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11 Mar 2012

Protecting NASA From Hackers Is Not Rocket Science, Say Analysts
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Protecting NASA From Hackers Is Not Rocket Science, Say Analysts

Protecting NASA From Hackers Is Not Rocket Science, Say Analysts


Protecting NASA From Hackers Is Not Rocket Science, Say Analysts
Hackers have been having a field day with NASA systems, the space agency's inspector general has confessed. The problem may be due in part to underfunding, but 

Hackers have been having a field day with NASA systems, the space agency's inspector general has confessed. The problem may be due in part to underfunding, but security experts suggest some relatively simple and inexpensive measures could significantly improve the situation. "The major, major problem hurting NASA is they don't have a strong IT governance approach," said John Pescatore, security analyst with Gartner Research.

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NASA has become a popular target of hackers. The space agency's computer network was breached 13 times in 2011 -- to the point where suspected Chinese hackers gained "full functional control" of computers used by NASA's Jet Propulsion Laboratory," a government inspector general told congressional investigators.
The agency spends just US$58 million of its $1.5 billion annual budget on computer security, NASA inspector general Paul Martin said recently.
That low priority extends to physical security. Codes controlling the International Space Station, along with data on the agency's Constellation and Orion programs, were exposed after personnel lost unencrypted notebook computers, Martin told the U.S. House Committee on Science, Space and Technology.

Hackers Gained 'Full Control' of NASA Computers

In November, NASA learned hackers had taken "full functional control" of computers based at the JPL, according to the inspector general. The attack -- routed through an IP address based in China -- permitted them to steal NASA credentials, cover their tracks, and upload software designed to exploit further security vulnerabilities.
"Our review disclosed that the intruders had compromised the accounts of the most privileged JPL users, giving the intruders access to most of JPL's networks" Martin testified.

UK-Based NASA Hacker

Gary McKinnon, a 45-year-old hacker based in the UK, is accused of breaking into NASA computers, among other U.S. government networks during 2001 and 2002. In February, a 20-year-old hacker that went by the handle "TinKode" was arrested by Romanian police, charged with infiltrating NASA computers.
Although the agency watchdog suggests the rather trivial amount of spending aimed at computer security is to blame for the repeated hacking, the problem may be more deeply rooted.

'The Real Issue Is NASA'

It's no surprise the space agency has become a playground for hackers, said John Pescatore, security analyst with Gartner (NYSE: IT) Research.
"The real issue is NASA," he told TechNewsWorld.
"The major, major problem hurting NASA is they don't have a strong IT governance approach," said Pescatore.
NASA is like a fiefdom of competing opinions, he said, over things like whether to base networks on Windows or Macs, or whether laptops should carry security software. While these issues have been long resolved in the corporate world, NASA is different.

More Like a College Campus

"There is no such thing as a secure system that is not well-managed," Pescatore said.
The Social Security Administration, he noted, has top-down security rules governing everything from the type of computer employees can use to the brand of security installed on every desktop and laptop holding Social Security Numbers.
By comparison, NASA is "more like a college campus," Pescatore observed.
Although NASA's distributed organization helped during the U.S. push to the moon, what was once an advantage has become a negative. With the agency's lack of a clear mission following the end of space shuttle flights, the focus has moved away from security, he said.

Top Priorities: Stronger Leadership

What does NASA need to do to improve security? If he were made security czar, Pescatore said, his first move would be give NASA's chief information officer more power to enforce rules regarding security.
As Martin's testimony before Congress showed, the agency's CIO "can't enforce anything" now, he noted.
Another goal should be to reduce the number of entrances into NASA computer networks now available to hackers, Pescatore continued.
As the U.S. Defense Department discovered when its networks came under cyberattack, the agency must reduce the number of "trusted Internet connections" and closely watch their activity, he said.

