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Another Head Scramble. (1 Viewer)

  • Thread starter Flying Fokker
  • Start date Mar 22, 2023
Forums New posts

Flying Fokker

Well-Known Member
  • Mar 22, 2023
  • #1

What is a light-year? - NASA Science

Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year. We use light-time to measure the vast distances of space. It’s the distance that light travels...
exoplanets.nasa.gov
 

Evo1883

Well-Known Member
  • Mar 22, 2023
  • #2
Flying Fokker said:

What is a light-year? - NASA Science

Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year. We use light-time to measure the vast distances of space. It’s the distance that light travels...
exoplanets.nasa.gov
Click to expand...
Here's something else , alot of the stars you see In the sky you are seeing in the past ,or are no longer there
 
Reactions: bezzer, Blind-Faith and Flying Fokker

Evo1883

Well-Known Member
  • Mar 22, 2023
  • #3
 
Reactions: CCFCSteve

Flying Fokker

Well-Known Member
  • Mar 22, 2023
  • #4
Evo1883 said:
View attachment 28806
Click to expand...
That actually makes sense. Think g about it. By the time we see things, they’re history. We interpret them as being real time.
 

skybluetony176

Well-Known Member
  • Mar 23, 2023
  • #5
Evo1883 said:
Here's something else , alot of the stars you see In the sky you are seeing in the past ,or are no longer there
Click to expand...
So essentially time travel.
 

skybluetony176

Well-Known Member
  • Mar 23, 2023
  • #6
I tell you what I did find out and found interesting the other week. The artic and Antarctic circles aren’t fixed, they are constantly moving. Reason being that the earth’s axis isn’t fixed. It constantly pivots by about 4 degrees IIRC, 2 degrees in either direction over hundreds of thousands of years. The circles are basically set by an area that has at least a one day period of 24 hours of total darkness in the winter and 24 hours of daylight in the summer. At the moment the earth is pivoting so that the circles are migrated North. When we get to the end of that pivot we’ll start pivoting back so the circles will start migrating south again.
 
Reactions: Flying Fokker

SkyBlueSoul

Well-Known Member
  • Mar 23, 2023
  • #7
This is an interesting video on light speed

 

shmmeee

Well-Known Member
  • Mar 23, 2023
  • #8
Flying Fokker said:
That actually makes sense. Think g about it. By the time we see things, they’re history. We interpret them as being real time.
Click to expand...

I mean technically that’s true of everything you see, it’s just things close to you are only a split second in the past.
 
Reactions: Sky Blue Pete

Sky_Blue_Dreamer

Well-Known Member
  • Mar 23, 2023
  • #9
Evo1883 said:
Here's something else , alot of the stars you see In the sky you are seeing in the past ,or are no longer there
Click to expand...
I've always thought about if you were millions of light years away with an incredibly powerful telescope you'd be able to see dinosaurs roaming about.

Think of the mysteries we could solve if we could do that. Who was Jack the Ripper? Did Jesus actually exist? Where the fuck did I put my keys?
 
Reactions: Sky Blue Pete and Evo1883

skybluetony176

Well-Known Member
  • Mar 23, 2023
  • #10
Another interesting fact I found out the other week is that the part of planet earth that travels nearest to the sun and moon isn’t Everest despite it being the highest point on the planet. The earth isn’t a perfect sphere, it bulges at the equator so the part of the planet that gets nearest is a volcano in Central America, Tajumulco IIRC.
 

dutchman

Well-Known Member
  • Mar 23, 2023
  • #11
skybluetony176 said:
I tell you what I did find out and found interesting the other week. The artic and Antarctic circles aren’t fixed, they are constantly moving. Reason being that the earth’s axis isn’t fixed.
Click to expand...
And also this is the only period in history that the Earth has had TWO polar ice-caps. In fact, except during a so-called "Ice Epoch" like the one we're experiencing now, it doesn't even have one polar ice cap.
 
Reactions: skybluetony176

richnrg

Well-Known Member
  • Mar 24, 2023
  • #12
Sky_Blue_Dreamer said:
I've always thought about if you were millions of light years away with an incredibly powerful telescope you'd be able to see dinosaurs roaming about.

Think of the mysteries we could solve if we could do that. Who was Jack the Ripper? Did Jesus actually exist? Where the fuck did I put my keys?
Click to expand...
How would the dinosaurs be able to tell you the answers?
 
Reactions: Sky_Blue_Dreamer and Sky Blue Pete
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