The comet chaser was never created to land, but in the course of its mission scientists decided they would make the last bold move in an attempt to gather one final set of information from the comet.
The trailblazing craft's final manoeuvre was executed at a distance of 720 million km from Earth, with the comet zipping through space at a speed of more than 14km per second.
The 12-year mission is the first-ever successful rendezvous between a man-made object and a speeding comet. In this orientation the Babi and Aker regions are visible on the large lobe to the left, while Ma'at and the circular Hatmehit depression are seen on the small lobe to the right.
Rosetta arrived in August 2014 - at 67P/Churyumov-Gerasimenko - to give its complete name to the comet, after a 10-year journey from Earth. When Rosetta touched down on the comet it had been observing for the past two years, it shut off permanently, moments after beaming back close-up images of its surface. The walls of these pits also have "goose bumps" that scientists said they wanted to study in greater detail, because these lumps could represent the comet's internal building blocks.
Launched in 2004, Rosetta continued its mission to beam back images and data of the comet across the solar system until the very last seconds.
All contact with Philae was lost in July after the space agency switched off Rosetta's radio link with the lander.
Despite travelling at just 1.1mph - walking pace - Rosetta is not designed for landing, so various components will nearly certainly be crushed as it dumps down.
Scientists made a decision to crash the craft because the comet is now getting so far away from the Sun that the solar panels won't be able to generate enough power to keep it functioning. But in Rosetta's final hours, it might provide some of its most important information yet - snapping pictures and hoovering up data as it makes its way to the comet's surface.
It achieved a major feat in November 2014 when its robot Philae landed on Comet 67P to gather information.
Rosetta's flight director Andrea Accomazzo, who compared it to the moon landing in significance, said, "We're now entering the final stage of the space segment of the mission, if you like". Comets such as 67P are thought to contain some of the same materials that were present in the solar system when the first planets formed. We have only just started.