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One Japanese startup is hoping to deliver shooting stars on demand and choreograph the cosmos. And scientists say it's not just about painting huge pictures on the night-sky that would be visible to millions of people; artificial meteors could help us to understand a lot more about Earth's atmosphere.Although it sounds fast, that is considerably slower than naturally occurring meteors – chunks of material that either broke away from a planet or never managed to form one in the first place – which can hurtle through the atmosphere at up to 80 kilometers a second.Beautiful it might be, but it won't come cheap; each shooting star would cost around a million yen ($8,100), as the company tries to make back more than 1 billion yen price tag for the development and launch of the micro satellite.Close analysis of the light and the trail would reveal the temperatures and densities of the atmosphere and its movements, and could give clues on how the environment will change over the medium and longer term, Sahara said.Comparisons with artificial meteors could also shed light on what natural shooting stars are made of, he said.
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