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Originally posted by pazcat
You just need to do a spectroscope reading of any star and it will tell you exactly what it is made from and how much of what elements. Even amature astronomers are able to do this if that is the path they choose.
Life could exist in the ocean on the moon Europa that orbits around Jupiter.
This "tidal heating" causes Europa to be warmer than it would otherwise be at its average distance of about 780,000,000 km (485,000,000 miles) from the sun, more than five times as far as the distance from the Earth to the sun. The warmth of Europa's liquid ocean could prove critical to the survival of simple organisms within the ocean, if they exist.
Another liquid ocean! The "Goldilocks Zone" is bunk, for the most part.
Covered in water ice that reflects sunlight like freshly fallen snow, Enceladus reflects almost 100 percent of the sunlight that strikes it. Because Enceladus reflects so much sunlight, the surface temperature is extremely cold, about -201° C (-330° F).
There are fissures, plains, corrugated terrain and other crustal deformations. All of this indicates that the interior of the moon may be liquid today, even though it should have been frozen eons ago.
I really believe that they should modify the term to something like "Earthborn Sustaining Zone".
Originally posted by Devino
reply to post by Ophiuchus 13
I never liked the term "Goldilocks Zone" as it claims knowledge that we do not yet have. It assumes that the Earth is in a habitable zone for life and that all the other planets and moons in our solar system are not, making life there non-existent. Mars appears dead not because it is too far from the Sun but because it has too thin an atmosphere. Venus has too thick an atmosphere and too much heat and this is not necessarily because it is too close to the Sun.