NASA Is 'Hacker Honey'

Improvoing NASA security measures should start with the realization that its networks are "hacker honey," said independent security analyst Randy Abrams.
Unlike other agencies that might have data of direct commercial appeal, NASA is more of aRubik's Cube for hackers, he said. Because the space agency's computers hold interesting information and hackers tend to be intelligent, it makes an "enticing target."
One of Abrams' favorite vacation activities is to see what information tourists unwittingly left behind when using a hotel's public computers.
Although brainy, NASA employees may not be trained to avoid simple security mistakes, he suggested, and it might be a good idea for NASA to "phish" its staff to uncover security weaknesses.
source

26 Mar 2011

Pesawat Pemburu Komet 'Tutup Usia'
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Pesawat Pemburu Komet 'Tutup Usia'

Komet Tempel 1 dan satelit Stardust-NExT milik NASA (space.com)
Dengan satu klik pada mouse, Sandy Freund Kasper mengirimkan perintah ke pesawat pemburu komet tanpa awak milik NASA, Stardust, untuk membakar seluruh bahan bakarnya. Perintah ini memulai sebuah rangkaian pemberhentian operasi Stardust yang telah berjasa untuk ilmu astronomi selama 12 tahun.

"Rasanya seperti mengucapkan selamat jalan pada seorang teman," kata Allan Cheuvront, program manager Stardust dari perusahaan Lockheed Martin. Dia terlibat dengan Stardust sejak 1996, saat megaproyek itu masih berupa desain.

Cheuvront menambahkan, "Stardust adalah pesawat luar biasa. Dia selalu mengerjakan apa yang kami perintahkan. Hasilnya, selalu sempurna dan memuaskan."

Diluncurkan pada 1999, Stardust telah menyelesaikan misi utamanya pada 2006. Ketika itu, ia mengirimkan sampel kecil dari partikel komet Wild 2 ke Bumi via tabung parasut.

Stardust menjalankan misi terakhirnya pada Kamis lalu. Dengan menembakkan pendorong sampai bahan bakar hidrazinnya habis. Dari jejak pembakaran di bawah 2,5 menit, para ilmuwan mengetahui secara akurat berapa bahan bakar yang masih tersisa. Pada akhirnya, perhitungan tersebut dapat membantu desain dan operasi pesawat generasi berikutnya di masa depan.

"Perhitungan untuk menganalisis data bahan bakar memakan waktu beberapa hari," kata Jim Neuman, mission operations manager yang juga bekerja untuk Lockheed Martin. Dia kerap membuat dan mengoperasikan sejumlah pesawat satelit NASA.

Dari ruangan besar di Lockheed Martin, Denver-AS, Freund Kasper yang bertanggung jawab penuh atas Stardust, siap mengirimkan perintah ke pesawat tanpa awak itu.

Sebelum dia memberikan instruksi, Cheuvront mengumpulkan delapan hingga sembilan insinyur lain di ruang kerja. Mereka diberi label "Power", "Thermal", "Propulsion", dan beberapa peran lain. Masing-masing menunggu giliran untuk melakukan tugasnya.

Dia pun menghampiri Don Brownlee, kepala peneliti pada misi utama Stardust lima tahun silam, untuk mengambil sampel komet Wild 2. "Ini pengalaman sangat indah dan luar biasa," kata Brownlee pada Freund Kasper.

Pada pukul 16:41 waktu setempat, Freund Kasper melesatkan menginstruksi pada Stardust untuk mulai mengeksekusi misi pemberhentian ini. Sekitar 42 menit kemudian - waktu yang ditempuh untuk menyampaikan pesan ke Stardust yang terletak 93 juta mil dari Bumi dan mengirimkan responsnya kembali ke Bumi - para peneliti melihat api yang berkobar-kobar di layar komputer besar.

Saat bahan bakar habis terbakar, Stardust kehilangan kemampuan untuk menjaga antenanya agar tetap menunjuk ke bumi. Akhirnya, ruang kontrol kehilangan kontak raiod pada pukul 15:33 waktu setempat.

Tanpa bahan bakar, fungsi panel surya Stardust tidak akan berrfungsi dengan baik. Sekali baterainya terkuras, pesawat itu akan mati selamanya. (pet)• VIVAnews
sumber

22 Mar 2011

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Pertama Kali, Manusia Jamah Planet Merkurius

Planet Merkurius

Pesawat Messenger milik badan antariksa NASA telah berhasil mengorbiti Merkurius untuk pertama kali.

Setelah melakukan manuver yang rumit untuk menghindari gravitasi Matahari, pesawat ruang angkasa tak berawak bernamatersebut  sukses masuk ke jalur orbit pada Kamis malam waktu Florida setelah menempuh jarak 4,9 miliar mil, atau kurang lebih enam setengah tahun dari Bumi.

