Clarksville, TN Online: News, Opinion, Arts & Entertainment.


Topic: NASA’s Astrobiology Institute

NASA says researchers have used Seafloor chimneys to turn on a Light Bulb

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – One of the key necessities for life on our planet is electricity. That’s not to say that life requires a plug and socket, but everything from shrubs to ants to people harnesses energy via the transfer of electrons — the basis of electricity.

Some experts think that the very first cell-like organisms on Earth channeled electricity from the seafloor using bubbling, chimney-shaped structures, also known as chemical gardens.

Researchers created "chemical gardens" -- chimney-like structures normally found at bubbling vents on the seafloor -- in the laboratory. (NASA/JPL-Caltech)

Researchers created “chemical gardens” — chimney-like structures normally found at bubbling vents on the seafloor — in the laboratory. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA research shows Jupiter’s moon Ganymede may have layers of ice and oceans

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The largest moon in our solar system, a companion to Jupiter named Ganymede, might have ice and oceans stacked up in several layers like a club sandwich, according to new NASA-funded research that models the moon’s makeup.

Previously, the moon was thought to harbor a thick ocean sandwiched between just two layers of ice, one on top and one on bottom.

This artist's concept of Jupiter's moon Ganymede, the largest moon in the solar system, illustrates the "club sandwich" model of its interior oceans. (NASA/JPL-Caltech)

This artist’s concept of Jupiter’s moon Ganymede, the largest moon in the solar system, illustrates the “club sandwich” model of its interior oceans. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA research study shows how Electrical Energy on the Sea Floor may have spawned Life on Earth

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Life took root more than four billion years ago on our nascent Earth, a wetter and harsher place than now, bathed in sizzling ultraviolet rays. What started out as simple cells ultimately transformed into slime molds, frogs, elephants, humans and the rest of our planet’s living kingdoms. How did it all begin?

A new study from researchers at NASA’s Jet Propulsion Laboratory in Pasadena, CA, and the Icy Worlds team at NASA’s Astrobiology Institute, based at NASA’s Ames Research Center in Moffett Field, CA, describes how electrical energy naturally produced at the sea floor might have given rise to life.

Michael Russell and Laurie Barge of NASA's Jet Propulsion Laboratory, Pasadena, CA, are pictured in their Icy Worlds laboratory, where they mimic the conditions of Earth billions of years ago, attempting to answer the question of how life first arose. (NASA/JPL-Caltech)

Michael Russell and Laurie Barge of NASA’s Jet Propulsion Laboratory, Pasadena, CA, are pictured in their Icy Worlds laboratory, where they mimic the conditions of Earth billions of years ago, attempting to answer the question of how life first arose. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA Scientist tries to answer the question, “How did Life get it’s start on Earth?”

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – How did life on Earth get started? Three new papers co-authored by Mike Russell, a research scientist at NASA’s Jet Propulsion Laboratory, Pasadena, CA, strengthen the case that Earth’s first life began at alkaline hydrothermal vents at the bottom of oceans.

Scientists are interested in understanding early life on Earth because if we ever hope to find life on other worlds — especially icy worlds with subsurface oceans such as Jupiter’s moon Europa and Saturn’s Enceladus — we need to know what chemical signatures to look for.

This image from the floor of the Atlantic Ocean shows a collection of limestone towers known as the "Lost City." Alkaline hydrothermal vents of this type are suggested to be the birthplace of the first living organisms on the ancient Earth.  (Image courtesy D. Kelley and M. Elend/University of Washington)

This image from the floor of the Atlantic Ocean shows a collection of limestone towers known as the “Lost City.” Alkaline hydrothermal vents of this type are suggested to be the birthplace of the first living organisms on the ancient Earth. (Image courtesy D. Kelley and M. Elend/University of Washington)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Jet Propulsion Laboratory studies atmospheric chemistry of Saturn’s moon Titan

 

Written by Jia-Rui C. Cook
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A laboratory experiment at NASA’s Jet Propulsion Laboratory, Pasadena, CA, simulating the atmosphere of Saturn’s moon Titan suggests complex organic chemistry that could eventually lead to the building blocks of life extends lower in the atmosphere than previously thought.

The results now point out another region on the moon that could brew up prebiotic materials. The paper was published in Nature Communications this week.

The colorful globe of Saturn's largest moon, Titan, passes in front of the planet and its rings in this true color snapshot from NASA's Cassini spacecraft. (Image credit: NASA/JPL-Caltech/Space Science Institute)

The colorful globe of Saturn’s largest moon, Titan, passes in front of the planet and its rings in this true color snapshot from NASA’s Cassini spacecraft. (Image credit: NASA/JPL-Caltech/Space Science Institute)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Kepler Space Telescope data shows possibility of Earth Size planet just 13 light years from Earth

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Using publicly available data from NASA’s Kepler space telescope, astronomers at the Harvard-Smithsonian Center for Astrophysics estimate that six percent of red dwarf stars in the galaxy have Earth-size planets in the “habitable zone,” the range of distances from a star where the surface temperature of an orbiting planet might be suitable for liquid water.

The majority of the sun’s closest stellar neighbors are red dwarfs. Researchers now believe that an Earth-size planet with a moderate temperature may be just 13 light-years away.

Astronomers estimate that six percent of red dwarfs have a temperate Earth-size planet, as close as 13 light-years away. (Image credit: D. Aguilar/Harvard-Smithsonian Center for Astrophysics)

Astronomers estimate that six percent of red dwarfs have a temperate Earth-size planet, as close as 13 light-years away. (Image credit: D. Aguilar/Harvard-Smithsonian Center for Astrophysics)

«Read the rest of this article»

Sections: Technology | No Comments
 



  • Visit Us On FacebookVisit Us On TwitterVisit Us On PinterestVisit Us On YoutubeCheck Our FeedVisit Us On Instagram
  • Personal Controls

    Archives