The Voyage of Vanishing Men

When Braun's big break came, you heard about it from someone else, since Braun was far away, at a planet-base circling a star that was just a number in a catalog. There were no formal goodbyes out there, just technical admonitions. Then a speck diminished into nowhere, with no instruments to track an object accelerating into speeds so many times greater than light that mathematics became weird paradoxes, and nothing existing in normal dimensions even makes sense.