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هابل قمر جدیدی به دور پلوتو کشف کرد

NASA'S Hubble Discovers Another Moon Around Pluto

قمر جدید پلوتو

Astronomers using the Hubble Space Telescope discovered a fourth moon orbiting the icy dwarf planet Pluto. The tiny, new satellite, temporarily designated P4, was uncovered in a Hubble survey searching for rings around the dwarf planet.

The new moon is the smallest discovered around Pluto. It has an estimated diameter of 8 to 21 miles (13 to 34 km). By comparison, Charon, Pluto's largest moon, is 648 miles (1,043 km) across, and the other moons, Nix and Hydra, are in the range of 20 to 70 miles in diameter (32 to 113 km).

"I find it remarkable that Hubble's cameras enabled us to see such a tiny object so clearly from a distance of more than 3 billion miles (5 billion km)," said Mark Showalter of the SETI Institute in Mountain View, Calif., who led this observing program with Hubble.

 


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NASA Tests Future Deep Space Vehicle For Water Landings

NASA Tests Future Deep Space Vehicle For Water Landings

 As NASA closes the chapter on the Space Shuttle Program, a new era of exploration vehicles is beginning to take off.

Testing began this month at NASA's Langley Research Center in Hampton, Va., in the new Hydro Impact Basin to certify the Orion Multi-Purpose Crew Vehicle (MPCV) for water landings. The Orion MPCV will carry astronauts into space, provide emergency abort capability, sustain the crew during space travel and ensure safe re-entry and landing.

Engineers have dropped a 22,000-pound MPCV mockup into the basin. The test item is similar in size and shape to MPCV, but is more rigid so it can withstand multiple drops. Each test has a different drop velocity to represent the MPCV's possible entry conditions during water landings.


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NASA'S Next Mars Rover To Land At Gale Crater

NASA'S Next Mars Rover To Land At Gale Crater

NASA's next Mars rover will land at the foot of a layered mountain inside the planet's Gale crater.

The car-sized Mars Science Laboratory, or Curiosity, is scheduled to launch late this year and land in August 2012. The target crater spans 96 miles (154 kilometers) in diameter and holds a mountain rising higher from the crater floor than Mount Rainier rises above Seattle. Gale is about the combined area of Connecticut and Rhode Island. Layering in the mound suggests it is the surviving remnant of an extensive sequence of deposits. The crater is named for Australian astronomer Walter F. Gale.

"Mars is firmly in our sights," said NASA Administrator Charles Bolden. "Curiosity not only will return a wealth of important science data, but it will serve as a precursor mission for human exploration to the Red Planet."

During a prime mission lasting one Martian year -- nearly two Earth years -- researchers will use the rover's tools to study whether the landing region had favorable environmental conditions for supporting microbial life and for preserving clues about whether life ever existed.

"Scientists identified Gale as their top choice to pursue the ambitious goals of this new rover mission," said Jim Green, director for the Planetary Science Division at NASA Headquarters in Washington. "The site offers a visually dramatic landscape and also great potential for significant science findings."

In 2006, more than 100 scientists began to consider about 30 potential landing sites during worldwide workshops. Four candidates were selected in 2008.

An abundance of targeted images enabled thorough analysis of the safety concerns and scientific attractions of each site. A team of senior NASA science officials then conducted a detailed review and unanimously agreed to move forward with the MSL Science Team's recommendation. The team is comprised of a host of principal and co-investigators on the project.

Curiosity is about twice as long and more than five times as heavy as any previous Mars rover. Its 10 science instruments include two for ingesting and analyzing samples of powdered rock that the rover's robotic arm collects. A radioisotope power source will provide heat and electric power to the rover. A rocket-powered sky crane suspending Curiosity on tethers will lower the rover directly to the Martian surface.

The portion of the crater where Curiosity will land has an alluvial fan likely formed by water-carried sediments. The layers at the base of the mountain contain clays and sulfates, both known to form in water.

