Showing posts with label supernovae. Show all posts
Showing posts with label supernovae. Show all posts

Wednesday, January 8, 2020

Holy Nova!

Either a supernova  or a mammogram.
So the Good Star Betelgeuse might be on the way out. One thing is guaranteed, humans being what they are (gullible, imaginative, and self-centered in the extreme): if Betelgeuse goes ahead and dies on us in a fiery explosion, a lot of people aren't going to be content to admire it for the awesome spectacle it is, but will impute all sorts of significance to it. It will be a sign of something: impending doom, God's Moral Flashlight, anything but the collapse of a massive star that has about run out of fuel and can no longer overcome the force of gravity. Nope: people already believe that their lives are disrupted whenever a planet looks like it's going backwards but isn't. They're not going to let a supernova go by without wringing as much meaning out of it as they can.

For instance, there's quite a lot of speculation that the Star of Bethlehem that led the three wise men to Jesus's bed of straw was actually a supernova. Now, right off the bat you have that problem with witness reliability: Matthew was the only Gospel writer who even mentioned a big star, which you'd think one of the others would have noticed. Especially if it was moving around the sky and pulling up short and parking right over the baby.

But evidently there was a doozy of a nova on February 23, 4BC. And some scholars, based on various things known about King Herod, put Jesus's birth at anywhere between two and six years before his birthdate, which is a good trick all by itself, but maybe not a problem for the divine.

We can't take everything the Gospel writers said to the bank. They don't agree with each other. Everyone has the blessed event taking place in Bethlehem, which concords with an earlier prophesy, but some have Joseph and Mary and the babe hieing off to Egypt and others have them right back in Nazareth, having only popped off to Bethlehem for the census.

(Think about that for a moment. We get all upset when someone bangs on our door for the census, or we have to fill out and mail a form. Imagine how a modern person would feel about making a road trip for the purpose. On a donkey. Pregnant.)

Anyway if it was that particular nova, once again, we're dealing with something that actually took place 21,000 years earlier, so if it really was announcing the birth of the Savior of Mankind, that was some slick planning. The only thing we know of that was happening around then was that people were moving to the vicinity of Canberra, Australia. And generally speaking it isn't mankind that needs to be saved when people start occupying territory, it's the animals that already lived there. Nevertheless, the whole coincidence--star blowing up, baby born 21,000 years later, mankind redeemed--is considered by some to be a mystical slam dunk, because God.

Now if good old Betelgeuse were to collapse this year, it really would've happened in about the time Peter the First of Portugal was born. Peter was in love with his wife's maid and his own father hired men to decapitate her; he had her dug up again, but nobody is reported to have sailed into the sky or anything, and he had to settle for matching tombs so that at least they could be together at the Last Judgment.

To be fair, lots of supernovas haven't panned out, Messiah-wise.

But let's stick to the convention that the significant event is the arrival of the light from the explosion to our planet. In that case, if Betelgeuse goes off now, we should start looking around for a new savior, and it's none too soon. I would've put my money on Greta Thunberg, but I guess it's too late.

Saturday, January 4, 2020

Duck! It's Betelgeuse!

The internet is abuzz with rumors of the imminent demise of the star Betelgeuse, but it also claims that illegal immigrants are allowed to vote and Hillary Clinton has people murdered, so I wouldn't get too worked up about the star. The huge bright star has dimmed appreciably in just the last month, however, which could be a precursor to its becoming a supernova, or not.

As awesome as that would be--you'd be able to see it in the daytime--it's probably fruitless to spend the night in a lawn chair waiting for it. You're liable to be chilly, and also disappointed.

Because although Betelgeuse is a big fat red star and is entirely expected to blow up sooner rather than later, "sooner" is a relative term: the human lifetime is not a standard measure for any number of things happening in the universe, no matter how we might feel about it. And besides that, the idea that Betelgeuse is going supernova at all is misleading. As a recent philosopher once put it, it depends on what the meaning of "is" is. If that sucker lights up the sky this month, it really did it in the fourteenth century, and we're only just hearing about it.

Betelgeuse is an Arabic word meaning Orion's Armpit. Orion, the Great Hunter, is the biggest brightest constellation in the sky and viewable from every hemisphere, right where he was installed by Zeus as a favor to a couple of goddesses. In spite of a nice set of nebulas below his belt he is universally assumed to be facing us, which makes Betelgeuse the star at his right shoulder. He is instantly recognizable by his belt and by the line of stars descending from it which we're going to go ahead and call his "sword," and never mind what those goddesses say.

Humans take everything personally. Orion might be a great hunter to some, but in some quarters he's a bison, and elsewhere he's a child's string game, like Cat's Cradle. In any case, even if you see a sword hanging from a belt, how it's hanging is a trick of perspective, because them stars ain't anywhere near each other.

Reminds me of the time we were admiring the view from East Zig Zag Mountain, from which five serviceable volcanoes can be seen, and a young woman asked me what the mountains were. So I told her. Mt. St. Helens on the far left, then Rainier, etc. She thanked me and went back to her picnic rock where I overheard her boyfriend explain that I was full of shit, because Rainier is to the left of Mt. St. Helens.

Which it is, from Portland. But not from East Zig Zag. Mt. St. Helens could have been spewing ash and geologist shrapnel into the air and he still would have called it Rainier, which (he further explained) is much bigger than that little dinky one I pointed out. (It's also fifty miles further away, Idiot Lips.)

So from here we see a nice big great hunter but if you could see the same stars from some other elbow of the galaxy it might totally be Mildred, The Needlepoint Artist. Hope her sore shoulder gets better.

Happy Birthday to my niece Elizabeth!