* 1965: Arno Penzias and Robert Wilson discover the cosmic microwave background radiation,
* 1965: Arno Penzias and Robert Wilson discover the cosmic microwave background radiation,
0.049 seconds.
* 1965: Arno Penzias and Robert Wilson discover the cosmic microwave background radiation,
* 1965: Arno Penzias and Robert Wilson discover the cosmic microwave background radiation,
0.049 seconds.