PDA

View Full Version : Keeping things in proportion



nebularain
2003-Jun-23, 08:17 PM
I thought I'd completely WOW! my dad by showing him this picture of Earth in relation to a prominance of the sun (http://star.arm.ac.uk/~epb/images_work/flare-earth.jpg) . (Now tell me that doesn't just make you go, "Wow!" or the equivalent. :D )

About 5-10 minutes after I showed him this picture, he made an interesting comment to me about it. I don't remember the exact words, but in his mind he had compared this picture with movie and TV shots of a space ship going around the sun and realized just how bogus those portrayals are (either the ship is wa-a-a-a-a-a-a-a-y too big or the sun is wa-a-a-a-a-a-a-a-y too small. (Hee! Hee! He's learning. :wink: )

But that got me thinking. You know those SOHO (http://www.badastronomy.com/bad/misc/planetx/soho.html) pictures (http://www.cyberspaceorbit.com/indexback46.html) . . . ?

pi is exactly 3
2003-Jun-23, 10:57 PM
I really make you streach you mind and make you realize that you can't even really concive the size of the sun let alone the universe.

tracer
2003-Jun-23, 11:15 PM
I thought I'd completely WOW! my dad by showing him this picture of Earth in relation to a prominance of the sun (http://star.arm.ac.uk/~epb/images_work/flare-earth.jpg) .
Aaaaaah! The Earth's about to fry!! Run for cover!!!

The Supreme Canuck
2003-Jun-23, 11:19 PM
Eeek! :o

Brett-NZ
2003-Jun-24, 01:02 AM
... compared this picture with movie and TV shots of a space ship going around the sun and realized just how bogus those portrayals are (either the ship is wa-a-a-a-a-a-a-a-y too big or the sun is wa-a-a-a-a-a-a-a-y too small.

That reminds me of the ST:Voyager intro credits where the ship flies over the the rings of a gas giant. A gas giant that can't be bigger than a few kilometers in diameter.

The Supreme Canuck
2003-Jun-24, 01:05 AM
It also flies through a solar flare and appears to be about a quarter the size of the star. Whoops.

Argos
2003-Jun-24, 01:02 PM
Itīs interesting. That prominence has the apparent diameter of Jupiter...

nebularain
2003-Jun-24, 04:48 PM
But that got me thinking. You know those SOHO (http://www.badastronomy.com/bad/misc/planetx/soho.html) pictures (http://www.cyberspaceorbit.com/indexback46.html) . . . ?

I was just wondering if anyone caught this . . . .

If those images were indeed spacecraft flying about the sun, they would be larger than the earth!

Donnie B.
2003-Jun-24, 05:40 PM
Another thing you can glean is just how long a comet's tail can be -- it's a significant fraction of the size of the solar disc in many of the SOHO pics.