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


Topic: Sun

NASA to chase Total Solar Eclipse from WB-57F Jets

 

Written by Mara Johnson-Groh
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – For most viewers, the Monday, August 21st, 2017, total solar eclipse will last less than two and half minutes. But for one team of NASA-funded scientists, the eclipse will last over seven minutes. Their secret? Following the shadow of the Moon in two retrofitted WB-57F jet planes.

Amir Caspi of the Southwest Research Institute in Boulder, Colorado, and his team will use two of NASA’s WB-57F research jets to chase the darkness across America on August 21st. Taking observations from twin telescopes mounted on the noses of the planes, Caspi will ­­­­­capture the clearest images of the Sun’s outer atmosphere — the corona — to date and the first-ever thermal images of Mercury, revealing how temperature varies across the planet’s surface.

(Photo illustration) During the upcoming total solar eclipse, a team of NASA-funded scientists will observe the solar corona using stabilized telescopes aboard two of NASA’s WB-57F research aircraft. This vantage point provides distinct advantages over ground-based observations, as illustrated by this composite photo of the aircraft and the 2015 total solar eclipse at the Faroe Islands. (NASA/Faroe Islands/SwRI)

(Photo illustration) During the upcoming total solar eclipse, a team of NASA-funded scientists will observe the solar corona using stabilized telescopes aboard two of NASA’s WB-57F research aircraft. This vantage point provides distinct advantages over ground-based observations, as illustrated by this composite photo of the aircraft and the 2015 total solar eclipse at the Faroe Islands. (NASA/Faroe Islands/SwRI)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA explains the difference between Greatest Eclipse and Greatest Duration

 

Written by Lina Tran
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – During the total solar eclipse on Monday, August 21st, 2017, the Moon’s shadow will cross the United States from Oregon to South Carolina in just an hour and a half. But the shadow won’t travel across the country at the same speed. Instead, its speed will vary — and depending on location, so too will the duration of totality, the fleeting minutes when the Moon completely covers the Sun.

Two points along the shadow’s path are of particular interest to eclipse viewers seeking the longest-lasting totality: the point of greatest eclipse and the point of greatest duration.

The point of greatest eclipse for the August 21st total solar eclipse will see 2 minutes, 40.1 seconds of totality. The closest towns to this location are Cerulean and Hopkinsville, Kentucky, which each will experience 2 minutes, 40 seconds of totality. (Map data by Google; eclipse calculations by NASA)

The point of greatest eclipse for the August 21st total solar eclipse will see 2 minutes, 40.1 seconds of totality. The closest towns to this location are Cerulean and Hopkinsville, Kentucky, which each will experience 2 minutes, 40 seconds of totality. (Map data by Google; eclipse calculations by NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 

TDH and TDOS Encourage Safe Viewing During the Total Solar Eclipse

 

Tennessee Department of HealthNashville, TN – A total solar eclipse, when the moon completely covers the sun, will be visible Monday, August 21st, 2017. Tennessee is one of 14 states that will be in the path of totality, a 70 mile-wide path where the sun is completely blocked by the moon.

The Tennessee Department of Health encourages everyone to enjoy this once in a lifetime event, but urges eye protection and common sense safety.

Total Solar Eclipse

Total Solar Eclipse

«Read the rest of this article»

Sections: News | No Comments
 


NASA’s Lunar Reconnaissance Orbiter team invites public to wave at the Moon during Total Solar Eclipse

 

Written by Nancy Neal Jones
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s Lunar Reconnaissance Orbiter (LRO) team invites the public to wave at the Moon on Monday, August 21st, 2017 as LRO turns its camera toward Earth.

The LRO Camera, which has captured gorgeous views of the lunar landscape and documented geologic activity still occurring today, will turn toward Earth during the total solar eclipse on August 21st at approximately 2:25pm EDT (11:25am PDT) to capture an image of the Moon’s shadow on Earth.

NASA's Lunar Reconnaissance Orbiter has observed solar eclipses from its vantage point at the moon before. The image LRO takes of Earth on Aug. 21, 2017, is expected to look similar to this view, which the satellite captured in May 2012. Australia is visible at the bottom left of this image, and the shadow cast on Earth's surface by the moon is the dark area just to the right of top-center. (NASA/Goddard Space Flight Center/Arizona State University)

NASA’s Lunar Reconnaissance Orbiter has observed solar eclipses from its vantage point at the moon before. The image LRO takes of Earth on Aug. 21, 2017, is expected to look similar to this view, which the satellite captured in May 2012. Australia is visible at the bottom left of this image, and the shadow cast on Earth’s surface by the moon is the dark area just to the right of top-center. (NASA/Goddard Space Flight Center/Arizona State University)

«Read the rest of this article»

Sections: Technology | No Comments
 

City of Clarksville closes offices Monday for Total Solar Eclipse

 

Updated estimates of crowds, activity prompts change

City of Clarksville - Clarksville, TNClarksville, TN – City of Clarksville offices will close Monday, August 21st, 2017 for the Great American Eclipse, Clarksville Mayor Kim McMillan has announced.

“The latest estimates indicate the eclipse is expected to bring up to 200,000 visitors to our area for a large number of planned events,” Mayor McMillan said. “We now think it would be prudent to close our business offices and keep employees and potential customers off the roads during this time of traffic congestion.”

