“While waiting for the first ESA student CubeSat to be deployed from the International Space Station at the beginning of October, the three Fly Your Satellite! CubeSats candidate for rocket launch are completing their environmental test campaign. During the past few months, the student satellites had to pass a number of tests in order to make sure they would be able to perform properly in the harsh conditions encountered during launch and in orbit. This test campaign represented Phase 2 of the Fly Your Satellite! educational programme. The satellites were tested before, between, and after being exposed to extreme environmental conditions, such as vibrations and temperature cycles in a thermal/vacuum chamber. These tests are necessary to demonstrate that the CubeSats are capable of working in these harsh environments and are not visibly damaged by them. The three CubeSats that underwent the ‘Fly Your Satellite!’ environmental test campaign are presented.”