Giant radio telescopes have helped scientists look into an asteroid as it passed by earth last month. A video captured by the telescopes show 1999 JD6 whizzing by earth. Elongated shape and twin lobes earned the name of 'space peanut' for the space rock.

Asteroid expert Dr. Amy Mainzer, principal investigator for NASA's NEOWISE space telescope program, said a couple of big chunks appear to have come together at some point. She said the asteroid is 1.2 miles across at its widest point. One of the possibilities behind its existence is it could be a remaining piece after a large asteroid got a big hit from something in space.

"Radar imaging has shown that about 15 percent of near-Earth asteroids larger than 600 feet [about 180 meters], including 1999 JD6, have this sort of lobed, peanut shape", said Dr. Lance Benner of NASA's Jet Propulsion Laboratory in Pasadena, Calif. and leader of the space agency's asteroid radar research program.

It was July 25 when 1999 JD6 came closest to earth, flying at distance of about 3.5 million miles from our planet. The video was created after compiling images captured over an eight-hour period.

Researchers say no immediate danger is posed by 1999 JD6 to earth, however, it reminds us that a dangerous asteroid might be waiting in wings to collide earth sometime in future. Earth has witnessed it many times before, and nobody can deny the possibility of it happening once again.

Researchers are planning to detect potentially dangerous asteroid and eliminate them.