NASA warns of 4,700 potentially hazardous asteroids (PHAs) in Earth’s solar system that could cause serious damage if they collide with the planet. Only 20-30% of PHAs have been located. No one has been killed by an impact event, but PHAs could jeopardize space missions.
According to the US National Aeronautics and Space Administration (NASA), there are approximately 4,700 potentially hazardous asteroids (PHAs) in Earth’s solar system. These relatively large asteroids, also known as minor planets, could be orbiting close to Earth and, in the event of a collision, could cause serious damage to the planet and its inhabitants. Although space scientists continue to search for potentially dangerous objects, including asteroids, as of 2012, according to NASA, only 20-30% of PHAs had actually been located.
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There is no record of a person actually being killed by an “impact event,” which is the term used in the scientific community to describe a collision between space bodies.
Potentially dangerous asteroids not only pose a risk to the planet, they could also jeopardize space missions.
The first recorded accident of a space object hitting a human was in 1927. A 5-year-old Japanese girl was hit on the head by a small stone, although she was not injured.
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