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...2011 to include a consideration of whether contact was achieved through an interstellar message or a physical extraterrestrial artifact, including all indications {{Interstellar messages}} ...

...ical object]]s. Alternatively, directed panspermia may aim at star-forming interstellar clouds such as [[Rho Ophiuchi cloud complex]] (427&nbsp;ly), that contains ...does not require high precision targeting, especially when aiming at large interstellar clouds.<ref name = "SeedingBook" /> ...

...ole, creating visible jets when these streams interact with matter such as interstellar gas or when they happen to be aimed directly at Earth). Furthermore, a dist ...they are not entered inside the apparent horizon, and they could exchange messages. Increasing [[tidal force]]s are also locally noticeable effects, as a func ...