Golden_Sun
True Gamer
السلام عليكم ،،
نقلاً من BBC امس حدث ما كان ينتظره العلماء طيلة السبع سنوات الماضية! .. مركبه فضائية ارسلت للفضاء سنه 1999 تمكنت امس من الوصول بسلام على سطح الارض! ..
After a brief search, the recovery team found the capsule
The capsule was prepared for onward transport to Johnson
The sample-return capsule was seen to streak across the sky
بصراحة WOW! ..
بالنسبة للمقاله هي طويلة .. انا اخذت اهم مافيها واللي حاب يعرف المزيد وصلة الخبر click me
نقلاً من BBC امس حدث ما كان ينتظره العلماء طيلة السبع سنوات الماضية! .. مركبه فضائية ارسلت للفضاء سنه 1999 تمكنت امس من الوصول بسلام على سطح الارض! ..
A capsule containing comet particles and interstellar dust has landed on Earth after a seven-year space mission.
The Stardust probe released the capsule as it flew back to Earth after a 4.6-billion-km (2.8-billion-mile) trip.
Scientists believe the first cometary dust samples ever returned to Earth will shed light on the origins of the Solar System.
After a brief search, the recovery team found the capsule
"It is amazing to think that such minute specks of dust can carry within them so much information about the origin of stars and planets" Prof Monica Grady, PSSRI
"We travelled about three billion miles in space, we visited a comet, grabbed a piece of it and it landed here on Earth this morning," Dr Don Brownlee, Stardust principal investigator, told reporters at a news briefing in Utah.
"I fully expect textbooks in the future will have a lot of new information from the samples that landed here this morning."
The capsule was prepared for onward transport to Johnson
On Tuesday, it will be transported to a special lab at Nasa's Johnson Space Center in Houston, Texas, where scientists will get their first chance to examine the precious contents.
The capsule was prepared for onward transport to Johnson
"I'm very confident we will have samples in there that are the first returned from beyond the Moon," former Stardust project manager, Ken Atkins, told the BBC News website.
"It is magnificent to see something that we saw leave the planet on 7 February 1999 return to the planet here on 15 January 2006."
The sample-return capsule was seen to streak across the sky
It swept up particles from the frozen body of ice and dust, flying to within 240km (149 miles) of the comet's core, or nucleus.
As part of its trip, the probe also captured a sprinkling of dust that originated in distant stars.
The Stardust mothership has now completed its main mission and has been sent into orbit around the Sun.
The sample-return capsule was seen to streak across the sky
"Stardust could provide a new window into the distant past" Dr Simon Green
The capsule is believed to contain about a million particles of comet and interstellar dust left over from the birth of the Solar System 4.6 billion years ago.
They are trapped inside cells filled with an ultra-light solid called aerogel.
About 150 scientists around the world will get a chance to carry out a preliminary analysis of the contents, including researchers at the UK's Open University (OU).
Comets are thought to be cosmic "time capsules", containing material unchanged since the formation of the Sun and planets.
Some even think they may haveseeded Earth with the chemical building blocks required for life.
"Stardust could provide a new window into the distant past," said Dr Simon Green of the PSSRI.
"Because these particles have come from inside a comet, we know that essentially the particles haven't been heated since they became part of the comet, because the comet is made of ice," he told the BBC News website.
بصراحة WOW! ..
بالنسبة للمقاله هي طويلة .. انا اخذت اهم مافيها واللي حاب يعرف المزيد وصلة الخبر click me