Sky science
Escape Velocity
Direct answer
Escape Velocity is the minimum ideal speed needed at a position to reach unlimited distance with no further propulsion.
It is the local speed threshold for gravitational escape.
$0 today, then $12/month after 7 days. Cancel anytime.
At a glance
- Found in
- Astronomy & Skywatching
- Related
- Parabolic Orbit, Hyperbolic Orbit, Orbital Resonance, Mean Motion Resonance
It is the local speed threshold for gravitational escape.
A scientific orientation to scale, light, or motion; the article supplies the precise definition.
What does your own chart say about you?
Choose love, work or purpose. Your reading is written from your chart. Your reading uses your own birth details.
Walk through Alex’s whole example first
The Road of AgesSee the turning points of your whole life, from your birth date
See your road's shape
Prefer to explore first?
The Road of AgesThe turning points of your whole life, from your own chart
Walk my road
Free, by email
Your daily Almanac letter
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
The story behind Escape Velocity
Newtonian energy methods turned escape into a calculable speed.
A one-minute story
The Wandering Stars
How the moving planets were watched, named and found, and what a transit is.
Why Escape Velocity matters
Escape Velocity links energy, mass, and distance in orbit and mission planning.
How to read Escape Velocity
Specify the attracting body and ignore atmosphere only when the ideal model permits.
Escape Velocity in practice: an example
Escape velocity from a planet decreases as the starting distance increases.
Where readings of Escape Velocity go wrong
A rocket need not reach escape speed instantly because continued thrust changes the problem.
Sources and editorial method
Research references used for this entry include:
- NASA Science: Orbits and Kepler’s Laws - NASA explanation of orbital ellipses, orbital periods, and Kepler’s laws of planetary motion.
- NASA Science: Solar System Exploration - NASA overview of planets, moons, small bodies, rings, and the structure of the Solar System.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Last updated
- 2026-09-26
Calculate the road out of gravity
A definition tells you what it is; your own birth chart tells you what it means for you. The Oracle casts your real chart and answers for your love, your work, and your year ahead, in conversation. It opens with the 7-day Seeker trial.
Speak with the OracleRelated terms
More in Astronomy & Skywatching
- Inferior Conjunction
- North Celestial Pole
- Planetary Transit
- Resolving Power
- Spiral Galaxy
- White Dwarf
- Astronomical Nutation
- Celestial Meridian
From the reference page to your own chart
Every word here
is in your own chart.
- A personal reading about love, work or purpose, written from your chart
- A practical next step to consider
- It opens with 7 days free, with the AI Oracle and daily guidance
$0 today, then $12/month after 7 days. Cancel anytime.
Common questions
What is Escape Velocity?
Escape Velocity is the minimum ideal speed needed at a position to reach unlimited distance with no further propulsion.
What do people get wrong about Escape Velocity?
A rocket need not reach escape speed instantly because continued thrust changes the problem.
Free, by email
The Almanac, in your inbox at 7
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
