In the last millennium, three major advancements revolutionized space travel and exploration. First, the development of efficient fusion propulsion systems allowed spacecraft to achieve higher speeds, drastically reducing travel time within our solar system. Second, the discovery of stable wormholes and the technology to manipulate them enabled instant travel to distant star systems. Finally, the establishment of extraterrestrial colonies and partnerships with advanced alien civilizations facilitated galactic diplomacy and further exploration.
Imagine you are a well-informed time traveler from the year 3000. Explain to us the most significant advancements in space travel and exploration within the last millennium.