Pencapaian ini sekaligus menjadikan Merkurius sebagai planet kelima yang berhasil dijamah oleh manusia dalam tata surya kita. Demikian dilansir Associated Press, Selasa 22 Maret 2011. "Ini merupakan jarak terdekat dan paling sempurna yang bisa didapat," ujar Eric Finnegan, chief engineer Messenger.
Messenger mengelilingi Merkurius dengan jarak sangat dekat, sekitar 120 mil, setara 193 kilometer, di atas permukaan. "Semua orang berteriak dan bersorak-sorai. Kami sangat gembira. Memang, ada banyak pekerjaan menunggu kami. Tapi, setidaknya kami sudah ada di sana sekarang," jelas Finnegan.

Ternyata, Merkurius tidak sulit dicapai. Tapi, harus diingat bahwa ia merupakan planet berbatu dan bertemperatur paling ekstrim di tata surya. Rentang temperatur di permukaannya mencapai 593 derajat Celcius. Suhu di permukaannya bisa mencapai 426 derajat Celcius pada jarak terdekat dengan Matahari dan mencapai -148 derajat Celcius pada tengah malam.

Merkurius memang terkenal memiliki perpindahan temperatur ekstrim dari panas ke dingin. Entah kenapa siang hari jauh lebih lama ketimbang malam hari setiap tahunnya. Dan anehnya, meski planet ini paling dekat dengan matahari,  para ilmuwan menemukan adanya es berton-ton di kawahnya yang gelap.

Messenger direncanakan akan memasuki orbit Merkurius dan berputar-putar selama setahun. Untuk semua tugasnya itu, satelit senilai US$446 juta itu (Rp3,9 triliun), harus mampu bertahan dari tarikan gravitasi matahari.

Merkurius sendiri memiliki orbit yang sangat elips. Rentang jaraknya ke matahari sekitar 29 juta mil (47 juta kilometer) hingga 43 juta mil (69 juta kilometer) untuk jarak terjauhnya. Untuk diketahui, Merkurius mengorbiti matahari setiap 88 hari di Bumi.
• VIVAnews

5 Mar 2011

Nautilus: Not a Bad Way to Mars
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Nautilus: Not a Bad Way to Mars

 

Nautilus: Not a Bad Way to Mars


nautilus_1.jpg
NASA has proposed a new vessel for long term deep space exploration that would exist more like a space station than a simple space capsule like the Orion ship.  And with a Mars mission on everyone's mind the real question in the world of 2011 is inevitably, "How much will it cost?"  But NASA aims to build a space station that will not only take humans to Mars, but do so in a reasonably cost effective way.  And if that claim doesn't have enough weight to it, NASA proposes the ship will have a rotating centrifuge giving astronauts artificial gravity.

We were first brought the idea of a centrifuge system for gravity in films like 2001: A Space Odyssey.  And as technology advances, the highly computerized vessel making its way to the Martian surface may actually be fairly similar to the one designed for that very film.  Although hopefully the newer version will not include a murderous artificial intelligence system onboard.  Some fans of Mars expeditions have voiced in the blogosphere that it doesn't matter as long as humans set foot on the red planet.

There have also been many proposed modifications to the plans by people worldwide.  The idea of a habitation system that could ferry people to the Moon, Mars, and a number of other places is sure to have its share of fans, and proposals for changes.  But Ray Villard of Discovery News has some very interesting ones including laser based communications systems, an electricity based propulsion system (powered possibly even by nuclear power generators), and others.

The Nautilus will be constructed onboard the ISS according to NASA and the pieces would require three heavy lift launches to move it into place.  But once in orbit the craft could move around Earth's orbit, drop in on an asteroid moving slowly enough to catch, deploy bases and material to the Moon and even make that coveted journey between the planets all the way to Mars.  And with the centrifuge style gravity system in place onboard the vessel, this would be no doubt one of the most promising methods of getting explorers out that far.  Previously scientists at NASA were worried that Martian explorers would be virtually immobile after being left in the weightlessness of space for so long.  Their atrophied muscles would be unable to grapple with even Mars' low gravity and would instead have to figure out methods of deterring this muscle loss in a weightless environment.

So does this mean we may be able to actually make it to Mars this time?  With NASA facing serious budget cuts, hopes are turning to apprehension.  The project is expected to cost some $20 billion to build.
 



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  | Project Leader
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