A small asteroid shoots at Earth at 14.9 kilometers per hour and NASA admits it doesn't know it's coming. The space rock, known as MO MO, was only three meters wide and exploded when it hit the planet's atmosphere on July 22 over the Caribbean, but the way it approached unexpectedly confirmed the need for more eyes in the sky. NASA said: "When first spotted, in 2019, the MO was approximately 310,000 miles (500,000 kilometers) from Earth – farther from the orbit of our moon.
"This was roughly the equivalent of noticing something about the size of a 310-kilometer (500-kilometer) hen. "
David Farnokia, a scientist at NASA's Near Earth Research Center (NEO), said," Asteroids of this size are much smaller than what we are tasked to track.
"They are so small that they would not survive passing through our atmosphere to cause damage to the earth's surface. "
The problem was, NASA said, the space agency could not determine where the space rock was heading.
NASA says," The body was only seen four times in just under half an hour, which is not enough information to
Just last month, the European Space Agency (ESA) said it also recently missed the NEO, calling for a better asteroid clock.
On July 25, a huge asteroid the size of a football field spread across the Earth and scientists did not know it was coming.
The asteroid in question is known as "201
READ MORE: Meteor videos: Dashcam fireball footage shows space rock over Alberta  However, the European Space Agency (ESA) has confirmed that scientists have only noticed that it is traveling close to Earth " just days "before turning a distance of 65,000 kilometers – one fifth of the distance to the moon.
ESA states: "A 100m wide asteroid called '2019 OK' was discovered just days before crossing the Earth, although archival records from celestial studies indicate that it was previously observed but not recognized as asteroid near Earth.
"We know about thousands of asteroids and track them in the S solar system, so why was this discovered so late?
"Unfortunately, at present there is no obvious cause other than its slow motion in the sky before a near approach.
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Asteroid danger: '100% probability of impact' warns space expert  '2019 OK also travels in a highly elliptical orbit, taking it from orbit of Venus far beyond that of Mars.
"This means that the time spent near the Earth and detectable with the current capabilities of the telescope is relatively short.
"ESA, NASA and other agencies and organizations around the world – professional and amateur – are discovering new asteroids every day.
"This work is constantly increasing our understanding of the number, propagation and motion of rock body orbits. “