Boötes Void: A colossal cosmic blank that could have hidden the universe

Boötes Void is a 330‑million‑light‑year‑wide cosmic void with far fewer galaxies than expected. First identified in 1981 via redshift surveys by Kirshner and colleagues, it sits inside the foam‑like large‑scale structure of the universe and underlines how our location shapes what we can observe: inside this void the Milky Way would likely have seen no other galaxies for decades, potentially until the 1960s were it at its center, with only about sixty galaxies found there compared with thousands in a typical patch.