[gliboc]

This does not deserve a sensationalist depiction. Everyone in space industry, astronomy and even the public now thanks to this terrible movie Gravity knows about the Kessler effect.

Some thoughts:

- Putting 12000 big freezers (900 pounds at most) in orbit is never going to "crowd" the place; imagine these objects on Earth, then the claim that on a much higher radius sphere these could be seen at any point seems ridiculous. (I am not speaking about speed or dangerosity, which even up the numbers a bit, or powerful light-emitting projects)

- In that sense, the video displayed is annoyingly misleading.

- The danger of the Kessler effect is a long term one, and as such it seems purely economic to me. Increasing the number of space debris will gradually increase the probability of collisions, and raise the costs of space industry, in an upwards trend that may at some point represent a real financial burden. This is the only question: at which point does it become economically interesting to tackle this problem, and are we not underestimating the future costs at this point ?

- My take is not yet, and SpaceX will do fine managing their 12000 space fridges.

https://www.theguardian.com/science/blog/2013/nov/15/space-j...