Video: Mission control celebrates separation but anxiety builds over landing

The interstellar comet 2I/Borisov may be the most pristine ever observed, astronomers say, an untarnished remnant of another star’s nursery.

The latest batch of images released from the European Space agency’s Rosetta mission shows the brutal gray landscape of comet 67P/Churyumov-Gerasimenko in vivid detail.

Research teams across Europe spent the last half-year meticulously going through a wish list of experiments for the Philae comet lander without knowing whether they would ever get a chance to execute the tasks.