While Philae's scientific efforts were short-lived, Rosetta collected a wealth of scientific data while orbiting the comet, offering scientists insights into the evolution of the solar system. According to the European Space Agency the Rosetta probe has travelled some 7,971,290,298 kilometers (4,953,359,791 miles) during its lifetime - nearly 21,000 times the distance from the Earth to the moon. One the images taken during its final descent, this high resolution view looks across the comet's stark landscape.
The historic spacecraft has transformed scientists' understanding of comets over the past two years, as it orbited the 67P/Churyumov-Gerasimenko comet and sent a stream of images and data back to Earth.
The ESA said it made a decision to end Rosetta's mission on the surface of 67P because the comet was heading out beyond Jupiter's orbit-farther from the Sun than the probe had ever traveled.
Rosetta was never created to land, but as the comet moved further from the sun, the ESA decided it was the best course of action.
Rosetta probe crashes into its comet
The practical mission may have ended, said Dr Taylor, but the wealth of information provided by Rosetta means "the science will continue". Scientists considered braking Rosetta's descent by firing arresting rockets, but this would have kicked up too much dust, resulting in blurred photos and poor data.
Rosetta's main distinction is that it is the first ever spacecraft to orbit a comet.
The last image Rosetta transmitted to Earth before it touched Comet 67P's surface on September 30, 2016. Friday's landing will be the second for the Rosetta mission. We now know that comets provided essential organic clues about how life began in the solar system, especially on Earth some 4.6 billion years ago. Once it lands on the comet, it will send out a radio signal confirming its fate, which was expected to arrive on Earth about 40 minutes later, or at approximately 7:20am Eastern Time.
"Although we've been flying Rosetta around the comet for two years now, keeping it operating safely for the final weeks of the mission in the unpredictable environment of this comet and so far from the Sun and Earth, will be our biggest challenge yet", said Sylvain Lodiot, ESA's spacecraft operations manager.
Some of the surprises turned up by the Rosetta-Philae combination were that Comet 67P creates a "song" from its oscillating magnetic field and that the comet is highly porous and stuffed with fluffy, lightweight dust and ice - enough so that it would float in water.
Absolutely false, PM says of Nauru torture claims
She eventually set her family's dwelling on fire, and is now confined to a medical ward in a Refugee Processing Center. The treatment of refugees on Nauru is in breach of worldwide law and amounts to torture according to Amnesty global .