4 ms·

I think a theory winning when it comes to “end of the universe - scary version” is what is known as vacuum decay : https://bigthink.com/hard-science/vacuum-deca

• Zigurd 5y ago
  Is it not a bit odd to consider things that will happen long after the sun is a cinder "scary." There are enough genuinely scary things that could flash-sterilize the planet, or smash a big enough hole in it to end all complex life forms. Nearer-term scary things are likely to come from how poorly humans can adapt to long term life in space or on planets with different gravity. Time stretches beyond the ability of life to survive in both directions. Nobody will be around to be scared.
  • prox 5y ago
    I agree my comment is way too antropomorphic centric. As you say, in terms of the timescales involved it might not be a time humans are around.
• thehappypm 5y ago
  At the speed of light we’d all be gone. Even if the Mars colony was snuffed out first, we wouldn’t even know, since the information about the change wouldn’t be able to reach us before the decay did!