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This cloud, called the coma, is the atmosphere of the comet and can extend for millions of miles. The cloud is very thin, however, 10,000 times thinner than a cloud in the Earth's atmosphere!
Originally posted by guessing
from where i sit it is sooo white that you need sunglasses to actually look at it at 4 am
that is white....
so where is this god dam nibiru thingy,, hmmmm... hmmmm
It can reach magnitudes of -4.7, which is much brighter than the next planet, Jupiter. This is because of its dense atmosphere, which reflect about 65% of the light hitting them.
Originally posted by Phage
reply to post by UKTruth
Not very huge at all actually. The nucleus of the comet cannot be seen but the coma can.
This cloud, called the coma, is the atmosphere of the comet and can extend for millions of miles. The cloud is very thin, however, 10,000 times thinner than a cloud in the Earth's atmosphere!
www.windows2universe.org...
Originally posted by guessing
is it really impossible to see something 3 miles wide at the distance where Elenin is supposed to be ?
5000 km diameter? Earth is 12,756 km diameter...
if it is this large then when we pass through the tail, presumably in Oct?
But hang on , if it was 5000 odd Km dia , we should easily be able to see it in the night sky?
I just want the truth............... Please, for $%#@$% Sake
Originally posted by Phage
reply to post by UKTruth
Not very huge at all actually. The nucleus of the comet cannot be seen but the coma can.
This cloud, called the coma, is the atmosphere of the comet and can extend for millions of miles. The cloud is very thin, however, 10,000 times thinner than a cloud in the Earth's atmosphere!
www.windows2universe.org...
Originally posted by guessing
Originally posted by Phage
reply to post by UKTruth
Not very huge at all actually. The nucleus of the comet cannot be seen but the coma can.
This cloud, called the coma, is the atmosphere of the comet and can extend for millions of miles. The cloud is very thin, however, 10,000 times thinner than a cloud in the Earth's atmosphere!
www.windows2universe.org...
So in this case if the Coma? dia or the visible is 5300 km then how does one calculate the actual comet diameter?
I am sensing that no one really actually knows the true size of Elenin.edit on 24-3-2011 by guessing because: (no reason given)
Originally posted by nataylor
reply to post by Artorius
Yes, easily. At its current distance, if it was the size of Earth, it would be bigger and brighter than Mars.
Sunlight reflects off dust as well. That's why we can see comet tails in the first place. However, being they are so diffuse, they reflect much less light than a solid object. Hence, since Elenin is so dim, we know that the nucleus is very small and all we're seeing is light reflecting off the dust in the coma.
Originally posted by heineken
but remember..that since we know nearly to nothing about this comet..the cloud surrounding tit might be preventing sun light to be reflected right..since mars and other planets glow because of reflecting sun light...so we cant really estimate the size of it depending on how much light it is reflecting
well How is it gonna have any effect on earth when it is that far away
Originally posted by nataylor
And another way of putting Elenin's distance in perspective. At its closest point to Earth, it will be nearly as far away (within 17%) as the minimum distance between Venus and Earth.
The Ninth Wave (Russian: Девятый вал, literally The Ninth Wave) is perhaps the most impressive and well-known painting by Russian marine painter Ivan Aivazovsky; it was painted in 1850.