Showing posts with label degrade. Show all posts
Showing posts with label degrade. Show all posts

Thursday, September 28, 2017

Weird Planets 5

Now we begin exploring the exo-planets that only appeared on 2 of the 4 lists. Does it seem like this series will never end? Cheer up; the process will get faster. The fewer lists that contained a particular planet, the less information I have to pass on to you. I’d like to get through several planets today, so let’s get started.

Earth Jr is only 20 light years away. It’s official name is Gliese 581d. Actually, there may be 2 planets around the same star, but only 581d is mentioned on both lists. 581g was a ‘shiny thing’ that briefly appeared in the same paragraph on the first list.

Gliese 581 is a red dwarf star located in the Libra constellation, and 581d sits on the outer edge of the Goldilocks zone, so it would be possible for water there to be liquid. In addition, the atmosphere produces a significant greenhouse effect, making it even more hospitable for life (more or less) as we know it. It is, however, 8 times the mass of Earth, so do you think any creatures living there would be Big and Strong? Or Short and Strong? I can’t decide, myself, and I assume it would depend - at least in part - on the biochemistry of the creatures.

If it exists, Gliese 581g sits in the middle of that same habitable zone. Some research says it does exist, other research says it doesn’t. This is only 20 light years away, so let’s go find out, shall we?

WASP-18b is 325 light years away. But since we don’t yet have light-speed travel, we aren’t likely to get there before it dies. Some scientists think it should have already died, before we ever got a glimpse of it. WASP-18b races around its sun in less than 24 hours, but its orbit is apparently degrading, so it’s getting closer and closer to its sun, and in 1 million years (or less?), it will plunge into that star.

WASP-12b is 870 light-years from us. I don’t think we’ll want to settle there, for it is rather warm - 4000°F or 2250°C. It sits only 2 million miles from its sun (Earth is 93 million miles from our sun), and takes just over 1 Earth day to make a complete orbit of that star. It’s also a gaseous planet, with 1.5 times the mass of Jupiter and about twice Jupiter’s size. Obviously, it’s less dense than Jupiter, right? So, even less chance that in all that gas there would be anyplace solid to build a new home. And can you imagine the air conditioning bill?


http://www.popularmechanics.com/space/deep-space/g1265/space-oddities-8-of-the-strangest-exoplanets/
http://www.express.co.uk/news/science/643662/The-10-weirdest-planets-to-have-been-discovered-so-far
www.space.com/159-strangest-alien-planets.html


Thursday, April 16, 2015

Waste Not, Want Not

Years ago, people started talking ‘disposable’. We became a ‘disposable’ culture, in that whenever something didn’t work anymore, we were expected to toss it and get a new one. Shall we blame NASA for that mentality? After all, every time they sent someone or something into space, they had to build a whole new rocket, new capsule, and who knew what.
I hate to blame NASA. I believe in NASA, although I sometimes chaff at how slow their progress can be.
I don’t want to blame NASA, so I blame business. It’s a conspiracy, you know. Business figures that if they sell you something you want and need, but which quickly ceases to work, you’d be back to buy another. And then another.
How long does a ball point pen work? I’m not talking about expensive pens, I’m talking about the cheap ones you buy in packages of 10 or 30, that your workplace buys by the cratefull. They don’t last long. When was the last time you put an ink refill in one? You probably don’t; you just toss it and pull out a new one. They’re cheap, and you don’t even think about it, do you?
Well, pause right now and think about the hundreds, thousands, millions of dead ball point pens taking up space in landfills. Think about what remains of each one; a drop or two of ink, a tiny bit of metal, and the rest is plastic.
One or two million drops of ink would, I assume, eventually lose its ‘moisture’ into the surrounding compost, the color components forming bits of color. Millions of bits of metal would corrode at some point, possibly forming a metallic ‘lode’ for future people to dig up and use.
But what about the plastic? What’s the half-life of plastic? What does it form, if and when it finally breaks down? From what I’ve gathered, most plastics don’t break down in landfills. Some break down when exposed to sunlight for days on end, but when they do, they form nasty toxins. There are newer, ‘biodegradable’ plastics, but they don’t degrade well in landfills, either; they degrade in compost where heat is present. So, millions of plastic pens are thrown into landfills where they will probably remain dead pens for a heck of a long time. If they do manage to degrade, they will form toxins to sicken any plants or animals that ingest them.

Long after I’m dead and gone, all those ball point pens I’ve thrown away will be out there, forming toxins. That is not the kind of legacy I wanted.