The European Space Agency (ESA) has christened it a "Christmas asteroid" but its real name is 2015 RN35 and it's a Pyramid of Giza-sized space rock about to hurtle past Earth.
The agency says it will pass by the planet at a safe distance — just close enough for Earthlings to get a glimpse.
Because it's coming so close to our home, 2015 RN35 is considered a Near-Earth Object (NEO) or a space object with the potential to hit Earth.
