How big is a star?
Every star you see in the night sky is bigger and brighter than our sun. Of the 5,000 or so stars brighter than magnitude 6, only a handful of very faint stars are approximately the same size and brightness of our sun and the rest are all bigger and brighter.
Of the 500 or so that are brighter than 4th magnitude (which includes essentially every star visible to the unaided eye from a urban location), all are intrinsically bigger and brighter than our sun, many by a large percentage.
Of the brightest 50 stars visible to the human eye from Earth, the least intrinsically bright is Alpha Centauri, which is still more than 1.5 times more luminous than our sun, and cannot be easily seen from most of the Northern Hemisphere.
It’s hard to comprehend the sheer size of objects in space, but let’s give it a try!
Video
Credit/Courtesy: ESO
#ESO #NASA #space #science #stars #cosmos
https://www.youtube.com/watch?v=nAwTftmph68
On the map of the universe, on top a mote of dust, on top a mote of dust, on top the head of a pin is a sign that says 'you are here'.
ReplyDeleteI cannot be impressed by the scale of mountains any longer.
Thanks for sharing miss Corina....:-)....
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