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- 2025 - SATURN - Huygens lands on Titan. This Review is about her biggest moon, Titan. Titan is bigger than the planet Mercury. The Huygens Space Probe went through Titans thick atmosphere and landed safely on the surface operating for another 72 minutes.
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TO LEARN MORE, CLICK ON ADDRESS BELOW: FEEDBACK ENCOURAGED
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- It is camera that most of us are fascinated with. These pictures made n 2005 were of another land. To get them scientists had to overcome a couple special challenges. The team on Earth was receiving nothing but nonsense from Huygen’s precious stream of data. The radio receiver was not handling the Doppler shift of incoming signals. The landing had to be engineered to avoid motions that caused these shifts in frequency. Titan flybys had to slow down each pass to release the probe gently to minimize any Doppler shifts with the Probe’s transmissions.
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- Next the transmissions were to be sent over two separate channels. But, programming errors would not allow channel A to be turned on. Half of the images were lost forever. Released December 24, 2004, the probe had a 3 week fall through space before entering Titan’s atmosphere. Huygens deployed a large parachute and blew off its heat shield. It drifted for 89 miles sampling the atmosphere during descent. After 15 minutes it continued to descending with a smaller parachute.
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- The probe landed gently on the surface of damp sand. Channel B recorded 100 images over the next 72 minutes. The pictures showed river beds, small channels feeding larger rivers. The highlands were pictured with jagged rocks and canyons created by methane rain erosion. Liquid methane was also welling up from beneath the ground.
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- The decent through the atmosphere found mostly nitrogen and methane. Conclusion were that this atmosphere was delivered by bombardments of space rocks. The atmosphere on Earth was formed in the same way. In fact tholin molecules were detected which are thought to be the same building blocks for life on Earth.
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- Tholins are organic compounds formed by ultraviolet radiation or cosmic rays radiating simple carbon containing compounds like carbon dioxide, methane or ethane in combination with nitrogen. When in the presence of water tholins can facilitate the formation of prebiotic chemistry that may have been the origins of life.
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----- 707-536-3272 ---------------- Tuesday, February 20, 2018 -----
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