White hole - Wikipedia
In general relativity, a white hole is a hypothetical region of spacetime and singularity that cannot be entered from the outside, although energy - matter, light and information can escape from it. In this sense, it is the reverse of a black hole, from which …
White holes: What we know about black holes' neglected twins - Space.com
2023年7月11日 · White holes are theoretical cosmic regions that are opposite to black holes. Just as nothing can escape a black hole, nothing can enter a white hole.
What Is a White Hole? Does the Cosmic Phenomenon Exist?
2024年5月7日 · In astrophysics, a white hole represents a theoretical phenomenon where matter and light would emerge from, rather than be pulled into, a certain area in space. It's the exact opposite of a black hole.
Could white holes actually exist? | Space
2023年8月13日 · Black holes seem to get all the attention. But what about their mirror twins, white holes? Do they exist? And, if so, where are they?
What is a white hole? - BBC Science Focus Magazine
What is a white hole? A white hole is a bizarre cosmic object which is intensely bright, and from which matter gushes rather than disappears. In other words, it’s the exact opposite of a black …
Do white holes exist? Have we seen one? - EarthSky
2011年5月27日 · White holes are the theoretical opposite of black holes. As black holes draw in surrounding stars, dust, passing spaceships – whatever comes too near – so white holes, by definition,...
What are white holes, and do they really exist? - Big Think
2023年2月3日 · Could white holes, the time-reversed equivalent of a black hole, be just as real? And what would that mean for our Universe if so?
What Is A White Hole? - Science ABC
2023年10月19日 · White holes are theoretical cosmic phenomena that function in the opposite way as black holes; instead of attracting matter into an infinitely dense singularity due to immense gravity, it pushes out matter and light, preventing anything from re-entering past its event horizon.
What Is a White Hole, and Do White Holes Really Exist? - Popular Mechanics
2023年11月6日 · White holes are the opposite of black holes in almost every way. General relativity predicts their existence, but why haven’t astronomers found any yet?
What Is a White Hole? What You Need to Know About the Black Hole…
2023年12月28日 · What Is a White Hole? White holes are hypothetical cosmic areas that operate differently from black holes. Nothing can enter a white hole, just as nothing can escape a black hole.