From what I understand so far, when one of virtual particles crosses the event horizon and the other does not, they can not annihilate each other. The latter wanders off into the universe (btw, is it

Do meteors always streak in the same direction? While I know it's not likely to be exactly the same direction, but generally speaking. Would one say meteors always travel, for example, east to west?

With every improvement of measurement we are able to determine the age of the Universe more exactly. I just wondered how much and what means it would need to narrow the range of age so that it woul…

In the book "Horizons_ exploring the universe-Cengage learning (2018)", p196, it states that The nuclear reactions in a main-sequence star’s core fuse hydrogen to produce helium. Because…

If the universe has formed & originated by a Big Bang Explosion, then there must be empty space left in the center of the explosion site, as all the matter is travelling at tremendous speeds away

Ako iskonska crna rupa danas postoji, može li biti odgovorna za galaksije, možda i kvazare, mislim da ta drevna čudovišta za sobom proždiru sve materijale i rastu sve veća i na kraju ...