the mouse that had not exercised couldn't tell the difference between the 2 objects only once bishop berger had replaced the white pyramid with a black one did the unsporting now see the object of something new and begin to investigate it. so it seems that active mice have a more precise memory thanks to the new brain cells formed to to exercise. but there is a catch when it's and on the screen if the cells on tuesday they die off again within a matter of weeks or so it will take both physical and mental exercise to keep mice and people on their toes. if outlet is right why ave latin i've. now it's your part of the show if you have a science question just ask send it to us as a video text or voicemail if we answer it on the show you'll get a little surprise so just ask this time we have a cosmic question sent in by a viewer in ghana. how fast is the universe expanding. in 1929 the american astronomer edwin hubble made a groundbreaking discovery. he could found early observations that the light from distant galaxies is more redshifted light from closer wadhams. that means that distant object