When the light we see from the star Earendel was emitted, the universe was less than a billion years old. But, during the almost 13 billion years it took the light to reach us, the universe has expanded so that it is now a staggering 28 billion light-years away!
Astrobiology
Astrobiology 101: Life, the Universe, and How We Search for Our Cosmic Neighbours
Look up at the night sky and it is difficult not to wonder: are we alone? Astrobiology turns that ancient
Astrobiology Society
June 7, 2026
