NASA OSIRIS-REX spacecraft arrives at an asteroid called the morning Setting on a mission to collect from the surface of the asteroid and return it to Earth.
The craft has been traveling through space for more than two years.
It arrives within 20 kilometers of 500-meter speed (1,640-footpath) near today.
The mission is to learn more about life sources on Earth and possibly elsewhere in the solar system.
The coverage of the event will live all over the world starting 11:45 a.m. ET.