5 trends tracked about this subject — the full history, oldest to newest below.
A nonprofit organization plans to launch a probe to Alpha Centauri by 2029, embarking on a voyage estimated to last 80,000 years to search for extraterrestrial life.
3 news sources are covering this Science story right now — PULSE is tracking how fast it spreads.
A private group is planning the Fermi Explorer mission, a low-cost attempt to reach the Alpha Centauri star system.
Recent discoveries of super-Earth exoplanets and advancements in propulsion are fueling claims that interstellar travel may soon be feasible.
Scientific analysis examines the physical and theoretical barriers preventing alien civilizations from visiting Earth despite the possibility of their existence.