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Not so dry after all: Moon's water came mostly from asteroids, not comets, study says
The moon had long been thought to be exceedingly dry, based on rocks brought back by NASA’s Apollo lunar missions starting in the late 1960s. But more advanced techniques in recent years have actually picked out significant signs of water in those samples, said study coauthor David Kring, a planetary scientist at the Lunar and Planetary Institute in Houston. In fact, he added, though the surface is parched, the lunar interior might actually have about 10,000 to 10 million times more water than the surface seems to hold.
“Basically, whatever was happening on the moon was happening on the Earth,” Kring said.
The findings could also help scientists adjust their understanding of the forces at play in the larger solar system, Kring added. After all, if the majority of the moon’s water during this time period came from asteroids, it meant that the comets were not getting dragged out of their distant, elliptical orbits and yanked into the inner solar system.
The theory that comets predominantly brought water to Earth (and other bodies) requires some pretty notable movements or accretion rates on the part of gas giants like Jupiter, which are the only planetary bodies massive enough to exert the necessary gravitational pull. If most of the water instead came from asteroids, it might offer scientists new clues into the behavior of Jupiter and its cohorts during this time period, the scientist said
originally posted by: Misterlondon
The moon is not covered in water.. He is speculating the moon may contain water in its interior..
In fact, he added, though the surface is parched, the lunar interior might actually have about 10,000 to 10 million times more water than the surface seems to hold
But more advanced techniques in recent years have actually picked out significant signs of water in those samples, said study coauthor David Kring, a planetary scientist at the Lunar and Planetary Institute in Houston.
originally posted by: Kandinsky
a reply to: odzeandennz
Water was found on the Moon in very recent years.
We're not talking about standing ground water though; it's more like wringing out a dry sponge and feeling a slight amount of moisture in there.
originally posted by: DJW001
a reply to: odzeandennz
Water molecules are not found on the Moon. There may be some subsurface frost, but anything on the surface would sublimate. Most of the water believed to be on the Moon would be found as hydroxyls bound up in silicates: rocks and dust. The exciting thing is that these hydroxyls can be extracted and turned into water, oxygen, and hydrogen (which can be used as a fuel).
originally posted by: Kandinsky
a reply to: odzeandennz
Water was found on the Moon in very recent years.
We're not talking about standing ground water though; it's more like wringing out a dry sponge and feeling a slight amount of moisture in there. Irrc, we could scoop out a 1 metre cubed block of crater regolith and, under heat, it would evaporate a small amount of water hence the dry sponge analogy.
Moon's water came mostly from asteroids, not comets, study says
While asteroids consist of metals and rocky material, comets are made up of ice, dust, rocky materials and organic compounds.
originally posted by: ZeroFurrbone
First was Mars, now the Moon.. What's next? Water on Earth?
originally posted by: network dude
originally posted by: ZeroFurrbone
First was Mars, now the Moon.. What's next? Water on Earth?
Look, this is a conspiracy site, but let's not go all "crazy" here. Keep it within the realm of possibilities.