Tag: stars

Science or Fiction?

Science or Fiction?

bookcarlsaganOne of my all time favorite authors and human beings was Carl Sagan. Many people have heard of his book “Pale Blue Dot” which he wrote after having the Voyager turn its camera back toward Earth on its way out of our solar system.

Science Non-Fiction was his specialty. The technology of a book, of writing, was rejected in the early days of civilization. Story telling was considered the only form of communication worthy, because of the nuances, inflections, gestures, and passion that accompanied the transmission of the words. The argument in favor of writing was that no matter if the original story teller was alive or dead, the story would be told, eternally, as it was written.

And that is what we have now. We look at a new way of communicating, through electronic media, just as this is. But it is written. So are emails, texts, even screen plays and computer games. They are all written, using language with a specific style, intent, or format. In the late 70s, part of the math curriculum was learning to count in a different bases – 8 and 12. The logic behind this was that for the 8 base, computers loomed ahead in our future. For the 12 base, we could use it to convert ourselves to metric. The official words for these are octal and duodecimal.

I can understand the octal system. I can also understand the duodecimal. But we have ten fingers and toes. I began wondering if my aliens that only have 8 fingers and toes counted in an octal system and understood the binary system, since ten is not divisible by four or eight. I also wonder why in hell the USA is still using a base of twelve for measurements when ten is so incredibly easier by a magnitude of, well, exponentially.

Here’s a couple curious facts about the 8-10-12 dilemma.

Clocks are made for twelve, although they could have just as easily been made for ten. A circle doesn’t have to have 360 degrees, it could have had 500 or 100. They would just simply be different sizes.

Metrics are based on the size of the earth and the volume/weight of desalinated water. These are a nice constant but even that changes over long (long) periods of time and micro mineral content.  Imperial measures were based on some guy’s foot.

How did a mile come to be 5280 feet? Why not 5000? Something about how much ground a horse could cover in a certain amount of time. Same for horsepower – logs being pulled up a cliff face. But those are entirely other conversations.

I digress. My thoughts for Carl Sagan and books are for the need to read and communicate, to educate ourselves as well as entertain ourselves. In a world full of violence it is nice to stop and escape, nay, essential to do so as it is to eat or sleep or even breathe the air. Education is the key to virtually all of the problems we face – and once a person leaves the cave and sees the world in color, not shadows, in 3D, not projections on a flat wall, they can never return, and in doing so, we can all finally move forward.

 

Moon Day

Moon Day

Artist's impression of the trio of super-Earths discovered by an European team using the HARPS spectrograph on ESO's 3.6-m telescope at La Silla, Chile, after 5 years of monitoring. The three planets, having 4.2, 6.7, and 9.4 times the mass of the Earth, orbit the star HD 40307 with periods of 4.3, 9.6, and 20.4 days, respectively.
Artist’s impression of the trio of super-Earths discovered by an European team using the HARPS spectrograph on ESO’s 3.6-m telescope at La Silla, Chile, after 5 years of monitoring. The three planets, having 4.2, 6.7, and 9.4 times the mass of the Earth, orbit the star HD 40307 with periods of 4.3, 9.6, and 20.4 days, respectively.

I like to challenge the brain on a regular basis. Now I’m going to challenge your brain.  Don’t look up the answer on the internet right away, this is a private process for your brain only.

True or False:  The nearest earth type planet discovered by humans is only 4 light years away.

Think about that for a minute. Four light years, if we could travel the speed of light, would take, well, four years to reach (at a speed of 186,000 miles per second, or seven times around the diameter of the earth).  If we could go ten times the speed of light, it would still take more almost five months (speed of 1,860,000 miles per second). It takes eight minutes for the light of our sun to reach the earth. Four light years is pretty far away. At 17,000 mph, the current average space shuttle speed, it would take 165,000 years to reach a planet 4 light years from here.

And the truth is the closest earth-like planet discovered is 11.9 light yeas away around the sun-like star Tau Ceti. Now triple all the figures above. Half a million years to get there with today’s technology? That’s the disappointing fact. Even a generational ship is a pretty far stretch of the imagination. And yet we still dream of discovering life on other planets, shaking hands with extra terrestrials, or at least finding an amoebae we can bring home in a Petri dish.   So what do we do?

We keep hunting nearby, we keep studying whatever we can, and we don’t stop reaching for the stars.

Splendor in the Gas

Splendor in the Gas

OK, that’s a little cheesy, but we don’t have grass in Las Vegas, just cactus and rocks. So let me slide on this one. I wanted to share an inspirational photo, taken by the Hubble a few years ago. It’s truly jaw dropping beautiful gas forming a nebula, a stellar nursery.

NGC 6357 is a dreadful name for this amazing cosmic creation, about 8000 light years from us, also known as the Lobster  Nebula, and the War and Peace Nebula, visible in the constellation Scorpio. Some of the most massive stars in the Milky Way are found here.NGC6357 (2)

 

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