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Obviously good astronavigation is crucial for hyperspace travel so that one don't make an unintended interface with some celestial object.

But what's to prevent a ship in hyperspace from doing a Griff and colliding with another starship whilst coming out of hyperspace?

Another thing: in the GFFA scheme of things, is it possible for starships to collide in hyperspace?

Danny Bhoy wrote:Obviously good astronavigation is crucial for hyperspace travel so that one don't make an unintended interface with some celestial object.

Very much so. By all appearances, gravity is a bitch with hyperspace travel.

But what's to prevent a ship in hyperspace from doing a Griff and colliding with another starship whilst coming out of hyperspace?

Space is a big place and they have FTL sensors and failsafe mechanisms to avoid such a thing, but it still happens sometimes (there is a comic scene where a couple of ISDs crash against the Executor because the navigators fucked up).

Another thing: in the GFFA scheme of things, is it possible for starships to collide in hyperspace?

Almost certainly. But space is a big place and hyperspace is (going by the Saxton (now canon) explanation) normal space seen from a FTL perspective. The odds of an accidental collision are exceedingly small and I don't think that anything sort of an arranged incident would result in hypercollisions. Even then you would need the exact flight path of both starships and very good timing to pull it.

Due to the speed they are traveling, unless it was near dead on from the front, you would only have millionth of an second time frame to hit the ship at the most.

can ship sensors see other ships in parallel or opposide directions?

in hyperspace, that is

I'm not sure, it would appear that you need some sort of tracking device attached to the other ship to follow them, otherwise Obi-wan could not have followed Jango so closely in AotC, jumping into Geonosis seconds after him.

It is logical however to assume there is someway to detect other ships just for collision reasons as its possible that some of the busy hyperspace routes, Corelia to Coruscant for example, would have too many ships in them to avoid impacts.

btw ships can travel at different speeds in hyperspace according to several books, so can a ship overtake and hit another ship in hyperspace if it takes the same entry vector?

in the book "the cristal star" something is mentioned that a ship can see another ship nearby in hyperspace

I remember an incident involving the 5th Fleet during the exercise conducted at the beginning of the BFC where 2 or 3 ships smacked together upon exit from hyperspace..

Are the hyperspace routes stationary?
In space everything is moving, isn't it? So, if one ship starts from Coruscant to Corelia and an other starts back, the entry point of the first ship will not be the same as the exit point of the second. Also, if there are gravity fields in the path, they are also moving, so even the actual paths will be different.

I remember an incident involving the 5th Fleet during the exercise conducted at the beginning of the BFC where 2 or 3 ships smacked together upon exit from hyperspace..

Actually I'm pretty sure it was one ship, and it overshot its reversion zone and flew into a sun, though that could be a different instance. I think the ship was new, so maybe that had something to do with it.

I'm sure that SW ships have FTL sensors, so they can coordinate their readings with a computer which immediately pulls the ship out of hyperspace if any danger is picked up. I'm not sure, but I think that this is how Interdictor cruisers work-they imitate a gravity well, so ships automatically pull out of hyperspace.

In ANH, I'm fairly certain the ISDs chase the Millenium Falcon. Han comes into the room saying, "See? I told you we'd outrun them" after they've made the jump to lightspeed. This indicates sensors capable of working in hyperspace.

In ANH, I'm fairly certain the ISDs chase the Millenium Falcon. Han comes into the room saying, "See? I told you we'd outrun them" after they've made the jump to lightspeed. This indicates sensors capable of working in hyperspace.

doesn't han mean that they have reached hyperspace without being destroyed?

freker wrote:

In ANH, I'm fairly certain the ISDs chase the Millenium Falcon. Han comes into the room saying, "See? I told you we'd outrun them" after they've made the jump to lightspeed. This indicates sensors capable of working in hyperspace.

doesn't han mean that they have reached hyperspace without being destroyed?

Be useless to say that AFTER the event had passed. Somewhat like bragging "Well I made 21!" on your 30th birthday.

freker wrote:

In ANH, I'm fairly certain the ISDs chase the Millenium Falcon. Han comes into the room saying, "See? I told you we'd outrun them" after they've made the jump to lightspeed. This indicates sensors capable of working in hyperspace.

doesn't han mean that they have reached hyperspace without being destroyed?

He certainly wasn't talking about being destroyed, since it's very obvious the ISDs didn't want the Millenium Falcon dead; they were angling to capture it (also, he said "outrun" instead of "survive"). Besides, ISDs are hyperspace capable, so it stands to reason they followed immediately. It's obvious the Millenium Falcon can't outrun the ISDs at subluminal speeds, because in every instance where they could've, ISDs have always outrun the ship. Thus, I conclude that Han is referring to a superluminal chase, which requires superluminal sensors.

freker wrote:

In ANH, I'm fairly certain the ISDs chase the Millenium Falcon. Han comes into the room saying, "See? I told you we'd outrun them" after they've made the jump to lightspeed. This indicates sensors capable of working in hyperspace.

doesn't han mean that they have reached hyperspace without being destroyed?

Han said that shortly before they reached Alderaan, at the end of the journey. That had to be several hours later, at the very least.. Tatooine is an Outer Rim system, whereas Alderaan is one of the Core Worlds.

Obviously he was referring to a hyperspace chase (of some sort).

I expect their initial jump was not towards Alderaan, but was rather a straight long jump towards some other major planet. Once Han outran them, I expect he dropped back out of hyperspace and changed course to be out of sensor range by the time they passed after him, and then jumped to Alderaan.

The problem with a microjump, I think, is that the pursuing ships would quite possibly detect the Millenium Falcon as they approached, or it might not leave sensor range completely before dropping back out to change course.

Surlethe wrote:I expect their initial jump was not towards Alderaan, but was rather a straight long jump towards some other major planet. Once Han outran them, I expect he dropped back out of hyperspace and changed course to be out of sensor range by the time they passed after him, and then jumped to Alderaan.

The problem with a microjump, I think, is that the pursuing ships would quite possibly detect the Millenium Falcon as they approached, or it might not leave sensor range completely before dropping back out to change course.

Why not just change course in hyperspace? The idea that hyperspace travel has to be in a straight line is ridiculous..

Cykeisme wrote:Why not just change course in hyperspace? The idea that hyperspace travel has to be in a straight line is ridiculous..

The reason which leaps to mind is that if you change course in hyperspace, you're still subluminal relative to your pursuers; of course, if you've already outrun them, you should be fine. There are other reasons hyperspace travel is generally straight-line, from a thread a while ago, but I don't remember them, and they're generalities anyway. The movie also supports your objection; if Han had just changed course, they should have been buckled in when he came into the room.

Cykeisme wrote:Why not just change course in hyperspace? The idea that hyperspace travel has to be in a straight line is ridiculous..

Because it would be more convienent to simply drop ou tof hyperspace and then reorient. you're travelling at hundreds of light years per hour. Any kind of swing you do in hyperspace would cover obscene amount of distance.