yes and robert wilson they were creating a radio receiver and were puzzled by the noise it was picking up from all over the sky that's now interpreted as residual radiation from the time when the universe began. to day's background radiation is left over from the big bang see at the beginning the universe was extremely hot the radiation cooled as the universe expanded it can only be measured as firm a radiation which is not visible to. the coffee here in the coffee is hot as is the hot plate it's not we can't see it directly that's the problem it's this is obvious but if i drops of water on a hot plate i could make the heat visible or don't hear. the plank space satellite which was launched in 2009 delivered very accurate data on the cosmic background radiation. that taught us a lot about the early years of the universe and the rate at which it was then expanding. this cosmic background radiation is talking to us from the deepest depths of time. data from planck which seems to operate in 2013 are still being analyzed more findings are said to be published this year and might help resol

robert e. lee, and he is wishy-washy on wilson so that was good but the main headline i saw from yesterday is numbere biden is not going to hold any rallies, he said. number two, he said he hasn't been tested for covid-19. number three, that he's constantly being tested for cognitive decline. and that's the reason you don't put joe biden out there. he admitted he's being constantly tested to see this mental faculties are in decline. that opens up a whole lot of questions. which doctor did the tests? can we see the results? how often have they been? those other things that maybe i would expect someone to ask him a month from now when he does his next postconference. >> katie: i think we need a "watters' world" from the streets of the joe biden press conference the next time the dangerous species emerges from the bunker. is it a strategy, that less is more? it is something that you pay attention to when joe biden comes out in public and holding a so-called press conference and it seems to be working for them to this point. >> dana: yeah. definitely. i think it's been super frustrating. the trump campa