Starry starry night...

[nytecam]

Originally Posted by posie

As Nytecam explained above....
It is the distance that light can travel in a year. In other words it is a linear measurement. Light travels at 300 km per second. so a light year presented in kms is 300kms x 86,400 (seconds in a day) x365 (days in a year) = 9,460,800,000 kms per year. (I think ).......Posie,,,

Three '000s' lost in above calc as light travels 300,000Km/s so above Km/year [eg 1 light year] needs be be multiplied x1000

[posie]

Originally Posted by nytecam

Three '000s' lost in above calc as light travels 300,000Km/s so above Km/year [eg 1 light year] needs be be multiplied x1000

(Hangs head in shame !)
Yes, SORRY, my mistake, I lost the three noughts when I referred to your original explanation...So it's ..9,460,800,000,000 Kms per year= 1 lightyear......THAT'S BETTER.!

[nytecam]

That's better Here's the Intergalactic Wanderer NGC 2419 in Lynx - a remote ball of thousands of stars called a globular cluster that, according to Wikipedia, is 300,000 LY away at the edge of our Milky Way [MW] galaxy and takes 3,000,000,000 years to orbit the MW eg only 1.5 orbits since the earth came into existance 4.5B years ago

[posie]

.....

.....WOW ! ...

[artdemole]

might not be able to see any thing if DARK FLOW on HORIZON bbc2 9.00 tonight comes our way

[pressld2]

Originally Posted by foxy mars

What is a light year.

For dinosaurs like me who still think in imperial measurements, light travels at 186,282 miles per second which makes a light year 5,874,589,152,000 miles.

Super pics Nytecam and thanks for the technical details on how they were taken too.

Dave P.

[artdemole]

Check Out--bbc news--science+enviroment.-Planck Spies Massive Dust clouds.GO TO bottom of page--Science explained-What is a light year..MIght shed some Light on the subject...