[Spacetalk] https://www.nasa.gov/index.html

Gabe Gabrielle gabe at educatemotivate.com
Thu Nov 19 20:52:15 CST 2015


Hi all,
 It has been a crazy week for sure, with the school presentations plus all the driving leading to 12 hour days ...I had to get up at 4:30 to drive to the Tampa area to participate at Teach-Ins at 3 schools…Nobles Elementary, Gibsonton Elementary, and West Shore Elementary….traffic was terrible and I had roughly an hour between each school from the time I stopped at one and stared at another with about almost an hour travel time, considering getting from the presentation area to the next school to sign in and get to the presentation area…I think the kids still enjoyed it as they were all smiling and full of questions…I woke up feeling very sick, sore throat, headache, upset stomach, sore all over and very tired….not like me at all…but I somehow got through it, not a single break for lunch or any other nutrition…now I am really feeling very sick and have to get ready to leave for Norway & Denmark on Saturday…I’ve been looking so forward to this but not sure how I will be able to give the kids what they deserve…and it will be so cold there too. Much advice to hydrate and vitamin C but still feel terrible…may try a walk in clinic tomorrow, if not any better…I will still try to send the newsletter while away but probably only one a week as I have a really full schedule….we must always remember to do our best, enjoy everything we do, live in the present, make each day special, let those we care about most know, be thankful for the good in our lives, smile and have fun….gabe

Nov. 19, 1969, Apollo 12 Lunar Module Intrepid
 <http://www.nasa.gov/sites/default/files/thumbnails/image/as12-51-7507.jpg>
The Apollo 12 <https://www.nasa.gov/mission_pages/apollo/missions/apollo12.html> Lunar Module (LM), in a lunar landing configuration, is photographed in lunar orbit from the Command and Service Modules (CSM) on Nov. 19, 1969. The coordinates of the center of the lunar surface shown in picture are 4.5 degrees west longitude and 7 degrees south latitude. The largest crater in the foreground is Ptolemaeus; and the second largest is Herschel. Aboard the LM were astronauts Charles Conrad Jr., commander; and Alan L. Bean, lunar module pilot. Astronaut Richard R. Gordon Jr., command module pilot, remained with the CSM in lunar orbit while Conrad and Bean descended in the LM to explore the surface of the moon.


A Brighter Moon
 <http://www.nasa.gov/sites/default/files/thumbnails/image/pia18345-1041.jpg>
Although Dione (near) and Enceladus (far) are composed of nearly the same materials, Enceladus has a considerably higher reflectivity than Dione. As a result, it appears brighter against the dark night sky.The surface of Enceladus (313 miles or 504 kilometers across) endures a constant rain of ice grains from its south polar jets. As a result, its surface is more like fresh, bright, snow than Dione's (698 miles or 1123 kilometers across) older, weathered surface. As clean, fresh surfaces are left exposed in space, they slowly gather dust and radiation damage and darken in a process known as "space weathering."This view looks toward the leading hemisphere of Enceladus. North on Enceladus is up and rotated 1 degree to the right. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 8, 2015.The view was acquired at a distance of approximately 52,000 miles (83,000 kilometers) from Dione. Image scale is 1,600 feet (500 meters) per pixel. The distance from Enceladus was 228,000 miles (364,000 kilometers) for an image scale of 1.4 miles (2.2 kilometers) per pixel.The Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colorado. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov <http://saturn.jpl.nasa.gov/> or http://www.nasa.gov/cassini <http://www.nasa.gov/cassini> . The Cassini imaging team homepage is at http://ciclops.org <http://ciclops.org/> .

