Recent content by paigecoal

Hi, can anyone help me solve the following questions? 1.What was the peak wavelength of the CMB when R=0.5? a. What temperature does this correspond to? 2. Two quarks named Susan and Nick existed in the early universe. Susan became part of a proton and Nick became part of a neutron. What...

Is there anyway we can determine if Betelgeuse has gone supernova earlier this month? (theoretically speaking)