In 2024, astronomers discovered Porphyrion, a pair of jets launched by a supermassive black hole and stretching about 23 million light-years, roughly 140 Milky Ways laid end to end. The jets date from a time when the Universe was less than half its current age. They may have shaped galaxy formation across enormous distances.
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.