"One fascination with Gale is that it's a huge crater sitting in a very low-elevation position on Mars, and we all know that water runs downhill," said John Grotzinger, the mission's project scientist at the California Institute of Technology in Pasadena, Calif. "In terms of the total vertical profile exposed and the low elevation, Gale offers attractions similar to Mars' famous Valles Marineris, the largest canyon in the solar system."

Curiosity will go beyond the "follow-the-water" strategy of recent Mars exploration. The rover's science payload can identify other ingredients of life, such as the carbon-based building blocks of biology called organic compounds. Long-term preservation of organic compounds requires special conditions. Certain minerals, including some Curiosity may find in the clay and sulfate-rich layers near the bottom of Gale's mountain, are good at latching onto organic compounds and protecting them from oxidation.

"Gale gives us attractive possibilities for finding organics, but that is still a long shot," said Michael Meyer, lead scientist for NASA's Mars Exploration Program at agency headquarters. "What adds to Gale's appeal is that, organics or not, the site holds a diversity of features and layers for investigating changing environmental conditions, some of which could inform a broader understanding of habitability on ancient Mars."

The rover and other spacecraft components are being assembled and undergoing final testing. The mission is targeted to launch from Cape Canaveral Air Force Station in Florida between Nov. 25 and Dec. 18. NASA's Jet Propulsion Laboratory in Pasadena manages the mission for the agency's Science Mission Directorate in Washington.

To view the landing site and for more information about the mission, visit:

http://www.nasa.gov/msl


 

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Station Crew Views Shuttle Landing

Station Crew Views Shuttle Landing

 

فضانوردان ایستگاه فضایی شاهد فرود شاتل آتلانتیس بودند

This unprecedented view of the space shuttle Atlantis, appearing like a bean sprout against clouds and city lights, on its way home, was photographed by the Expedition 28 crew of the International Space Station. Airglow over Earth can be seen in the background.


 

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Atlantis and Crew Welcomed Home

Atlantis and Crew Welcomed Home

The STS-135 astronauts got to take a look at the vehicle that carried them on the final space shuttle mission, and paused for a moment to reflect on the journey.

"Although we got to take the ride," said Commander Chris Ferguson on behalf of his crew, " we sure hope that everybody who has ever worked on, or touched, or looked at, or envied or admired a space shuttle was able to take just a little part of the journey with us."

In the shadow of Atlantis as it sat on the runway at Kennedy Space Center's Shuttle Landing Facility, the crew was welcomed back by senior NASA officials, including NASA Administrator Charles Bolden.

"They have come to be known as the 'final four.' They did an absolutely incredible job," said Bolden. "They made us very proud."

A shuttle program post-landing news conference is set for 10 a.m. EDT, followed by a crew news conference at noon. Both will be carried live on NASA TV and online at www.nasa.gov/ntv. Participants in the 10 a.m. panel will be Bill Gerstenmaier, associate administrator for Space Operations, Bob Cabana, Kennedy center director, Mike Moses, space shuttle launch integration manager, and Mike Leinbach, space shuttle launch director.

Atlantis landed at 5:57 a.m. EDT, after 200 orbits around Earth and a journey of 5,284,862 miles.

The STS-135 crew consisted of Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandra Magnus and Rex Walheim. They delivered more than 9,400 pounds of spare parts, spare equipment and other supplies in the Raffaello multi-purpose logistics module - including 2,677 pounds of food - that will sustain space station operations for the next year. The 21-foot long, 15-foot diameter Raffaello brought back nearly 5,700 pounds of unneeded materials from the station.

A welcome home ceremony for the astronauts will be held Friday, July 22, in Houston. The public is invited to attend the 4 p.m. CDT event at NASA's Hangar 990 at Ellington Field. Gates to Ellington Field will open at 3:30 p.m. The ceremony will be broadcast live on NASA Television.
This e-mail update was generated automatically based on your subscriptions. Some updates may belong to more than one category, resulting in duplicate notices.


