Daily Archives: August 4, 2013

NASA Survey Counts Potentially Hazardous Asteroids – NASA Jet Propulsion Laboratory

August 4, 2013 – Potential Hazardous Asteroids (PHAs) More Numberous than Previously Thought:┬áPotentially hazardous asteroids, or PHAs, are a subset of the larger group of near-Earth asteroids. Findings indicate there are roughly 4,700 PHAs, plus or minus 1,500, with diameters … Continue reading

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