Hacker News
- Why Aren't We Made of Antimatter? https://www.scientificamerican.com/article/why-arent-we-made-of-antimatter/ 5 comments
- How certain are we that distant galaxies aren't made of antimatter? http://arxiv.org/abs/1107.1575 18 comments askscience
- If Matter and Antimatter behave very, very similar, can we be sure that distant galaxies aren't made of antimatter? https://www.reddit.com/r/askscience/comments/6wlzsk/if_matter_and_antimatter_behave_very_very_similar/ 6 comments askscience