A massive 1-kilometre big asteroid will pass by earth on 19th of April and this is the closest any asteroid has ever come in the last 400 years. 

This huge asteroid is hurtling towards earth prompting astronomers to label it “potentially hazardous”. But there's nothing to worry about as this element will just pass by and won't cause any harm.

According to NASA, the giant space rock, ‘2014 JO25’ will be at its closest on April 19. No other projected future encounters will be as close for at least another 480 years.

"The next known flyby by an object with a comparable or larger diameter will occur when 800-meter-diameter asteroid ‘1999 AN10’ approaches within one lunar distance in August 2027," NASA said.

An asteroid this big in size won't have an as close encounter with earth's vicinity for more than 10 years. 

This particular asteroid was discovered by Mt. Lemmon Survey in May 2014 and was labelled as a bright object. Astronomers believed that this will be one of the best targets for the given year to study radar observations. 

The given asteroid will pass by earth at a safe distance of 1.8 million km (4.57 lunar distances). The other two asteroid 2003 BD44’ and ‘1999 CU3’, which are nearly 2-km wide, will also pass by earth pretty soon, but they won't be as close as this one. 

Source http://www.indiatimes.com

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