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


Topic: earth

NASA says researchers use Microgravity Environment aboard International Space Station to better understand Fungi

 

Written by Laura Niles
International Space Station Program Science Office and Public Affairs Office

NASA - National Aeronautics and Space AdministrationWashington, D.C. – You may not recognize it by name, but if you have ever had a child with a diaper rash, that child was likely a host to Candida albicans (C. albicans). This unwelcome “guest” can be hard to control, as it can potentially lead to serious illness in humans with weakened immune systems.

During an investigation dubbed “Microbe,” using the unique microgravity environment aboard space shuttle Atlantis on an International Space Station mission, researchers at the Arizona State University (ASU) in Tempe gained a better understanding of these prevalent fungi.

Group Activation Pack cylinders similar to these, pictured within the Commercial Generic Bioprocessing Apparatus, were used to study the fungal pathogen C. albicans aboard space shuttle Atlantis. (NASA)

Group Activation Pack cylinders similar to these, pictured within the Commercial Generic Bioprocessing Apparatus, were used to study the fungal pathogen C. albicans aboard space shuttle Atlantis. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA says Earth and Mars moving closer together, converging for an “Opposition of Mars” in April

 

Written by Dr. Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – By the time you finish reading this story, you’ll be about 1,000 km closer to the planet Mars.

Earth and Mars are converging for a close encounter. As March gives way to April, the distance between the two planets is shrinking by about 300 km every minute. When the convergence ends in mid-April, the gulf between Earth and Mars will have narrowed to only 92 million km–a small number on the vast scale of the solar system.

YouTube Preview Image «Read the rest of this article»

Sections: Technology | No Comments
 

NASA creates 3D Image of Los Angeles Earthquake Zone

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – On March 28th, residents of Greater Los Angeles experienced the largest earthquake to strike the region since 2008. The magnitude 5.1 quake was centered near La Habra in northwestern Orange County about 21 miles (33 kilometers) east-southeast of Los Angeles, and was widely felt throughout Southern California.

There have been hundreds of aftershocks, including one of magnitude 4.1.

JPL scientists modeled the March 28, 2014 magnitude 5.1 quake near Los Angeles based on USGS seismic data. This model image shows how the quake may appear to airborne radar, such as NASA's UAVSAR, which will survey the area soon. Blue shades indicate the greatest surface displacement. (NASA/JPL-Caltech/USGS/Google Earth)

JPL scientists modeled the March 28, 2014 magnitude 5.1 quake near Los Angeles based on USGS seismic data. This model image shows how the quake may appear to airborne radar, such as NASA’s UAVSAR, which will survey the area soon. Blue shades indicate the greatest surface displacement. (NASA/JPL-Caltech/USGS/Google Earth)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA reports United States to be treated to a series of Lunar Eclipses starting April 15th, 2014

 

Written by Dr. Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – For people in the United States, an extraordinary series of lunar eclipses is about to begin.

The action starts on April 15th when the full Moon passes through the amber shadow of Earth, producing a midnight eclipse visible across North America. So begins a lunar eclipse tetrad—a series of 4 consecutive total eclipses occurring at approximately six month intervals. The total eclipse of April 15th, 2014, will be followed by another on October 8th, 2014, and another on April 4th, 2015, and another on September 28th 2015.

YouTube Preview Image «Read the rest of this article»

Sections: Technology | No Comments
 

New Spacecraft being design by NASA may one day take images of Earth like Planets

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A spacecraft that looks like a giant sunflower might one day be used to acquire images of Earth-like rocky planets around nearby stars. The prototype deployable structure, called a starshade, is being developed by NASA’s Jet Propulsion Laboratory in Pasadena, CA.

The hunt is on for planets that resemble Earth in size, composition and temperature. Rocky planets with just the right temperature for liquid water — not too hot, not too cold — could be possible abodes for life outside our solar system.

YouTube Preview Image «Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s twin Van Allen Probes spacecraft discover stripe pattern in one radiation belt around Earth

 

Written by Geoff Brown / Karen C. Fox
APL / NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Scientists have discovered a new, persistent structure in one of two radiation belts surrounding Earth. NASA’s twin Van Allen Probes spacecraft have shown that high-energy electrons in the inner radiation belt display a persistent pattern that resembles slanted zebra stripes.