 

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هابل قمر جدیدی به دور پلوتو کشف کرد

The full news release story:

NASA'S Hubble Discovers Another Moon Around Pluto

NASA's Hubble Discovers Another Moon Around Pluto


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NASA's Proud Space Shuttle Program Ends With Atlantis Landing

NASA's Proud Space Shuttle Program Ends With Atlantis Landing

Agency Ushers in Next Era of Exploration

CAPE CANAVERAL, Fla. -- Wrapping up 30 years of unmatched achievements and blazing a trail for the next era of U.S. human spaceflight, NASA's storied Space Shuttle Program came to a "wheels stop" on Thursday at the conclusion of its 135th mission.

Shuttle Atlantis and its four-astronaut crew glided home for the final time, ending a 13-day journey of more than five million miles with a landing at 5:57 a.m. EDT at NASA's Kennedy Space Center in Florida. It was the 26th night landing (20th night and 78th total landings at Kennedy) and the 133rd landing in shuttle history.

"The brave astronauts of STS-135 are emblematic of the shuttle program -- skilled professionals from diverse backgrounds who propelled America to continued leadership in space with the shuttle's many successes," NASA Administrator Charles Bolden said. "This final shuttle flight marks the end of an era, but today, we recommit ourselves to continuing human spaceflight and taking the necessary- and difficult - steps to ensure America's leadership in human spaceflight for years to come."

....

 


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پايان عصر شاتل‌هاي فضايي

پايان عصر شاتل‌هاي فضايي

شاتل شهرام یزدان پناه

جام جم آنلاين: حدود 6 ماه قبل از قدم گذاشتن تاريخي نيل آرمسترانگ بر سطح خاكستري رنگ ماه، ناسا طرحي را در دستور كار خود قرار داده بود كه آن روزها فازA ناميده مي‌شد و هدف آن ساخت وسيله نقليه‌ فضايي ارزان قيمتي بود كه بتواند چندين بار مورد استفاده قرار گيرد.

 


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The Voyage Home

The Voyage Home

فرود آخرین شاتل

best quality

Space shuttle Atlantis' bright-white, iconic frame illuminates the darkness as it touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim. On the 37th shuttle mission to the International Space Station, STS-135 delivered more than 9,400 pounds of spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles.


 

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Two NASA Probes Tackle New Mission: Studying The Moon

Two NASA Probes Tackle New Mission: Studying The Moon

artemis آرتمیس

Two small NASA probes that had been used to study space weather now are orbiting the moon to study its interior and surface composition.

The spacecraft, called Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS), began their journey away from Earth's orbit in July 2009. The first spacecraft entered lunar orbit on June 27, and the second on July 17.


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NASA Book Available For Visually Impaired To Learn About Moon

NASA Book Available For Visually Impaired To Learn About Moon

MOFFET FIELD, Calif. -- NASA has released a new book for visually impaired people to experience the wonders of the moon.
Called "Getting a Feel for Lunar Craters," the 17-page book features Braille and tactile diagrams of the lunar surface, craters and peaks.


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Shuttle Set to Undock Early Tuesday

Shuttle Set to Undock Early Tuesday

پایان یک آغاز

The crews of space shuttle Atlantis and the International Space Station are separated by closed hatches for the first time in eight days. They have gone to sleep, closing a busy day that featured the return of the Raffaello multi-purpose logistics module to Atlantis’ cargo bay and an emotional farewell ceremony.

Wakeup at 9:59 p.m. EDT will begin undocking day in space, as a space shuttle leaves the station for the final time.


 

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NASA Dawn Spacecraft Returns Close-Up Image Of Asteroid Vesta

NASA Dawn Spacecraft Returns Close-Up Image Of Asteroid Vesta

NASA's Dawn spacecraft has returned the first close-up image after beginning its orbit around the giant asteroid Vesta. On Friday, July 15, Dawn became the first probe to enter orbit around an object in the main asteroid belt between Mars and Jupiter.

The image taken for navigation purposes shows Vesta in greater detail than ever before. When Vesta captured Dawn into its orbit, there were approximately 9,900 miles (16,000 kilometers) between the spacecraft and asteroid. Engineers estimate the orbit capture took place at 10 p.m. PDT.

