Michael A. Hearn, astronom yang menempatkan pesawat ruang angkasa di ... - sistem lampu lalu lintas surya

Michael a Hearn, the chief architect and director of a comet and spacecraft's intentional space collision, has pushed mankind's eternal exploration of the secrets of the solar system, died in May 29 at the home of University of Maryland Park. He was 76.
His wife, Maxine a' hearn, said the reason was pancreatic cancer.
An astronomy and honorary professor at the University of Maryland
A' hearn is the chief scientist of NASA's mission known as "Deep Impact," in which A crash spacecraft is fired directly into the path of A speeding comet.
Jim Green, NASA's director of planetary science, said in an interview: "never tried such a thing before . ".
Green says a' hearn is proposing to "make a hole" in the comet and see what's inside. At 1:52 a. m.
On July 4, 2005, a 23,000-mile-per-hour collision occurred 83 million miles from Earth.
It has become the headline news and news broadcast all over the world.
Achieve symbolic fourthof-
On July, the spacecraft was launched from Cape Canaveral, Florida, on January. 12, 2005.
The machine consists of two parts: one is a "flying over" process with precision recording equipment, the other is a removable "impactor" and the other is 820-
Refrigerator-pound
The size of the comet.
The comet, known as Tempel 1, is about nine miles long and three miles long.
7 miles wide, moving around the sun in the 1/2-year elliptical orbit between Jupiter and Mars.
When the comet and impactor spacecraft collided with what is said to be a force equivalent to 1/2 tons, there was a dazzling beam of light and a huge explosion of gas and cold debris.
Scientists have always believed that the comet contains substances left over from the formation of the solar system.
They want to look inside the Tempel 1 to see if the inside view will generate more information.
From the impact of the Tempel 1 and later overflight observations of other comets, the scientific community gained "a comprehensive rethink of our understanding of comet formation and how they work ", a' hearn said at 2013 when it announced the official end of the "Deep Impact" task.
"These tiny, icy remains formed in our solar system are much more diverse than we thought, whether from another part of a comet, or even from another part of a comet, he said.
Michael Francis a Hearn lahir pada bulan November di Wilmington, Delaware.
1940. Tumbuh besar di Boston.
Ia lulus dari Boston College dan menerima gelar doktor di bidang astronomi dari Universitas Wisconsin pada tahun 1966.
Pada tahun itu, ia bergabung dengan fakultas di Universitas Maryland.
Ia diangkat sebagai profesor universitas terkemuka pada tahun 2000.
Dia memenangkan gelar kehormatan pada tahun 2011, tetapi telah melakukan penelitian di Universitas tersebut.
Para kerabat yang ditinggalkan termasuk istrinya, Maxine Ramold A'Hearn, yang dinikahinya pada tahun 1963, dari University Park;
Brian J.
Kevin P. Dari Universitas Oxford, Inggris.
A'Hearn dan Patrick N dari Vienna, Virginia.
Sebuah hotel di Seattle;
Dan lima cucu.
Di luar laboratorium dan ruang kelas, a' hearn adalah seorang pelaut yang antusias.
Dia mengatakan kepada teman-temannya bahwa dia paling ingin menjadi kapten jika dia tidak menjadi penulis.
Dahulu, ia menggabungkan karier dengan hobinya dengan mengajar kursus tentang navigasi bintang.
Dia menyukai pakaian kasual, dan terkadang dikatakan bahwa pakaian formal berarti celana pendek dan kemeja Hawaii.
Pada tanggal 12 Juni, ia akan dianugerahi medali pengabdian publik luar biasa dari NASA.
Setelah bertabrakan dengan Tempel 1, "Deep Impact" terbang di atas pesawat ruang angkasa tersebut dan terus melintasi ruang angkasa.
Pada bulan November 2010 dan Januari 2012, satelit ini cukup dekat dengan benda-benda langit lainnya sehingga dapat merekam data ilmiah yang berharga.
Para ilmuwan di NASA dan Universitas Maryland terus berkomunikasi dengan kapal tersebut dan melacak pergerakannya.
Namun pada Agustus 2013 mereka kehilangan kontak dan tidak pernah melanjutkan hubungan.
Sebulan kemudian, mereka secara resmi menyelesaikan misi tersebut.
Adapun komet Tempel 1, ia terus bergerak pada orbit elips seolah-olah tidak terjadi apa-apa atau hanya sedikit sekali yang terjadi.