  <https://www.nasa.gov/sites/default/files/stereo720_2.jpg>
Nov. 19, 2015
Share on facebook <https://www.nasa.gov/feature/goddard/nasa-s-stereo-a-resumes-normal-operations/#>Share on twitter <https://www.nasa.gov/feature/goddard/nasa-s-stereo-a-resumes-normal-operations/#>Share on google_plusone_share <https://www.nasa.gov/feature/goddard/nasa-s-stereo-a-resumes-normal-operations/#>Share on pinterest_share <https://www.nasa.gov/feature/goddard/nasa-s-stereo-a-resumes-normal-operations/#>More Sharing Services <https://www.nasa.gov/feature/goddard/nasa-s-stereo-a-resumes-normal-operations/#>
NASA’s STEREO-A Resumes Normal Operations 
 <https://www.nasa.gov/sites/default/files/thumbnails/image/20151117_100030_n4eua_195.jpg>
An image of the sun taken with the Extreme Ultraviolet Imager aboard STEREO-A, which collects images in several wavelengths of light that are invisible to the human eye. This image shows the sun in wavelengths of 195 angstroms, which are typically colorized in green.
Credits: NASA/STEREO
On Nov. 9, 2015, NASA’s Solar and Terrestrial Relations Observatory Ahead, or STEREO-A, once again began transmitting data at its full rate. For the previous year, STEREO-A was transmitting only a weak signal—or occasionally none at all—due to its position almost directly behind the sun. Subsequently, as of Nov. 17, STEREO resumed its normal science operations, which includes transmission of lower-resolution real-time data—used by scientists to monitor solar events—as well as high-definition, but delayed, images of the sun’s surface and atmosphere.

One of the key components of the real-time data, known as beacon data, is what's called coronagraph imagery – in which the bright light of the sun is blocked out in order to better see the sun's faint atmosphere. Coronagraphs are key for monitoring when the sun erupts with a coronal mass ejection, which can send a giant cloud of solar material out into space. Such space weather can lead to interference with radio communications, GPS signals and satellites.
“STEREO-A’s real-time data is key for scientists to make accurate models of interplanetary space weather,” said Yari Collado-Vega, a space scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “Having a second set of coronagraph images, in addition to those from the Solar and Heliospheric Observatory (SOHO), means we can measure coronal mass ejections much more accurately.”
For the past year, however, beacon data was only received for a few hours each day—if at all—limiting scientists’ ability to monitor the sun. Since August 2014, our line of communication to the spacecraft was so close to the sun that pointing the antenna straight at Earth also meant pointing it nearly directly at the sun, which would cause the spacecraft’s antenna to dangerously overheat. Now that STEREO-A has emerged from behind the sun, scientists have once again pointed the main lobe of STEREO-A’s antenna towards Earth and the stronger signal means that the majority of the beacon data can once again be picked up.
STEREO-A is also using this stronger signal to send high-definition views of the sun’s far side with a two- to three-day delay. These detailed images of the sun’s surface and atmosphere allow scientists to better track the formation of solar events.   
“We’re now using STEREO-A to its fullest capabilities, given how far away it is,” said Terry Kucera, deputy project scientist for the STEREO mission at Goddard.
STEREO-A’s twin spacecraft, STEREO Behind, has been out of communication since October 2014, when communications were lost following a planned reset of the spacecraft. For several months, STEREO-B’s orbit took it behind the sun from our perspective, making it impossible to send messages to the spacecraft. But STEREO-B will soon emerge from the sun’s interference zone, and spacecraft operators will resume their attempts to contact the spacecraft on Nov. 30.

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://educatemotivate.com/pipermail/spacetalk_educatemotivate.com/attachments/20151119/e245afb5/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: as12-51-7507.jpg
Type: image/jpeg
Size: 77519 bytes
Desc: not available
URL: <http://educatemotivate.com/pipermail/spacetalk_educatemotivate.com/attachments/20151119/e245afb5/attachment-0002.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: pia18345-1041.jpeg
Type: image/jpeg
Size: 25603 bytes
Desc: not available
URL: <http://educatemotivate.com/pipermail/spacetalk_educatemotivate.com/attachments/20151119/e245afb5/attachment-0002.jpeg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: stereo720_2.jpeg
Type: image/jpeg
Size: 33803 bytes
Desc: not available
URL: <http://educatemotivate.com/pipermail/spacetalk_educatemotivate.com/attachments/20151119/e245afb5/attachment-0003.jpeg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20151117_100030_n4eua_195.jpg
Type: image/jpeg
Size: 10688 bytes
Desc: not available
URL: <http://educatemotivate.com/pipermail/spacetalk_educatemotivate.com/attachments/20151119/e245afb5/attachment-0003.jpg>


More information about the Spacetalk mailing list