Sunday , May 16 2021

If the Moon Were Only 1 Pixel (2014), Hacker News


(Mercury) *************


Venus

Earth

You Are Here

Moon)

. ********************.Mars

Jupiter


******************
************************ (Io) ************

**************Europa**************************
************************** Ganymede****************
**************************** Callisto**************

**************************** Saturn


**************************************** (Titan)

Uranus

********
Neptune

****************************** (Pluto) ************************************************
(we still love you)

That was about (million km) 6, (**********************************************************************************************************************, (mi) just now.

Pretty empty out here.

Here comes our first planet …

As it turns out, things are pretty far apart.

We’ll be coming up on a new planet soon. Sit tight.

Most of space is just space.

Halfway home.

Destination: Mars!

It would take about seven months to travel this distance in a spaceship.

************************************************************************ Better be some good in-flight entertainment.

In case you’re wondering, you’d need about feature-length movies to occupy that many waking hours.

Sit back and relax. Jupiter is more than 3 times as far as we just traveled.

When are we gonna be there?

Seriously. When are we gonna be there?

This is where we might at least see some asteroids to wake us up.

************************************************************************** Too bad they’re all too small to appear on this map.

I spy, with my little eye … something black.

If you were on a road trip, driving at 99 mi / hr, it would have taken you over 2006 years to get here from earth.

All these distances are just averages, mind you.**************************************

(The distance between planets really depends on where the two planets are in their orbits around the sun.) (*************So if you’re planning on taking a trip to Jupiter, you might want to use a different map.

(If you plan it right, you can actually move relatively quickly between planets.

() ************** The New Horizons space craft that launched in****************************************************************************************** (only took 75 months to get to Jupiter.************************************************ Don’t worry. It’ll take a lot less than months to scroll there. 

Pretty close to Jupiter now.

 

Sorry. That was a lie before. Now we really are pretty close.

 

Lots of time to think out here …

 

Pop the champagne! We just passed 1 billion km.

  

I guess this is why most maps of the solar system aren’t drawn to scale.

********************************************** It’s not hard to draw the planets.****************************It’s the empty space that’s a problem. 

Most space charts leave out the most significant part – all the space.

  

We’re used to dealing with things at a much smaller scale than this.

 

When it comes to things like the age of the earth, the number of snowflakes in Siberia, the national debt …

************************************************************************** Those things are too much for our brains to handle.   

We need to reduce things down to something we can see or experience directly in order to understand them.

 

We’re always trying to come up with metaphors for big numbers. Even so, they never seem to work.

  

Let’s try a few metaphors anyway …

  

You would need

****************************************************************************************************************** of these screens lined up side-by-side to show this whole map at once.   

(If this map was printed from a quality printer (300 pixels per inch) the earth would be invisible, and the width of the paper would need to be (feet. *************************************************************************** 823 feet is about 1 and 1/2 football fields.

   

Even though we don’t really understand them, a lot can happen within these massive lengths of time and space.A drop of water can carve out a canyon.

************************************************ (************************************************************************ (An amoeba can become a dolphin.) ********************************************************** () ************** (A star can collapse on itself.) *************  

It’s easy to disregard nothingness because there’s no thought available to encapsulate it. There’s no metaphor that fits because, by definition, once the nothingness becomes tangible, it ceases to exist.

     

It’s a good thing we have these tiny stars and planets, otherwise we’d have no point of reference at all.**************************************************************************** We’d be surrounded by this stuff that our minds weren’t built to understand.

    

All this emptiness really could drive you nuts. For instance, if you’re in a sensory deprivation tank for too long, your brain starts to make things up. You see and hear things that aren’t there.

     

The brain isn’t built to handle “empty.”

   

“Sorry, Humanity,” says Evolution. “What with all the jaguars trying to eat you, the parasites in your fur, and the never-ending need for a decent steak, I was a little busy. I didn’t exactly have time to come up with a way to conceive of vast stretches of nothingness. “

   

Neurologically speaking, we really only deal with matter of a certain size, and energy of a few select wavelengths. For everything else, we have to make up mental models and see if they match up to the tiny shreds of hard evidence that actually feel real.

      

The mental models provided by mathematics are extremely helpful when trying to make sense of these vast distances, but still …

************************** Abstraction is pretty unsatisfying.       

When you hear people talk about how, “there’s more to this universe than our minds can conceive of” it’s usually a way to get you to go along with a half-baked plot point about UFOs or super-powers in a sci-fi series that you’re watching late at night when you can’t get to sleep.

      

Even when Shakespeare wrote: “There are more things in heaven and earth, Horatio, Than are dreamt of in your philosophy” – he’s basically trying to give us a loophole to make the ghost in the story more believable.

             

But all this empty space, these things of a massive scale, really are more than our minds can conceive of. The maps and metaphors fail to do them justice.

      

You look at one tiny dot, then you look for the next tiny dot. Everything in between is inconsequential and fairly boring.

      

Emptiness is actually everywhere. It’s something like******************************************************************************** (% of the known universe.)       

Even an atom is mostly empty space.

      

If the proton of a hydrogen atom was the size of the sun on this map, we would need 11 more of these maps to show the average distance to the electron.

      

Some theories say all this emptiness is actually full of energy or dark matter and that nothing can truly be empty …

********************************************************************************** but come on, only ordinary matter has any meaning for us.      

You could safely say the universe is a “whole lotta nothing.”

If so much of the universe is made up of emptiness, what does that mean to people like us, living on a tiny speck in the middle of all of it?

        

Is the known universe% empty?

********************************************(Or is it 0.) % full?         

With so much emptiness, aren’t stars, planets, and people just glitches in an otherwise elegant and uniform nothingness, like pieces of lint on a black sweater?

        

But without the tiny dots for it to stretch between, there would be no emptiness to measure, and for that matter, no one around to measure it.

        

You might say that so much emptiness makes the tiny bits of matter that much more meaningful – simply by the fact that, against all odds, theyaren’tempty.

******************************If you’re drowning in the middle of the ocean, a floating piece of driftwood is a pretty big deal.
        

What if trillions of stars and planets were crammed right next to each other? They wouldn’t be special at all.

        

It seems like we are both pathetically insignificant, and miraculously important at the same time.        

Whether you more strongly feel the monumental significance of tiny things or the massive void between them depends on who you are, and how your brain chemistry is balanced at a particular moment.

We walk around with miniature, emotional versions of the universe inside of us.

        

It’s reassuring to know that no matter how depressingly bleak or ridiculously momentous we feel, the universe, judging by its current structure, seems well aware of both extremes.

  

The fact that you’re here, in the midst of all this nothing, is pretty amazing when you stop and think about it.

Congratulations on making it this far.

(******* (**********************************************************************************************
**************

This is how fast light travels …

It’s the fastest speed allowed by the universe. ..

Seriously.

If you’re in a hurry to get somewhere in space …

you’ll need to take it up with Mr. Einstein.

(****************************************************************************************************************************************************************************************************************************************************** (Read More) ********************************************************************************************** (****************************************************************************************************** () **********************************************************************************************

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