The Vomit Comet
![](https://space.blog.gov.uk/wp-content/uploads/sites/129/2016/04/andrew-part-2c-620x413.jpg)
This week the Open University released the second in a series of excellent primers on microgravity – this time, looking at how the evocatively nicknamed Vomit Comet – AKA parabolic flights – can help scientists understand how planets form.