A meteor ten times stronger than the Hiroshima bomb exploded above Earth a year ago.
It said the massive fireball was the second largest blast of its kind for 30 years, and yet it went mostly undetected.
NASA said that though the meteor didn't reach the ground, the explosion was estimated to be more powerful than the atomic bomb that detonated over the city of Hiroshima on August 6, 1945 during World War II.
This fireball explosion wasn't a small incident though: Lindley Johnson, NASA's planetary defense officer, told BBC News that a, "fireball this big is only expected about two or three times every 100 years".
The object, which would have been several metres in diameter, hit the atmosphere at about 32kms (over 71,000 mph), and exploded around 25.6km (16 miles) above the Earth's surface.
The explosion went largely undetected by the public or press while scientists collected data because of the remote location, said Kelly Fast, manager of NASA's near-Earth objects observations program, BBC News reported.
An asteroid expert at NASA said that the latest meteor only had 40 per cent of the energy release as that of Chelyabinsk and it exploded over the Bering Sea, which is why it didn't cause a lot of buzz.
Dr Fast was discussing the event here at the 50th Lunar and Planetary Science Conference in The Woodlands, near Houston, Texas.
"That's another thing we have in our defence, there's plenty of water on the planet".
Military surveillance satellites picked up on the blast as it happened, and NASA was notified of the event by the US Air Force.
Meteors such as this are known as "problems without passports" because they have the potential to impact whole regions if they collide with Earth.
Once an incoming object is identified, Nasa has had some notable success at calculating where on Earth the impact will occur, based on a precise determination of its orbit.