रहस्यमई निशान-चिन्ह || NASA Missions Provide New Insights into 'Ocean Worlds' in Our Solar System

Before NASA’s Cassini mission, Saturn's moon Enceladus was thought to be like many of the countless objects in our solar system — cold, small and well outside the habitable zone — yet scientists still thought it worthy of a closer look.

“The first observations of Enceladus showed it as a tiny white dot, brighter but not unlike other moons of Saturn,” said Linda Spilker, the Cassini mission’s project scientist. “It was so small we never thought it might be a prime astrobiology target.”

Over about 10 years starting in 2005, however, Cassini’s discoveries elevated the small, icy moon to its rightful place alongside Mars and Jupiter's moon Europa — thought to be the best places beyond Earth to search for conditions suitable for past or present life. Because of Cassini, Enceladus is now one of the most consequential objects in the solar system.

NASA Missions Provide New Insights into 'Ocean Worlds' in Our Solar System

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