# Why it's news that SOFIA found water when it's already been found?

Back in 2008, India proved water on moon.

India's ISRO spacecraft Chandrayaan-1 released the Moon Impact Probe (MIP) that impacted Shackleton Crater, of the lunar south pole, at 20:31 on 14 November 2008 releasing subsurface debris that was analysed for presence of water ice.

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But again NASA proved water on moon by Stratospheric Observatory for Infrared Astronomy (SOFIA):

Source

Why it's news that SOFIA found water when it's already been found by ISRO?

• The real reason is that NASA is desperately trying to justify their hundred million dollar boondoggle.. – Richard Oct 27 '20 at 20:58
• From your first link: "Previous observations of the Moon`s surface detected some form of hydrogen, but were unable to distinguish between water [H2O] and its close chemical relative, hydroxyl (OH)". I was under the impression this was what made the recent discovery notable. – NotThatGuy Oct 28 '20 at 15:29
• Even if it wasn't a new finding at all, this wouldn't mean it's scientifically worthless. Replication studies are actually important, if often neglected, part of the scientific method. – leftaroundabout Oct 29 '20 at 0:26

It is news because the 6.1 $$\mu$$m wavelength measured is unique to $$\rm{H_2O}$$. All prior evidence included $$\rm{OH}$$ groups as well, thus did not show clear proof of presence of "$$\rm{H_2O}$$".
So, now we know there is $$\rm{H_2O}$$ and not just any random $$\rm{OH}$$ group containing moleculas.
Anyway, the amount measured still is ~100x less water per $$\rm{m^3}$$ than in the Sahara desert.