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Saturday, February 17, 2018

Data from Voyager-1, Voyager 2 and Hubble will help when planning for interstellar flight


Information from the American automatic stations Voyager-1 and Voyager-2 , as well as the results of observations of the orbital telescope Hubble will help in the future when planning interstellar flights. This opinion was expressed in interview to the Internet portal Space.com astronomer researcher at Wesleyan University in Connecticut, Julie Zachary. “It’s important for us to know what objects exist beyond our Solar system, as we begin to think about the possibility of interstellar exploration missions, such as Breakthrough Starshot (“Leap to the stars”)”, – she noted.

In the framework of this project worth about $100 million can be sent to a small research spacecraft to the nearest star – alpha Centauri – and therefore all the information about interstellar space, which have collected and continue to collect Voyager-1 and Voyager-2 is extremely important. Now, Voyager-1, launched September 5, 1977, is located at the distance of 20.6 billion miles from Earth and moving at a speed of 61 thousand kilometers per hour. After about 40 thousand years he will be at a distance of 1.6 light years of the star Gliese 445 in the constellation of the Giraffe. Voyager 2, launched 16 days earlier, now removed from the Earth at a distance of 17 billion kilometers, 40 thousand years will be at a distance of 1.7 light years from the star Ross 248.

“Both spacecraft of the Voyager continues to transmit information through the system of deep space communications NASA – notes Space.com. – Both probe collect data that will enable the scientists to analyze the conditions in the interstellar medium, where there are clouds of gas and dust”. At the same time Julia Zachary and her colleagues study the results of observations by the orbiting Hubble telescope, those areas of space where Voyager. On the way Voyager 1 they found at least one gas cloud, and Voyager 2 is at least two. They were also able to measure the electron density of these clouds and found that one of them is higher. “We believe that the difference in the electron density indicates the difference in the composition of these clouds,” said Julie Zachary.

In addition, according to Space.com astronomers discovered in interstellar space, the ions of magnesium, iron, carbon and manganese. According to Zachary, experts believe that the automatic station Voyager is moving in the direction of those parts of space that have a very complex composition.
source

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