Enceladus

Quick Facts: Who was Enceladus?

Subject:

Enceladus

Known for:

Saturn's icy moon, famous for its geyser-like plumes and subsurface ocean.

Verified Source:

2Day Chrono-Wiki & Primary Historical Archives

Origins & Early Life

Enceladus is the sixth-largest moon of Saturn and the 18th largest in the Solar System. It is about 500 kilometres (310 miles) in diameter, about a tenth of that of Saturn's largest moon, Titan. It is covered by clean, freshly deposited snow hundreds of meters thick, making it one of the most reflective bodies of the Solar System.

Career & Major Achievements

Consequently, its surface temperature at noon reaches only −198 °C (75.1 K; −324.4 °F), far colder than a light-absorbing body would be. Despite its small size, Enceladus has a wide variety of surface features, ranging from old, heavily cratered regions to young, tectonically deformed terrain. Enceladus was discovered on August 28, 1789, by William Herschel, but little was known about it until the two Voyager spacecraft, Voyager 1 and Voyager 2, flew by Saturn in 1980 and 1981.

Enduring Legacy & Impact

In 2005, the spacecraft Cassini started multiple close flybys of Enceladus, revealing its surface and environment in greater detail. In particular, Cassini discovered water-rich plumes venting from the south polar region.

Chronological Milestones & Life Events

1. 1789: 1789 Milestone — Enceladus was discovered on August 28, 1789, by William Herschel, but little was known about it until the two Voyager spacecraft, Voyager 1 and Voyager 2, flew by Saturn in 1980 and 1981.
2. 2005: 2005 Milestone — In 2005, the spacecraft Cassini started multiple close flybys of Enceladus, revealing its surface and environment in greater detail.

Historical Fact-Check Quiz: Enceladus

True or False: “Enceladus's plumes are composed of water vapor, molecular hydrogen, and sodium chloride crystals, which strongly suggests the presence of a liquid subsurface ocean.”

Answer (TRUE ⭕): The detection of these specific, volatile materials, especially in conjunction with evidence of tidal heating, provides compelling evidence for a vast, liquid water reservoir beneath the icy shell.

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Frequently Asked Questions about Enceladus