"Early Earth: The RNA and DNA Worlds Evolved Simultaneously" --New Theory of the Origin of Life

 

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A new study led by scientists at The Scripps Research Institute (TSRI) offers a twist on a popular theory for how life on Earth began about four billion years ago, challenging the "RNA world" hypothesis, a theory for how RNA molecules evolved to create proteins and DNA. Instead, the new research offers evidence for a world where RNA and DNA evolved simultaneously.

 

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New Discovery --"Challenges Hidden Diversity of the Universe"

 

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Astronomers have discovered a 'hot molecular core', a cocoon of molecules surrounding a newborn massive star, for the first time outside our Galaxy. The discovery, which marks the first important step for observational studies of extragalactic hot molecular cores and challenges the hidden chemical diversity of our universe.

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StarTalk Radio with Neil deGrasse Tyson --"Inside NASA's Mission Control"

 

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 Astro Mike Massimino takes us inside Johnson Space Center, with a little help from his friends and guests, NASA Flight Directors Emily Nelson and Royce Renfrew, and his co-host Maeve Higgins. Discover just what it takes to keep expedition crews and vehicles safe during operations, from the mundane aspects of creating daily schedules that keep astronauts as productive – and happy – as possible, to the emergency procedures that can prevent disaster, as they did when water in astronaut Tim Kopra’s helmet led mission control to terminate an EVA.

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NASA Discovery Video --"Hubble Space Telescope's Evidence of Water Plumes on Europa" (VIEW)



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NASA's Hubble Space Telescope took direct ultraviolet images of the icy moon Europa transiting across the disk of Jupiter. Out of ten observations, Hubble saw what may be water vapor plumes on three of the images. This adds another piece of supporting evidence to the existence of water vapor plumes on Europa - Hubble also detected spectroscopic signatures of water vapor in 2012. The existence of water vapor plumes could provide a future Europa flyby mission the opportunity to study the conditions and habitability of Europa's subsurface ocean

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"Killer Electrons" Threaten Earth's Space Satellites

 

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In recent years, there has been much scientific interest in understanding the Van Allen belts. New technologies now require that telecommunication satellites spend a great deal of time in those belts and that GPS satellites operate in the heart of the belts. With the increasingly smaller size of space electronics has come greater vulnerability of satellites to space radiation, according to Yuri Shprits, a research geophysicist with Earth, Planetary and Space Sciences in the UCLA College and a member of the international team.

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China to Build a 'Smart Ocean' --"The Next Great Maritime Power"

 

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China, on its way of implementing the strategy of building a maritime power, is endeavoring to promoting the development of maritime big data and building of "Smart Ocean," using satellite sensing, intelligent buoy, underwater glider, underwater robot, and deep-sea space station.

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SpaceX Founder Unveils Plans for an Extraterrestrial Colony on Mars --"Making Humans a Multiplanetary Species"

 

 

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SpaceX and Tesla founder Elon Musk will outline a plan on Today at the International Astronautical Congress in Mexico for building an extraterrestrial settlement on the Mars and make "humans a multiplanetary species."  Musk views Mars as a "backup drive" for humanity.

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NASA: Europa's Water Plumes Detected --"Missions May Be Able to Probe Its Ocean Without Drilling Through Miles of Ice"

 

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Astronomers using NASA's Hubble Space Telescope have imaged what may be water vapor plumes erupting off the surface of Jupiter's moon Europa. This finding bolsters other Hubble observations suggesting the icy moon erupts with high-altitude water vapor plumes. The observation increases the possibility that missions to Europa may be able to sample Europa's ocean without having to drill through miles of ice.

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Today's NASA TV Press-Conference Primer --"The Vanishing 200-Kilometer-High Geysers of Jupiter's Ocean Moon, Europa"

 

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“Water is generally considered a basic prerequisite for life – at least as we know it on earth,” said Lorenz Roth, who was in charge of analysing the 2013 Hubble observations and who has been working at the Southwest Research Institute in America. “For this reason, the discovery of a water vapor plumes on the moon Europa has increasingly become a focus of extraterrestrial research.”

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