7th edition , and it is free!Misinterpretation of Hubble's observation (of distant stars looking red) led to Universe expansion and Bing Bang speculations. Actual reason for his observation is time in the past was say, 10 billion years ago you started sending letters to yourself, one letter a day.10 billion years have passed, and now, for some reason, our day is twice shorter/faster than it used to be, and letters start coming.How many letters you'll be receiving a day? 1 letter every OTHER day.Frequency of getting letters a day as-if dropped twice. And if 14B years ago time was twice slower than today, then of 100 light-waves sent a second, you'll be receiving 50 waves a second now. Frequency drop = wavelength increase = redshift.Cosmology collapsed on twice slower time 14B years ago (wavelength change was incorrectly explained as space/wave expansion - Doppler effect).Second chapter solves Vera Rubin's puzzle about Milky Way and spiral galaxies - something extra speeds them up, but holds together. Solution is in time dilation - time in spiral arms runs faster and holds galaxy together.Fifth chapter is about time dilation spawning "Vacuum" is "unstable" - "virtual" particle-antiparticle pairs appear, but next moment they disappear - annihilate.But uneven flow of time in an area throws this balance off - some pairs miss rendezvous - miss coming back together into "vacuum". And this chapter points at antimatter asylum.For more problems and solution read the book ...