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نجوم و هوافضا
سلام به همه ی دوستان عزیز عذر میخوام از اینکه مجبور شدم به زبون بیگانه مطلب بذارم .

از همه ی شما تقاضا دارم که نظرات خودتونو در مورد این وبلاگ اعلام کنید نقاط ضعف و قوط اون رو هم بگین.

توی یه وبلاگ دیگه دیدم که نویسنده از مخاطباش خواسته بود که در مورد شخصیتش حدس بزنن .

حالا اگه شما هم حوصلتون گذاشت ۴ خط بنویسین البته نه در مورد خودتون بلکه در مورد من (که نمیشناسین) ضمنا اگه فردی بتونه مشخصات من رو کامل بگه ....

شاید یه هدیه ناقابل پیش ما داره .

آسمان دلتون بدون ابر همیشه شاد و سربلند باشید.

انشاءا..و

+ نوشته شده در  Mon 5 Mar 2007ساعت 5 PM  توسط A^2  | 

New Horizons image of Io volcano



This dramatic image of Io was taken by the Long Range Reconnaissance Imager (LORRI) on New Horizons at 11:04 Universal Time on February 28, 2007, just about 5 hours after the spacecraft's closest approach to Jupiter. This processed image provides the best view yet of the enormous 290-kilometer (180-mile) high plume from the volcano Tvashtar, in the 11 o'clock direction near Io's north pole.

This is the last of a handful of LORRI images that New Horizons is sending "home" during its busy close encounter with Jupiter - hundreds of images and other data are being taken and stored onboard. The rest of the images will be returned to Earth over the coming weeks and months as the spacecraft speeds along to Pluto. + Read more

+ Additional mission photos will be posted at this link as they become available

+ New Horizons video page (approaching Jupiter)



Mission Milestones

February 2007 Jupiter gravity assist
March 2007 - June 2015 Interplanetary cruise
July 2015 Pluto-Charon encounter
2016-2020 Kuiper Belt objects encounter



Where is the New Horizons Spacecraft Now?
+ Find Out More

+ نوشته شده در  Mon 5 Mar 2007ساعت 5 PM  توسط A^2  | 

Space Shuttle Atlantis rolls back to the Vehicle Assembly Building.
Image above: Space Shuttle Atlantis rolls back to the Vehicle Assembly Building. Photo credit: NASA/KSC
+ View Hail Damage to External Tank

03.04.07 – 10:45 a.m. EST
Space Shuttle Atlantis began its roll back to the Vehicle Assembly Building this morning at 8:47 a.m. from Launch Pad 39A. The vehicle is being roll backed due to hail damage that occurred on the tank during a severe thunderstorm that happened on Feb. 26.

The trip back takes approximately 7 hours and should be hard down inside the Vehicle Assembly Building around 4 p.m.

The hail caused approximately 1,000 to 2,000 divots in the giant tank's foam insulation and minor surface damage to about 26 heat shield tiles on the orbiter's left wing.

Further inspection of the tank is necessary to get an accurate appraisal of foam damage and must be done in the Vehicle Assembly Building, where the entire tank can be more easily accessed.

Once an up-close look at the damage is complete, the type of repair required and the time needed for that work can be determined.

Mission STS-117 to the International Space Station will be scheduled sometime after a Russian Soyuz spacecraft returns from the station. The Soyuz is delivering new station crew members and returning others to Earth in late April. Adequate time is needed between the Soyuz undocking and the shuttle's arrival to the station.

During the 11-day mission, the six-member crew will install a new truss segment, retract a set of solar arrays and unfold a new set on the starboard side of the station. Lessons learned from two previous missions will provide the astronauts with new techniques and tools to perform their duties.

STS-117 Commander Rick Sturckow, Pilot Lee Archambault and Mission Specialists Jim Reilly, Patrick Forrester, Steven Swanson and John "Danny" Olivas will continue training at NASA's Johnson Space Center in Houston as they await a new target launch date.

The Atlantis flight crew will return to Kennedy Space Center a few days before launch.

STS-117 Mission
+ The Crew
+ The Mission
+ The Integrated Truss Structure

Media Resources
+ STS-117 Press Kit (5.9 Mb PDF)

Podcasts
+ View All Podcasts
+ How to Subscribe
+ نوشته شده در  Mon 5 Mar 2007ساعت 5 PM  توسط A^2  | 
That’s right! The Moon is the central figure in two different kinds of eclipses within one week. Here’s how. A total lunar eclipse, partly visible from every continent around the world, will occur on March 3 when the Moon will pass into and out of the shadow of Earth. The Moon will appear to glow with a distinct reddish cast. The entire event will be visible from Europe, Africa and western Asia. In eastern Asia, Moonset occurs during various stages of the eclipse. For example, the Moon sets while in total eclipse from central China and southeast Asia. Western Australia catches part of the initial partial phases but the Moon sets before totality. Observers in eastern North and South America will find the Moon already partially or totality eclipsed at Moonrise. From western North America, only the final phases are visible.

