

Number of rocket launches since the start of the space age in 1957:

About 5560 (excluding failures)



Number of satellites these rocket launches have placed into Earth orbit:

About 9600



Number of these still in space:

About 5500



Number of these still functioning:

About 2300



Number of debris objects regularly tracked by Space Surveillance Networks and maintained in their catalogue:

About 22 300



Estimated number of break-ups, explosions, collisions, or anomalous events resulting in fragmentation:

More than 500



Total mass of all space objects in Earth orbit:

More than 8800 tonnes



Number of debris objects estimated by statistical models to be in orbit:

34 000 objects >10 cm

900 000 objects from greater than 1 cm to 10 cm

128 million objects from greater than 1 mm to 1 cm

