article_snippet: An asteroid so large An asteroid has the potential to cause widespread devastation is on An asteroid way towards Earth.
article_snippet: But despite   being called a ‘Potentially Hazardous Asteroid’ (PHA) by Nasa, experts are telling people not to be worried.
article_snippet: An asteroid is estimated to be 1,640ft-wider (500 metres) which would be large enough to cause devastation - but An asteroid will not hit Earth .
article_snippet: And while this event will occur without incident, Experts   added An asteroid is a reminder of how many dangerous space rocks there are in the planet’s vicinity.
article_snippet: An asteroid is estimated to be about 1,640ft (500 metres) wide which, if An asteroid hit Earth, would be large enough to cause widespread devastation - although there is no chance of this happening.
article_snippet: On average, Earth is hit by a football pitch-sized rock every 5,000 years, and a civilisation-ending asteroid every one million years, according to Nasa's Near-Earth Object Program.
article_snippet: Last year experts warned that Nasa must do more to track asteroids, as one could cause widespread damage to the planet. 
article_snippet: In the past year, a host of famous science names have joined forces to warn the world of the threat posed to Earth by asteroids.
article_snippet: It is estimated that of the million or so asteroids that could cause major damage on Earth, we are aware of only about 10,000 - or one per cent.
article_snippet: This means that at any moment an asteroid could enter the atmosphere and cause widespread destruction, without any prior knowledge.
article_snippet: Yesterday Nasa released details of Nasa Asteroid Redirect Mission (illustrated), which will see astronauts study an asteroid in space next decade. 
article_snippet: The more we learn about asteroid impacts, the clearer asteroid becomes that the human race has been living on borrowed time,’ Dr Brian May said in a statement in December.
highlights_snippet: a 'Potentially Hazardous Asteroid' (PHA)
   is estimated to be 1,640 feet-wide (500 metres)
  
highlights_snippet: This would be large enough to cause devastation - but a 'Potentially Hazardous Asteroid' (PHA)
   will not hit Earth .
  
highlights_snippet: In fact a 'Potentially Hazardous Asteroid' (PHA)
   will sail past at distance that is 11.7 times further than the distance between the Earth and the moon .
  
highlights_snippet: Experts  said, however,  Experts   highlights a need to do more to track asteroids .