Did Our Universe’s Structure Grow From The Top-Down Or From The Bottom-Up?

Click Here to Read:  Did Our Universe’s Structure Grow From The Top-Down Or From The Bottom-Up? by Ethan Siegel on the Forbes Magazine website on October 9, 2019.

The history of the expanding Universe can be traced back 13.8 billion years, to the very beginning of the hot Big Bang. A matter-filled Universe with initial imperfections underwent gravitational growth over a long period of time, resulting in the intricate cosmic web we see today. In the upper-left corner, a pie chart detais the fractional energy density of the Universe today.

ESA AND THE PLANCK COLLABORATION (MAIN), WITH MODIFICATIONS BY E. SIEGEL; NASA / WIKIMEDIA COMMONS USER 老陳 (INSET)