Asteroid expected to pass near earth early on Saturday, says NASA

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However, this time, there is no reason to worry. That means, on February 6, the 2018 CB will come very close to earth at around 2:30 p.m. PST (5:30 p.m. EST). According to the scientists at the Jet Propulsion Laboratory in La Cañada Flintridge, there is absolutely no chance that the asteroid will impact our planet.

The rock was spotted Sunday from an observatory in Tucson, Arizona.

It's between 50 and 130 feet wide, similar in size the one which exploded over Chelyabinsk five years ago. It may well be larger compared to the asteroid which entered Earth's atmosphere over Chelyabinsk in Russian Federation that almost slammed into the ground in 2013.

On Tuesday, 2018 CC was about 114,000 miles away when it flew by Earth.

This GIF from Nasa shows how close the rock's trajectory will get to the earth, relative to the moon's orbit. The asteroid is called 2018 CB.

Another small asteroid passed within lunar distance this week.

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2018 CB will pass within 39,000 miles (63,000 km) of earth, which is less than one-fifth the distance between the earth and the moon.

In the meantime, astronomers are looking out for asteroids in the far cosmic reaches. Many of them have been known about for years or even decades, but more are being discovered all the time. It measures from 0.3 miles to 0.75 miles across.

'Asteroids of this size do not often approach this close to our planet - maybe only once or twice a year'.

Neither asteroid poses a threat to Earth.

NASA tracks hundreds upon hundreds of potentially hazardous objects that routinely cruise past our planet.

Additionally, the space agency has several ongoing missions in space that concern asteroid.