Geography, 18.07.2019 16:00 terrancebest

How far into space does a microcalorimeter have to be to observe the perseus cluster?

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Measurements of unprecedented detail returned by Japan's Hitomi satellite have allowed scientists to track the motion of X-ray-emitting gas at the heart of the Perseus cluster of galaxies for the first time. The results showcase the long-awaited premiere of a next-generation X-ray instrument whose key components were developed at NASA's Goddard Space Flight Center in Greenbelt, Maryland.
Led by the Japan Aerospace Exploration Agency (JAXA), Hitomi was launched on Feb. 17. Following the successful activation of the observatory and instruments, Hitomi suffered a mission-ending spacecraft anomaly on March 26.

Before its demise, though, Hitomi was able to peer into the Perseus cluster of galaxies, an assemblage of thousands of galaxies bound together by gravity. Located about 240 million light-years away and named for its host constellation, the Perseus galaxy cluster contains a vast amount of extremely hot gas. At temperatures averaging 90 million degrees Fahrenheit (50 million degrees Celsius), the gas glows brightly in X-rays. Prior to Hitomi's launch, astronomers lacked the capability to measure the detailed dynamics of this gas, particularly its relationship to bubbles of gas expelled by an active supermassive black hole in the cluster's core galaxy, NGC 1275.
For the first time, thanks to Hitomi's revolutionary Soft X-ray Spectrometer (SXS), an instrument developed and built by Goddard scientists working closely with colleagues from several institutions in the United States, Japan, and the Netherlands, astronomers have mapped the motion of X-ray-emitting gas in a cluster of galaxies and shown it moves at cosmically modest speeds.
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q1: what are the problems with international aid?

the independent commission for aid impact warns: “the department for international development's results system is not currently oriented

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in today's world, international aid is fickle, financial flows unstable, and many donor countries are facing domestic economic crises themselves.

q3: what do you think is the best approach to offer international aid?

the left complains that the united states does not provide enough money to developing countries. system of government-to-government aid is the best way forward. we will argue that shifting money from government-to-government aid to tax development scholars believe credit constraints are a key

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Yes that is correct answer in 6

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