https://padlet.com/17026382/238jac6vuzfo en-us 2019-04-09 14:42:53 UTC 2024-05-22 22:51:18 UTC hello@padlet.com 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352810566 The origin of life is always debatable whether it was natural or of extraterrestrial origin (came with a meteorite.) The planet Earth formed 4,500,000,000 years ago and 1,000,000,000 years later, a primitive single celled organism emerged. These single-celled organisms took another 2,750,000,000 years to become the dinosaurs. The dinosaurs gone extinct 120,000,000 years later.]]> 2019-04-19 21:14:10 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352810566 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352862934  It took about another 7,000,000 years until the Modern Homo Sapiens showed up at about 130,000 years ago, still reasonably long. But, it looked like something special happened at about 10,000 years ago, Ancient Egyptians, Sumerians, Mesopotamians civilizations exploded into the world history with many magnificent landmarks which were only feasible by advanced knowledge of Astronomy, Mathematics, Engineering, Physics, Architecture, etc. That seems odd, it was so short time evolution development from stone age to the pyramids with some content speculated about extraterrestrials under the Sphinx.]]> 2019-04-20 15:51:30 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352862934 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352864233 Even more fascinating, only a short 10,000 years later, which is about now, human spacecraft landed on the moon, began to reach outer deep space, and the Hubble Space Telescope had been peering out into other galaxies searching for the origin of our universe and life. Therefore, SETI was created to find out as Enrico Fermi once said “Where is everybody?” ]]> 2019-04-20 16:12:37 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352864233 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352864320 We now know our universe are full of galaxies. Our Milky Way galaxy alone is so vast that there are estimated 11 billion exoplanets that orbit around their own Sun, and many may have conditions to support life. ]]> 2019-04-20 16:14:08 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352864320 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352865451 There are a spectrum of possibilities for life and its civilizations that SETI have classified, from very primitive – to advance – to as capable as God. The bottom and the top groups are not the main focus because either they cannot communicate yet, or they don’t care to communicate and ignoring us. ]]> 2019-04-20 16:34:10 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352865451 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352865889 This leaves the middle groups which are: (1) they are about at our level and would like to find and talk to us – so we are looking for them too, and (2) they know someone is here, and would like to talk to us – but we couldn’t know what they’ve sent.

]]> 2019-04-20 16:41:20 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352865889 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352868912 Because of the possibility of extraterrestrials and its different technologies, SETI was created in 1984 by NASA in Mountain View, California to explore, intercept, understand, and explain the origin and the nature of life and intelligence in the universe and have used many methods to search for extraterrestrials.]]> 2019-04-20 17:30:19 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352868912 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352869070 Sending radio wave signals from radio wave telescopes like the Allen Telescope Array (ATA) towards those exoplanets. If there is any intelligent life, the signal would be intercepted and a possibility of a response signal. ]]> 2019-04-20 17:33:18 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352869070 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352869711 Using the ATA to survey exoplanets for obvious signals of life like pollution or climate change over a period of times. ]]> 2019-04-20 17:44:53 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352869711 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352870131 Looking for suspicious kinds of incoming signals that the extraterrestrials may use to get our attention for contact. This could mean looking for laser flashes that are unlike the flashes by nature. This means looking for flashes around a nanosecond long.]]> 2019-04-20 17:53:20 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352870131 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352870244      In conclusion, since there is a very high probability that the origin of life on Earth is extraterrestrial and also there are billions of exoplanets in the universe that may harbor life. SETI is one of a kind group of people that dedicated to appropriately use our technology to search for the origin of life and civilization both on Earth and traterrestrial. Hopefully someday, they would successfully intercept or receive something that we are all looking for. That would be a great gift to mankind indeed.]]> 2019-04-20 17:56:00 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352870244 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352931356 Primate-like mammals roamed alongside the dinosaurs. The first true primates appeared 15,000,000 years after the dinosaurs. It took another 43,000,000 years for these apes to evolve into human ancestors. That seems to be quite reasonably long evolution time.]]> 2019-04-21 16:27:05 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352931356 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352933156 2019-04-21 16:59:43 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352933156 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/352933315 2019-04-21 17:01:41 UTC https://padlet.com/17026382/238jac6vuzfo/wish/352933315 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/353063206 2019-04-22 14:31:45 UTC https://padlet.com/17026382/238jac6vuzfo/wish/353063206 17026382 https://padlet.com/17026382/238jac6vuzfo/wish/353066654 2019-04-22 14:40:45 UTC https://padlet.com/17026382/238jac6vuzfo/wish/353066654