Saw it mentioned years ago and just done a google search.
Taking color pictures with the Hubble Space Telescope is much more complex than taking color pictures with a traditional camera. For one thing, Hubble doesn't use color film — in fact, it doesn't use film at all. Rather, its cameras record light from the universe with special electronic detectors. These detectors produce images of the cosmos not in color, but in shades of black and white. Finished color images are actually combinations of two or more black-and-white exposures to which color has been added during image processing. The colors in Hubble images, which are assigned for various reasons, aren't always what we'd see if we were able to visit the imaged objects in a spacecraft. We often use color as a tool, whether it is to enhance an object's detail or to visualize what ordinarily could never be seen by the human eye.
I'm found that out recently as well - a lot of it is guesstimated. Impossible to get that level of detail considering the distance stars/planets are away from us
I read last week that scientists believe that there are 10 times more stars in the known universe than grains of sand on earth. 27,000,000,000,000,000,000,000,000 and each has at least 1 orbiting planet.
I read last week that scientists believe that there are 10 times more stars in the known universe than grains of sand on earth. 27,000,000,000,000,000,000,000,000 and each has at least 1 orbiting planet.
nobody can really know the number of stars or grains of sand to a factor of 10, although the estimates for each are broadly similar in scale - about 10^22 to 10^24 stars in the whole universe and 10^20 to 10^27 for the number of grains of sand on earth.
Of course other planets have sand so there can be virtually no doubt that there are more sand grains in the universe than stars.
I read last week that scientists believe that there are 10 times more stars in the known universe than grains of sand on earth. 27,000,000,000,000,000,000,000,000 and each has at least 1 orbiting planet.
nobody can really know the number of stars or grains of sand to a factor of 10, although the estimates for each are broadly similar in scale - about 10^22 to 10^24 stars in the whole universe and 10^20 to 10^27 for the number of grains of sand on earth.
Of course other planets have sand so there can be virtually no doubt that there are more sand grains in the universe than stars.
Love it!! Nothing more fascinating than a clear night sky without any light pollution; real escapism.
I can often be seen trawling round the fields in Norwich with my phone pointing up to the sky, using my star gazing 'sky map' app!! Gets a bit difficult to explain away when I'm near the nunnery and local nurses accommodation but managed so far to baffle em with my obscure night sky facts. Think I'm seen as quite a catch when I start talking about alpha centauri (not that you can see the bugger here!) and Betelgeuse!!
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Absolutely obsessed with space and in particular Brian Cox.
Wonders of the Universe was an amazing series.
He looks like the kind of guy that would be a trainspotter were he not a star spotter... Is he a secret Charlton fan?
Taking color pictures with the Hubble Space Telescope is much more complex than taking color pictures with a traditional camera. For one thing, Hubble doesn't use color film — in fact, it doesn't use film at all. Rather, its cameras record light from the universe with special electronic detectors. These detectors produce images of the cosmos not in color, but in shades of black and white.
Finished color images are actually combinations of two or more black-and-white exposures to which color has been added during image processing.
The colors in Hubble images, which are assigned for various reasons, aren't always what we'd see if we were able to visit the imaged objects in a spacecraft. We often use color as a tool, whether it is to enhance an object's detail or to visualize what ordinarily could never be seen by the human eye.
My telescope fund might have to get a boost this month.
Of course other planets have sand so there can be virtually no doubt that there are more sand grains in the universe than stars.
this is where i read it. i agree its impossible to know but still a mind blowing number.
m.youtube.com/watch?v=KaOC9danxNo&desktop_uri=%2Fwatch%3Fv%3DKaOC9danxNo
I can often be seen trawling round the fields in Norwich with my phone pointing up to the sky, using my star gazing 'sky map' app!! Gets a bit difficult to explain away when I'm near the nunnery and local nurses accommodation but managed so far to baffle em with my obscure night sky facts. Think I'm seen as quite a catch when I start talking about alpha centauri (not that you can see the bugger here!) and Betelgeuse!!
Edit: And Depeche Mode!!