In 2014, astronomers mapped the motions of thousands of galaxies and outlined our supercluster: Laniakea, Hawaiian for 'immense heaven'. It spans about 500 million light-years and holds some 100,000 galaxies, with the Milky Way out on the edge. All of them are slowly flowing toward one region, nicknamed the Great Attractor.
A large share of Earth's water molecules formed in the interstellar cloud that existed before the Sun was even born, more than 4.6 billion years ago. You are literally drinking a cosmic fossil.
By day, the Martian sky looks butterscotch because of fine dust hanging in the air. But at dusk, those same grains scatter blue light forward, creating a bluish glow around the Sun. Rovers have photographed these blue sunsets: the exact reverse of what we see on Earth.