Escape Velocity Calculator
Escape velocity is the minimum speed needed for an object to break free from a celestial body's gravitational pull without further propulsion. For Earth: v_e = √(2GM/R) ≈ 11.2 km/s (40,300 km/h).
- 1Escape velocity: v_e = √(2 × G × M / R)
- 2G = 6.674 × 10⁻¹¹ N·m²/kg² (gravitational constant)
- 3M = mass of body · R = radius of body (or distance from centre)
Earth: M=5.97×10²⁴ kg · R=6.37×10⁶ m=11.2 km/s escape velocityAbout 40,000 km/h
| Body | Escape velocity |
|---|---|
| Moon | 2.38 km/s |
| Mars | 5.03 km/s |
| Earth | 11.19 km/s |
| Saturn | 35.5 km/s |
| Jupiter | 59.5 km/s |
| Sun | 617.5 km/s |
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Fun Fact
A black hole is an object whose escape velocity exceeds the speed of light (300,000 km/s). Even light cannot escape, which is why they appear black.
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