Official Confirms NASA Plan to Capture an Asteroid
- [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ]
An artist’s illustration of an asteroid retrieval spacecraft capturing a 7-meter-wide, 500-ton asteroid. Rick Sternbach/Keck Institute for Space Studies.z
Rumors have been leaking out for over a week, but now according to [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] , a senior Obama administration official has confirmed that $100 million is being sought for NASA’s budget request for the coming fiscal year for a robotic spaceship to capture a small asteroid and park it near the Moon for astronauts to explore. The spacecraft would capture a 500-ton, 25-foot asteroid in 2019. Then using an Orion space capsule, a crew of about four astronauts would station-keep with the spacerock in 2021 for EVAs for exploration. This plan would accelerate NASA’s deep space missions with Orion and prepare crews for going to Mars.
NBC news quoted the official — who spoke on condition of anonymity because there was no authorization to discuss the plan publicly — as saying the mission would “accomplish the president’s challenge of sending humans to visit an asteroid by 2025 in a more cost-effective and potentially quicker time frame than under other scenarios.”
A week ago, [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] that NASA was considering this asteroid mission, which was proposed by the Keck Institute for Space Studies last year. Keck’s proposal had a price tag of $2.6 billion, but no cost estimate for the space agency’s version has yet been released.
Then on April 5, the [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] U.S. Sen. Bill Nelson, D-Florida, Nelson, chairman of the Senate science and space subcommittee, that President Obama is putting $100 million in planning money for the accelerated asteroid mission in the 2014 budget that comes out next week. The money would be used to find the right small asteroid.
“It really is a clever concept,” AP quoted Nelson said in a press conference in Orlando. “Go find your ideal candidate for an asteroid. Go get it robotically and bring it back.”
This would be the first time ever an object in space of this size would be manipulated in such a manner.
Donald Yeomans, who heads NASA’s Near Earth Object program, was quoted that while there are thousands of asteroids around 25-feet, finding the right one that comes by Earth at just the right time to be captured will not be easy. And once a suitable rock is found it would be captured with the space equivalent of “a baggie with a drawstring. You bag it. You attach the solar propulsion module to de-spin it and bring it back to where you want it.”
A 25-foot asteroid is not a threat to Earth because asteroids of that size would burn up in Earth’s atmosphere.
The official quoted by NBC said the plan has been under discussion for months, but after February’s meteor blast over Russia, the plan gained traction. The asteroid’s entry into Earth’s atmosphere and subsequent airblast injured more than 1,000 people, and sparked discussions about asteroid threats, including a series of congressional hearings. Congressional officials said they would support more funding to counter asteroid threats.
“This plan would help us prove we’re smarter than the dinosaurs,” NBC quoted said the official, referring to the asteroid that wiped out the dinosaurs and many other species 65 million years ago.z
آغاز آزمایش صوتی قدرتمندترین موشک تاریخ
۱۰ سال در مریخ؛ «فرصت» همچنان پیش میرود
An Orion exploration vehicle approaches a near-Earth asteroid in this artist's conception.
پنج اتفاق نجومی مهم این هفته
Such a mission would be carried out in 2021 under the White House's new plan for NASA exploration beyond Earth orbit.z
[ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ]
NASA's accelerated vision for exploration calls for moving a near-Earth asteroid even nearer to Earth, sending out astronauts to bring back samples within a decade, and then shifting the focus to Mars, a senior Obama administration official told NBC News on Saturday.
The official said the mission would "accomplish the president's challenge of sending humans to visit an asteroid by 2025 in a more cost-effective and potentially quicker time frame than under other scenarios." The official spoke on condition of anonymity because there was no authorization to discuss the plan publicly.
The source said more than $100 million would be sought for the mission and other asteroid-related activities in its budget request for the coming fiscal year, which is due to be sent to Congress on Wednesday.
آیا دنیای ما واقعی است؟!
That confirms [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] by Sen.
راز گوناگونی سیارک ها
Bill Nelson, D-Fla., a one-time spaceflier who is now chairman of the Senate Commerce Subcommittee on Science and Space.
دانش بیش از اندازه، جهان را به استقبال مرگ میبرد!
It also confirms a report about the mission that appeared last month in [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] .
The asteroid retrieval mission is based on a [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] set out last year by a study group at the Keck Institute for Space Studies.
نخستین تصویر «کنجکاوی» از زمین ارسال شد + تصاویر
NASA's revised scenario would launch a robotic probe toward a 500-ton, 7- to 10-meter-wide (25- to 33-foot-wide) asteroid in 2017 or so.
