Showing posts with label sun. Show all posts
Showing posts with label sun. Show all posts

Friday, 14 June 2019

ISRO aims for the stars: Plans space station, missions to Venus and Sun

Isro said the space station would be a small module and underlined that there were no commercial plans for tourism purposes
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India intends to have its own space station sooner rather than later as the nation’s summit space office builds up a three-pronged way to deal with extending its quality in the external skies. The methodology centers around constant dispatch of cutting edge satellites, missions to other planetary bodies, and having an Indian in space in possess rocket.
The Gaganyaan program, India’s lady mission to take human in space, booked for 2022, would be reached out to dispatch the space station, Kailasavadivoo Sivan, director of the Indian Space Research Organization (ISRO), said on Thursday. A space station is a rocket in circle around the Earth which fills in as a base for space travelers and cosmonauts to do logical examinations.
“We need to continue the Gaganyaan program after the dispatch of the human space mission. In this specific situation, India is wanting to have its own space station,” Sivan said. The administration has put aside a spending limit of Rs 10,000 crore for Gaganyaan. There would be two flights from Andhra Pradesh’s Sriharikota without the team before the lady trip with group at some point in 2022. “We are pointing that previously or around India’s 75th Independence Day in 2022,” said Jitendra Singh, clergyman of state at the Prime Minister’s Office.
Isro said the proposed space station would be a little module, and that there were no business designs thusly. “The station would be utilized to lead small scale gravity tests. The underlying arrangement is to check if space explorers can remain for 15-20 days in space. In any case, the particular subtleties would rise after India finishes up its previously kept an eye on mission,” said an ISRO official.

Thursday, 11 April 2019

First ever images of black hole: How this landmark achievement came about

Apart from the basic science insights EHT has already produced, the technologies and algorithms developed for this research are likely to find many other applications
Black hole
The release of the first ever images of a black hole on April 10, marked the culmination of an enormous collaborative effort that lasted several years. It involved a pool of 200-odd scientists spread across 13 different institutions, and drawn from multiple disciplines. In some ways, the most impressive contributions came from the mathematicians and computer scientists who patched data together to create the images.
This was a very impressive feat. The black hole in question is 55 million light years away and occupies less volume of space than the solar system. “Zooming” in on it required a telescope powerful enough to read a newspaper on a Paris newsstand, while sitting in New York. A single telescope that powerful (capable of capturing a 20 microsecond-arc of a circle) would be about the size of the Earth itself.
The Event Horizon Telescope (EHT) actually consists of eight different radio-telescopes spread across four continents, including Antarctica. This method of putting together data from different telescopes to create a single image is called Very Long Baseline Interferometry. The data was synchronised using atomic clocks. Even VLBI could not produce complete images for an object that small and distant. It was like a jigsaw puzzle with many pieces missing. and very clever algorithms were required to fill in missing details.
The measurements derived by EHT tell us that the target, the black hole at the centre of the Virgo A Galaxy (also known as M87 and NGC486) is a “supermassive” black hole. It has a mass some 6.5 billion times that of the sun and a radius of about 40 million km, which is about the distance from the sun to Neptune. This is the black disc in the centre of the image. The event horizon – the orange ring around the black disc – is caused by superhot matter, travelling at great speed…

14th BRICS summit to review current global issues, reach key agreements

  At the   14th BRICS summit   which is to be hosted by China in a virtual mode on 23-24 June, the member nations will review the current gl...