julesstoop wrote:Even if Deneb were to have captured an entire planetary system - around a G- or M-class star without disturbing it too much gravitationally, the rather large amount of UV-radiation and the - undoubtedly - fierce weather (stellar wind) from Deneb would probably have a noticible influence on life on a planet in the captured sstem.
You mean like it would blow the planet's atmosphere away, or just cause really nasty superstorms?