4 ordspråk av Joel Primack
Joel Primack
 If we see a star at a large distance from the center of the galaxy, that star is going to be mostly moving either away from the center or back toward the center. Almost certainly, most of its motion is perpendicular to our line of sight. |
| In the merger process that produces these galaxies, a lot of the stars get flung out to fairly large distances, and they end up in highly elongated orbits that take them far away and then back in close to the center. |
| These are very normal, nearby elliptical galaxies that they studied, and if those galaxies don't have dark matter it calls into question the whole theory of cold dark matter. |
| You cannot measure the absolute speeds of the stars, but you can measure their relative speeds along the line of sight, because if a star is moving toward us its light is shifted to shorter wave lengths, and if it is moving away from us its light is shifted to longer wave lengths. |
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This website focuses on proverbs in the Swedish, Danish and Norwegian languages, and some parts including the links below have not been translated to English. They are mainly FAQs, various information and webpages for improving the collection.
Här har vi samlat ordspråk i 12562 dagar!
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varav 1407627 på engelska
Proverb (1469512 st) Search
Categories (2627 st) Search
Authors (167535 st) Search
Photos (4592 st)
Born (10495 st)
Died (3317 st)
Dates (9517 st)
Countries (5315 st)
Idiom (4438 st)
Lengths
Toplists (6 st)
Greetings
Write a greeting
This website focuses on proverbs in the Swedish, Danish and Norwegian languages, and some parts including the links below have not been translated to English. They are mainly FAQs, various information and webpages for improving the collection.
Här har vi samlat ordspråk i 12562 dagar!
Vad är proverb?
Hur funkar det?
Vanliga frågor
Om samlingen
Ordspråkshjältar
Hjälp till!
 |
This website focuses on proverbs in the Swedish, Danish and Norwegian languages, and some parts including the links below have not been translated to English. They are mainly FAQs, various information and webpages for improving the collection.
Här har vi samlat ordspråk i 12562 dagar!
Vad är proverb?
Hur funkar det?
Vanliga frågor
Om samlingen
Ordspråkshjältar
Hjälp till!