Recent study of NASA's Galileo mission points to Ammonia on Europa's surface
Washington DC, January 30
NASA on Thursday said that new analysis of decades-old data has turned up a significant result- the first discovery of ammonia-bearing compounds on the surface of Jupiter's moon Europa.
"Ammonia is a nitrogen-bearing molecule, and nitrogen -- like carbon, hydrogen, and oxygen -- is key to life as we know it. As the first such detection at Europa, the finding has important implications for the geology and potential habitability of this icy world and its vast subsurface ocean", the statement said.
It highlighted that between 1995 and 2003, NASA's Galileo spacecraft studied the Jupiter system, and a recent paper by researcher Al Emran of the agency's Jet Propulsion Laboratory in Southern California re-examined data from the mission's Near-Infrared Mapping Spectrometer.
"Hidden in the data were faint signals of ammonia near fractures on the moon's frozen surface, through which liquid water containing dissolved ammonia compounds would be expected to rise. The compounds may have reached the surface through geologically recent cryo-volcanism", the statement said.
"That's because ammonia significantly lowers the freezing point of water, acting as a sort of antifreeze. Ammonia also has a short lifespan in the space environment. These qualities, combined with the detection appearing near large fractures and pits on Europa's surface, suggest active placement of ammonia-bearing compounds there, from either the moon's subsurface ocean or its shallow subsurface", it further noted.
As per the statement, the finding underscored the ongoing value of legacy datasets collected by previous space missions, which researchers can mine for new discoveries using modern analysis techniques. It also provided a tantalising target for follow-up by the Europa Clipper mission, which arrives at the Jupiter system in April 2030, the statement by NASA's Science Editorial Team said on Thursday.
— ANI
Reader Comments
The fact that they found this in old data is amazing. Shows how important it is to preserve and re-analyze scientific records. Makes you wonder what other secrets are hidden in the archives from Voyager or other missions.
Ammonia as antifreeze in a subsurface ocean... the possibilities are mind-blowing. Europa Clipper can't get there soon enough! 2030 feels so far away. Hope the mission lives up to the hype.
While this is exciting, we must temper our expectations. Detection is one thing, confirmation and understanding the context is another. The article rightly calls it a "tantalising target" – not proof of life. Let's wait for Clipper's data.
Galileo data is still giving gifts! It's a lesson in long-term investment in science. Meanwhile, just imagining a vast, dark, ammonia-laced ocean under that ice... both fascinating and a little terrifying. Nature is the greatest scientist.
The geological activity hinted at—cryo-volcanism near fractures—is the key takeaway for me. An active world is far more interesting than a dead one. Europa continues to be the most promising place in our solar system to look for extraterrestrial life.
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