Gravity assist

just have a while questions:

Is it only used to speed up or slow down spacecrafts?

What are some other benefits except that it saves fuel in spacecrafts?


Mmmglavin! (Frink Noise)
I think it only speeds up, but I bet it could also slow down. It cuts travel time a lot too.

The Physics Forums Way

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving