EXCLUSIVE: NASA is closely monitoring the arrival of a previously unseen asteroid that is set to brush past Earth today at 21,362 miles per hour.
Now called asteroid2017 YZ4, it will come past us between the Earth and the Moon at a distance of just 139,433 miles.
The Moon is 238,000 miles from Earth, and this pass is considered a cat’s whisker in astronomical terms.
NASA considers and monitors anything which comes within six million miles of our planet as a near earth asteroid.
NASA spokesman