Humans still do not even understand water or where it came from! I have blogged here about this subject (mystery of water) several times!
One more reason that Global Warming is a hoax and Climate Change is a religion!
"... A new study published in the journal Nature brings scientists one step closer to answering that question. ... researchers analyzed melted meteorites that had been floating around in space since the solar system's formation 4 1/2 billion years ago. They found that these meteorites had extremely low water content—in fact, they were among the driest extraterrestrial materials ever measured.
These results, which let researchers rule them out as the primary source of Earth's water, could have important implications for the search for water—and life—on other planets. It also helps researchers understand the unlikely conditions that aligned to make Earth a habitable planet. ..."
These results, which let researchers rule them out as the primary source of Earth's water, could have important implications for the search for water—and life—on other planets. It also helps researchers understand the unlikely conditions that aligned to make Earth a habitable planet. ..."
From the abstract:
"The timing of delivery and the types of body that contributed volatiles to the terrestrial planets remain highly debated. For example, it is unknown if differentiated bodies, such as that responsible for the Moon-forming giant impact, could have delivered substantial volatiles or if smaller, undifferentiated objects were more probable vehicles of water delivery. Here we show that the water contents of minerals in achondrite meteorites (mantles or crusts of differentiated planetesimals) from both the inner and outer portions of the early Solar System are ≤2 μg g−1 H2O. These are among the lowest values ever reported for extraterrestrial minerals. Our results demonstrate that differentiated planetesimals efficiently degassed before or during melting. This finding implies that substantial amounts of water could only have been delivered to Earth by means of unmelted material."
Degassing of early-formed planetesimals restricted water delivery to Earth (no public access)
No comments:
Post a Comment