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Mola, thank you. we do have new reporting here tonight on what the u.s. navy has now found, parts of that chinese spy balloon off the east coast. and now the pentagon is revealing how it tracked it across the country. a u.s. navy team recovering pieces of the balloo off the coast of myrtle beach, south carolina. we have learned tonight an unmanned underwater vehicle is now examining the wreckage for explosives. u.s. authorities suspect there could have been explosives as a way for the balloon to self-destruct. here's our chief global affairs correspondent martha raddatz again tonight. >> rep...

>> reporter: yeah, so i'm curious about something. i assume that your dog is excited about the spacex mission as well. but i'm curious about something as well because the inspiration 4 crew only did about five months of training. you guys trained for years for some of this stuff. some of the equipment that they had onboard, they just came up with the idea for earlier this year. and it was already flight-ready on this mission. did that give you any sort of concern at all about this mission? >> no, you're right. my space station mission we trained for 3 1/2 years, they in depth, very hands on. w...

It. they need space suits to survive with a backpack containing the oxygen they need to breathe constantly. without it they would die. besides humans can't stand the zero pressure of space their bodily fluids would boil so they need pressure suits but one bar of pressure like on earth would be too much. it would look like this the pressure difference between inside and outside would blow the suit up like a balloon the astronauts wouldn't be able to move. so a spacesuit has only zero point three bars of pressure for humans a tiny amount on earth that would be the pressure at nine thousand meter...

japan, one arresuspected of mur >> reporter: we are learning more about the case. tokyo police were holding him on different charges but now holding him on murder charges, looking to advance their case against this unidentified man, unidentified because he's still considered a minor under japanese law. for the minor of fur dg long, an irish exchange student found dead in a tokyo hotel room, strangled to death. the tokyo police say the only other person in the room was the 19-year-old. they are moving forward on a case against another american, blackston, an l.a. native. we spoke to h...

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