing place. I mean like really amazingly amazing. And talk about big! Well, the closest star to our solar system is Proxima Centauri - some four light years away in the Alpha Centauri system (which is actually three stars orbitting each other). Four light years is a pretty short distance in the cosmic sense, a mere 23,462,784,000,000 miles away. In contrast, Voyager I, the furthest man-made object from earth is about 7.8 billion miles away. This is a measly 11 light hours and 39 light minutes away!
Here’s some more stuff that’s just way too big to wrap my head around:
* The universe is flat. Even with billions of galaxies, trillions of miles away from ours in all directions, the universe still ends up being more or less on a flat plane.
* A teaspoon full of matter from a neutron star would weigh a billion tons on Earth. If all the Earth’s mass was squeezed into this density, it would fit inside of a large sports stadium.
* String Theory, a popular scientific theory that seems to reconcile the previously contradictory fields of Quantum Physics and Relativity, requires that there be some ten dimensions of space-time. We can move freely in three of them, and in only one direction in the fourth (time).
Faced with the enormity of the things I cannot ever change, I often feel very calmed when I think about this stuff. All the things that happen here on Earth - no matter how joyful, devastating, amazing, or mysterious - mean nothing to the rest of the universe. If we all disappeared tomorrow, and the Earth shattered into tiny pieces, the universe would hardly notice. We just go on living and dying, and the universe keeps expanding into an infinity we can never comprehend.
How beautifully tragic.
Bye for now.