Surprisingly, this structure is produced by the slow rotation of Earth, previously considered incapable of affecting the motion of radiation belt particles, which have velocities approaching the speed of light.

Two giant belts of radiation surround Earth. The inner belt is dominated by electrons and the outer one by protons.  (NASA)

Two giant belts of radiation surround Earth. The inner belt is dominated by electrons and the outer one by protons.
(NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA study shows Amazon Forest consumes more Carbon Dioxide than it creates

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A new NASA-led study seven years in the making has confirmed that natural forests in the Amazon remove more carbon dioxide from the atmosphere than they emit, therefore reducing global warming. This finding resolves a long-standing debate about a key component of the overall carbon balance of the Amazon basin.

The Amazon’s carbon balance is a matter of life and death: living trees take carbon dioxide out of the air as they grow, and dead trees put the greenhouse gas back into the air as they decompose.

Old-growth Amazon tree canopy in Tapajós National Forest, Brazil. A new NASA study shows that the living trees in the undisturbed Amazon forest draw more carbon dioxide from the air than the forest's dead trees emit. (NASA/JPL-Caltech)

Old-growth Amazon tree canopy in Tapajós National Forest, Brazil. A new NASA study shows that the living trees in the undisturbed Amazon forest draw more carbon dioxide from the air than the forest’s dead trees emit. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA Detector Technology discovers evidence of Gravitational Waves created by the Big Bang

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers are announcing today that they have acquired the first direct evidence that gravitational waves rippled through our infant universe during an explosive period of growth called inflation.

This is the strongest confirmation yet of cosmic inflation theories, which say the universe expanded by 100 trillion trillion times, in less than the blink of an eye.

The findings were made with the help of NASA-developed detector technology on the BICEP2 telescope at the South Pole, in collaboration with the National Science Foundation.

The BICEP2 telescope at the South Pole used a specialized array of superconducting detectors to capture polarized light from billions of years ago. (NASA/JPL-Caltech)

The BICEP2 telescope at the South Pole used a specialized array of superconducting detectors to capture polarized light from billions of years ago. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Global Hawk research aircraft finishes Climate Change study

 

Written by Rachel Hoover
NASA Ames Research Center

NASA - National Aeronautics and Space AdministrationMountain View, CA – NASA’s Global Hawk research aircraft returned to its base at NASA’s Armstrong Flight Research Center at Edwards Air Force Base, CA, early Friday morning March 14th, marking the completion of flights in support of this year’s Airborne Tropical Tropopause Experiment (ATTREX), a multi-year NASA airborne science campaign.

On February 13th, the autonomously operated aircraft began conducting science flights from Andersen Air Force Base on Guam in the western Pacific region on a mission to track changes in the upper atmosphere and help researchers understand how these changes affect Earth’s climate.

NASA's Global Hawk No. 872 flares for landing at Andersen Air Force Base on Guam to begin the 2014 ATTREX climate-change mission Jan. 17th. The two-month-long airborne science flight campaign wrapped up with the aircraft's return to NASA's Armstrong Flight Research Center March 14th. (U.S. Air Force)

NASA’s Global Hawk No. 872 flares for landing at Andersen Air Force Base on Guam to begin the 2014 ATTREX climate-change mission Jan. 17th. The two-month-long airborne science flight campaign wrapped up with the aircraft’s return to NASA’s Armstrong Flight Research Center March 14th. (U.S. Air Force)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA reports Orion Spacecraft construction, testing ahead of schedule

 

NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Orion is marching ever closer to its first trip to space on a flight that will set the stage for human exploration of new destinations in the solar system.

The Orion team continues to work toward completing the spacecraft to be ready for a launch in September-October.  However, the initial timeframe for the launch of Exploration Flight Test-1 (EFT-1) has shifted from September-October to early December to support allowing more opportunities for launches this year.

Engineers prepare Orion’s service module for installation of the fairings that will protect it during launch this fall when Orion launches on its first mission. The service module, along with its fairings, is now complete. (NASA)

Engineers prepare Orion’s service module for installation of the fairings that will protect it during launch this fall when Orion launches on its first mission. The service module, along with its fairings, is now complete. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 


Page 2 of 5612345...»

Personal Controls

Archives