In the local Universe, this is not a major constraint, as the time delays that light imposes are relatively manageable. The delays even to communicate with New Horizons, at the very outskirts of ...

Who knows. If we come up with a good idea on how to make a jump back to the universe of Observer or The Medium, then why not?Everything’s possible. Related Content – Sony PS5 Complete Guide ...

This empty, expanding universe, called a “de Sitter” space-time, has a horizon, beyond which space expands so quickly that no signal from there will ever reach an observer in the center of the space.

The speed of light, sometimes abbreviated as c, is a universal maximum posted speed that causality will enforce. It's the greatest speed at which any known substance or object can travel. Even light ...

A theoretical astrophysicist uses his protractor to measure the universe. From a sheet of paper to the cosmos. Lots of pictures! This post is from Observer Short List—an email of three favorite ...