Nasa's probes have seen the 'edge' of our solar system for the first time - and it's completely different from what scientists thought.
Our solar system is flying through space more slowly than we thought - and Nasa's IBEX - Interstellar Boundary Explorer - has found it doesn't have a 'bow shock', an area of gas or plasma that shields our solar system as it hurtles though space
‘The sonic boom made by a jet breaking the sound barrier is an earthly example of a bow shock,’ says Dr. David McComas, principal investigator of the IBEX mission .... http://www.dailymail.co.uk
