Look up into the sky and it's hard to imagine where the Earth's atmosphere ends and outer space begins.
Commonly referred to as the Karman line, that imaginary border is 62 miles (100km) away and on Friday a group of students from across the US and Canada are hoping to send an unmanned rocket through it.
It's the brainchild of 19-year-old rocket-obsessed North Carolina University student Joshua Farahzad, who said he came up with the idea during his "boring" summer vacation last year.
Without the help of a large financial backer, engineering professionals, or teachers, Operation Space began collaborating on the project remotely from their various locations across the US and Canada, using a Slack message channel, video chats and phone calls.
