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In emergency decision, James Webb telescope will study 'city-killer' asteroid 2024 YR4 before its close approach to Earth
In a rare "time-critical" decision, the James Webb Space Telescope will study the true size of the "potentially hazardous" ...
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World's most powerful space telescope to study asteroid with chance of hitting Earth
NASA and other world-leading space agencies are putting the most powerful eyes in the night sky on asteroid 2024 YR4, a newly discovered threat to Earth.