Total Lunar Eclipse
Image above: Total Lunar Eclipse: 2004. Credit: Fred Espenak.


Here in the United States, you have to be in the eastern half of the country to see the total eclipse. At the end of the day on Saturday, go outside and face east. As the sun sets in the western skies, a red Moon will rise before your eyes--fantastic! Maximum eclipse is at 6:21 p.m. EST. The next total lunar eclipse will occur on August 28 this summer. Lunar Eclipse

Video right: STEREO spacecraft captures a lunar transit of the sun. Click on image to view video. Credit: NASA.

+ STEREO high resolution images

On Feb. 25, 2007 there was another kind of eclipse of the Moon when it crossed the face of the Sun - but it could not be seen from Earth. This sight was visible only from the STEREO-B spacecraft in its orbit about the sun, trailing behind the Earth. NASA's STEREO mission consists of two spacecraft launched in October, 2006 to study solar storms. The transit started at 1:56 am EST and continued for 12 hours until 1:57 pm EST. STEREO-B is currently about one million miles from the Earth, 4.4 times farther away from the Moon than we are on Earth. As a result, the Moon will appear 4.4 times smaller than what we are used to. This is still, however, much larger than, say, the planet Venus appeared when in transited the Sun as seen from Earth in 2004. This alignment of STEREO-B and the Moon was not just due to luck. It was arranged with a small tweak to STEREO-B's orbit last December. The transit is quite useful to STEREO scientists for measuring the focus and the amount of scattered light in the STEREO imagers and for determining the pointing of the STEREO coronagraphs. The Sun as it appears in these the images and each frame of the movie is a composite of nearly simultaneous images in four different wavelengths of extreme ultraviolet light that were separated into color channels and then recombined with some level of transparency for each.

+ Click here for additional eclipse details
+ نوشته شده در  Mon 5 Mar 2007ساعت 5 PM  توسط A^2  | 



ISS014-E-15349 : Sunita Williams lifts treadmill
Image above: Assisted by the weightlessness of space, Flight Engineer Sunita Williams hoists the Treadmill Vibration Isolation System. Image credit: NASA

Aboard the International Space Station, the Expedition 14 crew members continued their work this week with scientific experiments, station maintenance and additional clean up following the Feb. 22 Russian spacewalk.

Friday, the three crew members participated in an experiment that tests hand-eye coordination before, during and after the mission to better understand how the brain adapts during spaceflight. The experiment will be performed again with Expedition 15.

A planned altitude reboost for the space station on Friday was cancelled and rescheduled for later this month. With the launch of the STS-117 shuttle mission delayed until no earlier than late April, Russian flight controllers now plan on two separate reboosts for the station.

The first reboost, now planned for around March 16, will position the station for the launch of the Expedition 15 crew and U.S. businessman Charles Simonyi on the Soyuz TMA-10 craft from the Baikonur Cosmodrome on April 7.

A second reboost on March 28 improves rendezvous opportunities for Atlantis’ flight and brings the station into the correct trajectory for the returning Soyuz craft to land in Kazakhstan on April 19 with Expedition 14 Commander Mike Lopez-Alegria, Flight Engineer Mikhail Tyurin and Simonyi.

Flight Engineer Suni Williams participated in robotics proficiency training with a computer-based simulation Wednesday. This training program maintains the crew's skill level in using Canadarm2 without actually moving the robotic arm.

On Tuesday, the International Space Station Independent Safety Task Force issued its final report. It was released simultaneously to Congress, NASA and the public.

+ View Report (3.7 Mb PDF)

+ Spacewalkers Retract Antenna
+ Read more about Expedition 14
+ Read more about Expedition 15
+ View Crew's Daily Timelines


Why Explore Space?

Completing the International Space Station, explains NASA Administrator Mike Griffin, is an integral part of the Vision for Space Exploration.

"Today," Griffin writes, "NASA is moving forward with a new focus for the manned space program: to go out beyond Earth orbit for purposes of human exploration and scientific discovery. And the International Space Station is now a stepping stone on the way, rather than being the end of the line."

+ Read More

+ نوشته شده در  Mon 5 Mar 2007ساعت 5 PM  توسط A^2  | 
NASA's Cassini spacecraft has captured never-before-seen views of Saturn from perspectives high above and below the planet's rings. Over the last several months, the spacecraft has climbed to higher and higher inclinations, providing its cameras with glimpses of the planet and rings that have scientists gushing.

