Friday, 9 January 2015

ARE COMETS COVERED IN AN ENVELOPE...?



People doubt that are the comets are covered in an envelope..?  Here is the answer for them.....


As a comet absorbs ultraviolet light, chemical processes release  hydrogen, which escapes the comet's gravity and forms a hydrogen envelope. This envelope cannot be seen from Earth, because its light is absorbed by our atmosphere, but it has been detected by spacecrafts.


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