francisco diego's a senior research fellow at the department of physics and astronomy at the university college of london and joins me now in the city of this seven year mission is that supposed to unlock some of science's biggest mysteries what would you say is the most important of those and why. well it's difficult to say which one is the most important they're all very important but one of them is as we just saw is the mechanism by which the solar corona gets very hot to millions of the grease where the surface is only six thousand the grease so this is a. way of process that involves magnetic fields and the spacecraft is going to examine these magnetic fields almost at the very source of this is why these space one has to penetrate the solar corona so much in the closer to the sun in this a major major challenge in a in a pack in practical terms why why is that relevant it is relevant because we need to understand the atmosphere of the sun in fact the air of the inner part of the solar system is in medicine to sort of corner the solar coronas what we see in a solar eclipse like thi

of more than a thousand degrees and speeds of seven hundred thousand kilometers an hour mission will last seven years let's talk to francisco jeggo he is a senior research fellow at the department of physics and astronomy university college london he joins us now from london francisco great to have you back on the program look it's a risky project this isn't it costing millions and millions of dollars so what are the chances of success here. very high i think the launch was immaculate the solar rays deployed so the spacecraft is working properly with the sun energy so we expect that they will not be any problems until it reaches his final destination and that's where the potential risks may appear more more dramatically but we will see. the spacecraft he's now yes sorry no not the one francisco you tell us about when a spacecraft is. yeah the spacecraft is going to actually slow down and remember we are the speed of the order because the earth and we have to go inside we have to get three the fall that speed actually which is quite a lot and that's one of the recent to use a very powerful rocket so the spacecraft is going to go towards the sun is going to go behind this one of the end of september and