gravity assist
/ˈɡɹævɪti əˈsɪst/
Word Rarity
Uncommon
Frequency: Zipf frequency 4.00 in modern English
20
Scrabble Score
13
Letters
4
Syllables
8
Unique Chars
Meaning
noun
The favorable alteration of the speed and trajectory of a spacecraft as a result of its passing near to a celestial body.
Example Sentences
- "After going into orbit around Jupiter with a gravity assist from the volcanic moon Io, Galileo will spend 22 months studying the planet."
- "Cassini is supposed to swing by Earth in 1999 for a gravity assist that would sling it out toward Saturn."
- "MESSENGER successfully flew by Mercury yesterday, gaining a critical gravity assist that will enable it to enter orbit about Mercury in 2011."