Overview: The planet Saturn has long been an object of fascination for humanity. Galileo suspected there was something remarkable about this planet, but the optics of his telescope were not quite good enough to reveal Saturn’s true nature. In 1655, the Dutch astronomer Christiaan Huygens realized that Saturn was surrounded by an astonishing system of rings. Through even a medium sized telescope, the rings present an unforgettable sight of exquisite beauty. The rings are made up of uncountable billions of orbiting chunks of water ice, mixed with traces of rocky material. The physics of the ring system continue to be a source of ongoing research by modern astronomers.
Saturn is a “gas giant” composed mainly of hydrogen and helium, and is accompanied by a retinue of more than 100 known moons. One of them, Enceladus, possesses an underground ocean of liquid water, which could even harbour life. Powerful geysers erupting near the south pole of Enceladus send water and dissolved chemicals careening outwards into space. Saturn’s largest moon, Titan, is the only place besides Earth known to have liquids on its surface.
Since the 1970s, several robotic spacecraft have flown by Saturn for close-up reconnaissance of this stunning world and its moons. In 2005, a European probe the size of a large refrigerator parachuted down to a soft landing on the surface of Titan. For 13 years, from 2004-17, NASA’s Cassini spacecraft orbited Saturn, taking thousands of photographs and scientific measurements.
We continue to learn more about this fascinating, beautiful planet, which is truly the “jewel of the solar system”.
Lecture Biography: Howard Simkover graduated as the leading student in McGill University’s Faculty of Electrical Engineering, and was awarded the British Association Medal for Great Distinction. His professional career has been in the field of telecommunications with Bell Canada and also in management consulting.
Howard’s lifelong interest in astronomy began at age 7. He later became active in the Royal Astronomical Society of Canada, where he served on the Observation Committee and the Board of Directors of the Montreal Centre.
For more than two decades, Howard produced numerous shows and lectured on astronomy at the Planétarium de Montréal. He has also lectured at the Canada Science & Technology Museum in Ottawa and at Carleton University. He continues to speak about astronomy to audiences in the National Capital Region, and to groups elsewhere in the world via Zoom technology. He owns and regularly uses several telescopes to observe the sky. |