چالش نظریه جدید هاوکینگ توسط فیزیکدانان بزرگ
The probe would capture the space rock in a bag in 2019, and then pull it to a stable orbit in the vicinity of the moon, using a next-generation solar electric propulsion system.
That would reduce the travel time for asteroid-bound astronauts from a matter of months to just a few days.
The Keck study estimated the total mission cost at $2.6 billion — but the administration official said the price tag could be reduced to $1 billion, or roughly $100 million a year, if the mission took advantage of an already-planned test flight for NASA's heavy-lift Space Launch System rocket and Orion crew exploration vehicle.
That flight would send astronauts [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] .
"This mission would combine the best of NASA's asteroid identification, technology development, and human exploration efforts to capture and redirect a small asteroid to just beyond the moon to set up a human mission using existing resources and equipment, including the heavy-lift rocket and deep-space capsule that have been under development for several years," the official said in an email.
The 2014 budget would set aside $78 million for planning the asteroid retrieval mission, plus $27 million to accelerate NASA's efforts to detect and characterize potentially hazardous asteroids.
The federal government currently spends $20 million annually on asteroid detection.
Meteor sparked action
The official said the plan had been under discussion for months, but coalesced after [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] .
The meteor's breakup injured more than 1,000 people and sparked a worldwide sensation.
It also sparked a series of congressional hearings about threats from space, during which Republicans as well as Democrats hinted that they would [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] .
"This plan would help us prove we're [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] ," said the official, referring to the asteroid that wiped out the dinosaurs and many other species 65 million years ago.
An asteroid in the 7- to 10-meter range would be about half as wide as the one that broke up over Russia.
That's far too small to pose any threat to Earth, even if the space rock was coming directly at our planet.
But the captured asteroid could provide valuable insights for dealing with bigger ones in the future.
Initial preparations for the mission won't have to wait for a deal to end budget sequestration, or approval of the budget for the 2014 fiscal year.
NASA would begin immediately to identify the asteroid for retrieval, and take advantage of existing efforts funded by the agency's science, technology and human exploration directorates.
The most expensive element of the plan, the multibillion-dollar Orion/SLS launch system, is already being funded under the terms of an agreement with Congress.
Discussions with NASA's international and commercial partners will continue in the months and years ahead, the official said.
The retrieved asteroid could conceivably become a target for other scientific missions or asteroid-mining operations.
In the process, governments might have to address issues surrounding the ownership and exploitation of space resources.
"We're trying to force the question," the official said.
"We're trying to push the envelope on this new frontier."
Some observers have already raised questions about the plan, based on the advance reports.
Scott Pace, the director of George Washington University's Space Policy Institute, [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] s that it was a bad idea on scientific as well as diplomatic grounds.
It would be better for the United States to join forces with other countries to conduct a comprehensive survey of all potentially dangerous asteroids, Pace said.
Rick Tumlinson, chairman of an asteroid-mining venture [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] , said he was concerned that NASA's asteroid mission might interfere with private-sector efforts — and he called on NASA to rely on private enterprise wherever possible.
The administration official assured NBC News that cooperation with commercial ventures as well as other groups such as the [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] was part of the plan.
The official noted that the mission would provide a relatively low-cost route to satisfying President Barack Obama's [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] .
The lessons learned during the mission could be applied to future missions aimed at diverting other asteroids — perhaps to head off a potential threat, or conduct further scientific study, or exploit the potentially valuable resources that asteroids contain.
After the asteroid mission, NASA would turn its attention to a farther-out destination: Mars.
The Obama administration has called for astronauts to travel to the Red Planet and its moons by the mid-2030s, and that would be the next major target for space exploration.
The administration official told NBC News that other concepts, such as [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] or creating a [ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ] , are not on the agenda for the foreseeable future.z
مساعدت پریزیدنت اوباما
با اختصاص مبلغ 105 میلیون دلار به ناسا اختصاصآ برای اجرای این پروژه
باراک اوباما، رییس جمهور آمریکا در بودجه ی فدرال سال ۲۰۱۴ که روز چهارشنبه، ۱۰ آوریل منتشر شد،
مبلغ ۱۰۵ میلیون دلار را به ناسا برای آغاز کردن برنامه ای جهت به دام انداختن یک سیارک و ایستاندن (پارک کردن) اون نزدیک کره ی ماه اختصاص داده.
با انجام این کار که شاید تا سال ۲۰۲۱ انجام شود، فضانوردان خواهند توانست به کمک سامانهی پرتاب موشک فضایی ناسا و کپسول اوریون، از این سنگ آسمانی بازدید نمایند.