The following is an excerpt from the monthly Launchpad newsletter, where resident space expert Leah Crane travels through the solar system and beyond. You can sign up for Launchpad for free here.
Let's get started. For about 100 million years after the Big Bang, solid matter and dust did not exist. At first there was only boiling hot plasma, then when it cooled there was only hot gas. The universe continued to expand…
Source: www.newscientist.com