How can we see farther than the Universe's age times the speed of light? Because space kept stretching while the light was travelling. The objects whose oldest light reaches us are now about 46 billion light-years away. So the observable Universe is a sphere roughly 93 billion light-years across.
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.