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State of the Planet

State of the Planet

Science

Science

Rocket Launches Are Proliferating. What Is This Doing to the Atmosphere?

State of the Planet
Summary
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82% Informative

Since 2017 , both the number of launches and the size of their cargo loads have grown dramatically, with ever bigger rockets carrying ever larger numbers of satellites and other objects per launch.

There are now about 10,000 satellites in low- Earth orbit, and thousands more that have stopped working.

As launches increase, so will re-entries of failed or decommissioned spacecraft.

Kostas Tsigaridis is an atmospheric scientist at the Columbia Climate School’s Center for Climate Systems Research and its affiliated NASA Goddard Institute for Space Studies .

The heating of the stratosphere from black carbon heats up the tropopause, allowing water to “leak” into stratosphere.

This alters the chemistry and destroys stratospheric ozone.

The erosion of ozone appears to not be a large effect on the global scale, but ongoing analysis implies enhanced polar ozone destruction will happen.