Frequently Asked Questions
- Why do satellites fall from orbit?
- Why does space hardware come apart during reentry?
- Are there examples of objects that have survived reentry?
- How much material from a satellite will survive reentry?
- What is a "debris footprint?"
- Can we predict where debris will land?
- Can we control where debris will land?
- Has anyone been hit by falling debris?
- How fast will debris be moving when it lands?
- What is the overall risk from reentry debris?
- Why do reentering bodies experience extreme heating?
Spacecraft Reentry FAQ:
How much material from a satellite will survive reentry?
Generally, about 10-40 percent of a satellite's mass will survive reentry. The actual percentage for a specific object depends on the materials used in the object's construction and on shape, size, and weight of the reentering object. For example, if the object consists of empty fuel tanks made of stainless steel or titanium, both with high melting temperatures, much of this material will survive. If much of the structure is made of aluminum with a low melting temperature, a smaller percentage will survive.
Further questions? Contact us at cords@aero.org .
