The galaxy is about 100 times wider than it is tall, so if i am bump into someone while we are both crossing a sector, we will likely be on a similar plane, even if we are likely at wildley different “eleveations” . On top of that, being close enough to a ship to make visual contact with a really good telescope (say 20,000km) requires a conscious effort when talking about galactic scales.
The galaxy is about 100 times wider than it is tall, so if i am bump into someone while we are both crossing a sector, we will likely be on a similar plane, even if we are likely at wildley different “eleveations” . On top of that, being close enough to a ship to make visual contact with a really good telescope (say 20,000km) requires a conscious effort when talking about galactic scales.