A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row seat and snapped new images of the comet, known as 3I/ATLAS , on Friday. The photos, released Tuesday by the European Space Agency , show a fuzzy white dot moving against the vast expanse of space. The bright dot is the center of the comet, made up of a solid nucleus of ice, rock and dust. The