Every galaxy needs many drains to keep the machine running properly. Don’t get hung up on what happens to the information that is contained in the mass that gets sucked into the black hole. Exploded megastars run the show. Alien planets may look nothing like...
1st: What is beyond the beyond? One light-year is about 6 trillion miles. Light travels at a speed of 186,000 miles per second. Our sun is the closest star to us. It is a trip of 93 million miles. Andromeda, the nearest galaxy to our Milky Way, is 2.5 million...
The dark side, keeping things together, tearing things apart. Space is three dimensions; adding time, you are wandering around in four sizes. As Earth rotates on its axis, it orbits the sun, which orbits the center of the Milky Way, which itself is speeding through...
The Milky Way: Out of an estimated 100 billion stars in our galaxy, no more than 14 may be made from antimatter. Antistars, which are identical to regular stars, save because they would burn antimatter at their cores. Antimatter is precisely like ordinary matter,...
The anthropic principle says that we, observers, exist. We exist in this Universe, and therefore the Universe exists in a way that allows observers to come into existence. It is the initial condition of the universe that needs to be fine-tuned, not the value today....
