Quantum Physics in a Mirror Universe

Solar activity is still increasing in a sunspot cycle that is proving way more intense than scientists predicted. Just how much stronger is it going to get?

So you’ve decided to jump into a black hole. Good news: as long as the black hole is big enough you can sail through the event horizon without harm.

Cern's Large Hadron Collider routinely collides particles at energies equivalent to a fraction of a second after the Big Bang, but a particle with the energy of an LHC collision hits every square kilometer of the Earth every single second. And we only relatively recently figured out where these cosmic rays are coming from.