...


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Hatches Closed Between Station and Shuttle for Final Time

Hatches Closed Between Station and Shuttle for Final Time

Following a poignant farewell ceremony by the crews of Atlantis and Expedition 28, hatches between the International Space Station and a space shuttle were closed for the final time at 10:28 a.m. EDT.

The hatches between the spacecraft were open for seven days, 21 hours and 41 minutes.

Atlantis' crew will spend the remainder of today preparing for Tuesday's early morning undocking. The station crew goes to sleep at 1:29 p.m. and the shuttle crew follows at 1:59 p.m.


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Survival of the Elements

Survival of the Elements

This close-up image shows the 'Materials on International Space Station Experiment-8.' Taken during the spacewalk on July 12, 2011, the small circles pictured are test beds for materials and computing elements attached to the outside of the International Space Station. These elements are being evaluated for the effects of atomic oxygen, ultraviolet, direct sunlight, radiation, and the extremes of heat and cold. Researchers hope the results will provide a better understanding of the durability of various materials and computing elements when they are exposed to the rigors of space environments and hope to incorporate what is learned into the design of future spacecraft.


 

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۱۵ جولای فضاپیمای ناسا وارد مدار سیارک بزرگ وستا می شود

۱۵ جولای فضاپیمای ناسا وارد مدار سیارک بزرگ وستا می شود

فضاپیمای Dawn ناسا در روز ۱۵ جولای برای اولین بار وارد مداری به دور یک سیارک از کمربند سیارک ها خواهد شد. دیدار و مصافی طولانی با سیارک« وستا».

سیارک وستا


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NASA Spacecraft To Enter Large Asteroid's Orbit On July 15

NASA Spacecraft To Enter Large Asteroid's Orbit On July 15

PASADENA, Calif. -- On July 15, NASA's Dawn spacecraft will begin a prolonged encounter with the asteroid Vesta, making the mission the first to enter orbit around a main-belt asteroid.

سیارک وستا


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شنبه 25 تیر90 فرصت دیگری برای تعیین قبله

 شنبه 25 تیر90 فرصت دیگری برای تعیین قبله

 

 


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آخرين كسوف 88 و اولين آن در سال 2010 ميلادي

آخرين كسوف 88 و اولين آن در سال 2010 ميلادي 

 کسوف و يا خورشيد گرفتگي همواره در بين علاقمندان و مردم خوبمان طرفداران زيادي داشته است. اين بار روز جمعه 25 دي ماه جاري خورشيد گرفتگي رخ خواهد داد که از آفريقا آغاز و پس از عبور از اقيانوس هند درجنوب شرق آسيا و چين آرام خواهد گرفت. اين کسوف با توجه به اينکه ماه در حداکثر فاصله از زمين است و نمي تواند تمام قرص خورشيد را بپوشاند،

 


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نوشته شده توسط ITS GROUP در چهارشنبه شانزدهم دی 1388 ساعت 15:15 موضوع آسمان ماه | لینک ثابت


كشف جالب فضاپيماي وويجر

 

دو فضاپيماي وويجر ناسا فراتر از مدار پلوتو و در آستانه ورود به فضاي ميان ستاره‌اي قراردارند.


منظومه شمسي در حال حركت در ميان ابر بين ستاره‌اي است كه ستاره‌شناسان آن را ابر ميان ستاره‌اي محلي يا Fluff مي‌نامند. اين ابر داراي پهنايي برابر تقريبا 30 سال نوري  و تركيبي از اتم‌هاي هيدروژن و هليم مي‌باشد و در دماي 6000 درجه سانتي گراد قرار دارد.

 فيزيك‌دانان نمي‌توانستند وجود اين ابر را در اطراف منظومه شمسي توجيه كنند تا اين كه در 24 دسامبر تيمي از دانشمندان اعلام كردند كه  فضاپيماي وويجر ناسا، اين مسئله را حل كرده است.


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