apophis 99942

In Depth Apophis – NASA Solar System Exploration. Asteroid 99942 Apophis is a near-Earth object(NEO) estimated to be about 1,100 feet (340 meters) across. When it was discovered in 2004, Apophis was identified as one of the most hazardous asteroids that could impact Earth. But that impact assessment changed after astronomers tracked Apophis and its orbit b… See more

In Depth Apophis – NASA Solar System Exploration
In Depth Apophis – NASA Solar System Exploration from 3.bp.blogspot.com

99942 Apophis is a near-Earth asteroid and potentially hazardous asteroid with a diameter of 370 metres (1,210 feet) that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April 13, 2029. Additional observations provided improved predictions that eliminated the possibility of an impact on Earth in 2029. Until 2…

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