Clarksville City Hall

Clarksville City Hall

«Read the rest of this article»

Sections: News | No Comments
 

Blanchfield Army Community Hospital alerts patients to Total Solar Eclipse Safety

 

Written by Daniel Ashley
Regional Health Command-Atlantic

U.S. Department of the ArmyFort Campbell, KY – Fort Campbell, Kentucky and the surrounding communities will be at the center of the first coast-to-coast, total, solar eclipse since 1918 next Monday, August 21st, 2017.

Blanchfield Army Community Hospital has been doing its part in alerting its patients on how best to watch and keep their eyes safe. Remember, it is never safe to look directly at the sun’s rays – even if the sun is partly obscured.

When watching the total eclipse, all should wear eclipse glasses at all times when facing the sun, or use an alternate indirect method up until the time when the sun is completely and totally blocked.

Sections: Business | No Comments
 

NASA tells you What to Expect When Viewing the Total Solar Eclipse

 

Written by Andrew Good
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – What does a partial eclipse look like, anyway?

A new web-based tool from NASA lets anyone preview the event from any location, making it easy to see the difference between the total eclipse traversing a narrow band of the country on August 21st, 2017,  and the partial event most Americans will experience.

The Eyes on the Eclipse application allows users to simulate a view of the eclipse from any point on the planet, and can be used with any web browser:

https://eyes.jpl.nasa.gov/eyes-on-eclipse.html

This illustration depicts a rare alignment of the Sun and Moon casting a shadow on Earth. (NASA)

This illustration depicts a rare alignment of the Sun and Moon casting a shadow on Earth. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA explains What Happens During a Total Solar Eclipse

 

Written by Andrew Good
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – It might be the hottest event of the summer: On Monday, the U.S. will see the first solar eclipse visible across both coasts in nearly a century.

The path of totality — where the view of the Sun will be totally blocked by the Moon’s shadow — will cross from Oregon to South Carolina. The event has turned small towns like Twin Falls, Idaho, and Madras, Oregon, into prime vacation destinations. NASA is hosting events in a number of these locations, as well as encouraging teachers to share science with their students.

Jim Lux, a telecommunications specialist at NASA’s Jet Propulsion Laboratory in Pasadena, California, has traveled far and wide to view total eclipses in the past.

Below, he describes what makes them unique experiences.

A total solar eclipse gives scientists a rare opportunity to study the lower regions of the Sun's corona. These observations can help us understand solar activity, as well as the unexpectedly high temperatures in the corona. (S. Habbal, M. Druckmüller and P. Aniol)

A total solar eclipse gives scientists a rare opportunity to study the lower regions of the Sun’s corona. These observations can help us understand solar activity, as well as the unexpectedly high temperatures in the corona. (S. Habbal, M. Druckmüller and P. Aniol)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA along with European Space Agency observe how Solar Storms move through Space

 

Written by Sarah Frazier
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Our Sun is active: Not only does it release a constant stream of material, called the solar wind, but it also lets out occasional bursts of faster-moving material, known as coronal mass ejections, or CMEs.

NASA researchers wish to improve our understanding of CMEs and how they move through space because they can interact with the magnetic field around Earth, affecting satellites, interfering with GPS signals, triggering auroras, and — in extreme cases — straining power grids.

While we track CMEs with a number of instruments, the sheer size of the solar system means that our observations are limited, and usually taken from a distance.

ESA and NASA’s Solar and Heliospheric Observatory observed a coronal mass ejection erupting from the Sun on Oct. 14, 2014. Scientists went on to track this coronal mass ejection through the solar system using 10 NASA and ESA spacecraft. (The bright light appearing at roughly 2 o'clock is the planet Mercury.) (ESA/NASA/SOHO)

ESA and NASA’s Solar and Heliospheric Observatory observed a coronal mass ejection erupting from the Sun on Oct. 14, 2014. Scientists went on to track this coronal mass ejection through the solar system using 10 NASA and ESA spacecraft. (The bright light appearing at roughly 2 o’clock is the planet Mercury.) (ESA/NASA/SOHO)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA to study Earth’s Ionosphere during Total Solar Eclipse

 

Written by Lina Tran
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – On August 21st, 2017, the Moon will slide in front of the Sun and for a brief moment, day will melt into a dusky night. Moving across the country, the Moon’s shadow will block the Sun’s light, and weather permitting, those within the path of totality will be treated to a view of the Sun’s outer atmosphere, called the corona.

But the total solar eclipse will also have imperceptible effects, such as the sudden loss of extreme ultraviolet radiation from the Sun, which generates the ionized layer of Earth’s atmosphere, called the ionosphere. This ever-changing region grows and shrinks based on solar conditions, and is the focus of several NASA-funded science teams that will use the eclipse as a ready-made experiment, courtesy of nature.

The Moon’s shadow will dramatically affect insolation — the amount of sunlight reaching the ground — during the total solar eclipse. (NASA's Scientific Visualization Studio)

The Moon’s shadow will dramatically affect insolation — the amount of sunlight reaching the ground — during the total solar eclipse. (NASA’s Scientific Visualization Studio)

«Read the rest of this article»

Sections: Technology | No Comments
 


Page 1 of 4112345...»

  • Visit Us On FacebookVisit Us On TwitterVisit Us On GooglePlusVisit Us On PinterestVisit Us On YoutubeCheck Our Feed
  • Personal Controls

    Archives