Earth is surrounded by some celestial neighbours in the soar system and then there are the nasty ones that come calling, threatening to destroy everything in their paths!
These are known as Near-Earth Objects (NEOs), including comets and asteroids that travel close to the Earth. Any asteroid or comet that approaches our planet less than 1.3 times the distance from Earth to the Sun can be considered a NEO.
However, the relieving fact is that most NEOs pose no peril at all. It is just a small percentage of Potentially Hazardous Asteroids which can put all life on Earth at risk.But which are these nasty asteroids that hurtle towards the Earth with the potential of causing a global Armageddon?
NASA defined these asteroids as the rocky fragments left over from the formation of the solar system about 4.6 billion years ago.Read more on tech.hindustantimes.com