https://marvishuffcosmos.com/Essays on technology, astronomy, and literature by Marvis Huff.https://marvishuffcosmos.com/articles/light-travel-time-cosmic-history/https://marvishuffcosmos.com/articles/light-travel-time-cosmic-history/Why looking at distant stars and galaxies means observing light that began its journey long ago.Fri, 09 Oct 2026 12:00:00 -0500https://marvishuffcosmos.com/articles/reading-exoplanet-atmospheres/https://marvishuffcosmos.com/articles/reading-exoplanet-atmospheres/How transmission spectroscopy helps astronomers investigate the atmospheres of planets orbiting other stars.Fri, 09 Oct 2026 12:00:00 -0500https://marvishuffcosmos.com/articles/speed-of-light-cosmic-speed-limit/https://marvishuffcosmos.com/articles/speed-of-light-cosmic-speed-limit/What the speed of light means, why a light-year measures distance, and how relativity changes journeys near the cosmic speed limit.Thu, 08 Oct 2026 12:00:00 -0500https://marvishuffcosmos.com/articles/ton-618-ultramassive-black-hole/https://marvishuffcosmos.com/articles/ton-618-ultramassive-black-hole/How astronomers infer the extraordinary scale of TON 618, a distant quasar powered by one of the most massive black holes observed.Thu, 08 Oct 2026 12:00:00 -0500https://marvishuffcosmos.com/articles/andromeda-galaxy-nearest-major-neighbor/https://marvishuffcosmos.com/articles/andromeda-galaxy-nearest-major-neighbor/What Andromeda's ancient light reveals—and why its future encounter with the Milky Way is now considered uncertain.Thu, 08 Oct 2026 12:00:00 -0500https://marvishuffcosmos.com/articles/search-for-intelligent-life-technosignatures/https://marvishuffcosmos.com/articles/search-for-intelligent-life-technosignatures/How scientists search for technosignatures while separating intriguing possibilities from confirmed evidence.Thu, 08 Oct 2026 12:00:00 -0500