"Finally, here are the views that we've waited years for," said Dr. Carolyn Porco, Cassini imaging team leader at the Space Science Institute in Boulder, Colo. "Sailing high above Saturn and seeing the rings spread out beneath us like a giant, copper medallion is like exploring an alien world we've never seen before. It just doesn't look like the same place. It's so utterly breath-taking, it almost gives you vertigo."

Blinding SaturnImage right: Taking in Saturn's rings in their entirety was the focus of this particular imaging sequence. Image credit: NASA/JPL/Space Science Institute
+ Full image and caption
+ More images

The images taken over last two months are being released today and include black and white and color mosaics, as well as a dramatic movie sequence showing the rings as they appeared to Cassini while it sped from south to north, rapidly crossing the ring plane. Also released is a playful view of the rings from high above, with the planet removed.

Cassini's highly inclined orbits around Saturn will be progressively lowered so that, by late June-- three years after entering orbit -- the spacecraft will once more be orbiting in the ring plane.

The new images and movie are available at: http://www.nasa.gov/cassini , http://saturn.jpl.nasa.gov and http://ciclops.org .

The Cassini-Huygens mission is a cooperative project of NASA, 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 Cassini-Huygens 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 team is based at the Space Science Institute, Boulder, Colo.


Media contacts: Carolina Martinez 818-354-9382
Jet Propulsion Laboratory, Pasadena, Calif.

Preston Dyches 720-974-5859
Cassini Imaging Central Laboratory for Operations
Space Science Institute, Boulder, Colo.

2007-022

+ نوشته شده در  Mon 5 Mar 2007ساعت 4 PM  توسط A^2  | 

پشتیبانی هابل و چاندرا از افق‌های نو

تلسکوپ فضایی هابل از چند هفته قبل از گذر فضاپیمای افق‌های نو از کنار مشتری به عکس برداری از این سیاره و قمر‌های آن پرداخته است. این تلسکوپ به منظور حمایت و پشتیبانی از کارهای علمی افق‌های نو و تکمیل آن‌ها این عکس‌ها را تهیه کرده است. همچنين تلسکوپ فضایی چاندرا عکس‌هایی را از این سیاره در طول موج ايکس تهیه کرده است.  بقیه در ادامه ی مطلب
پيمان اکبرنيا
 

ادامه مطلب
+ نوشته شده در  Mon 5 Mar 2007ساعت 4 PM  توسط A^2  | 
جای همگی خالی بود نه نبود  من که اصلا تصمیمی نداشتم برم واسه برنامه ماه گرفتگی نمیدونم اون شب یه دفه چی شد تصمیمم برگشت تلفن رو برداشتم شروع کردم به زنگ زدن به دوستای مشتاق این جور برنامه های شب زنده داری  در نهایت در ساعت ده نیمه شب یه آدم بیکار مثل من پیدا شد اومد همراه من  هر چی فکر کردم توی این سوز و سرما کجا برم گزینه ای بهتر از دانشگاه شهید باهنر پیدا نشد که نشد بعد از طی مسافتی از شمال شهر به جنوب شهر سرانجام رسیدیم جلوی سر در دانشگاه اما  .....
ادامه مطلب
+ نوشته شده در  Mon 5 Mar 2007ساعت 4 PM  توسط A^2  | 
THEMIS Launches!

THEMIS launch

Image above: The Delta II rocket with NASA's THEMIS spacecraft aboard lifts off Pad 17-B. Photo credit: NASA + View High-res

Taking multitasking to new heights, NASA launched the five THEMIS satellites aboard a single Delta II rocket from Cape Canaveral Air Force Station in Florida at 6:01 p.m. EST. Racing into space on the flaming power of three rocket stages and nine solid rocket motors, the THEMIS satellites will soon disperse around Earth to monitor auroras like the Northern Lights.

NASA is undertaking the mission to investigate what causes auroras in the Earth's atmosphere to change in appearance and dissipate. Discovering why the light of auroras can fluctuate and fade will provide scientists with important details on how the planet's protective magnetosphere works and on the sun-Earth connection.

The Mission
THEMIS is a mission to investigate what causes auroras in the Earth's atmosphere to dramatically change from slowly shimmering waves of light to wildly shifting streaks of color. Discovering what causes auroras to change will provide scientists with important details on how the planet's magnetosphere works and the important Sun-Earth connection.
+ Read more
+ نوشته شده در  Wed 28 Feb 2007ساعت 9 AM  توسط A^2  |