The visible edge of the universe is, by definition, the most distant thing that we can see. That does not mean it is the most distant thing we can feel, however. According to astrophysicist Alexander Kashlin...
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Cosmologists think that beyond the edge of the observable universe lies… more universe: more stars, more galaxies, more planets, more everything. Because it's unobservable, however, astronomers do not know how large the entire universe is. It's possible that the universe is truly infinite, wi...
Infinite replicas:If the universe is truly infinite, then everything that occurs within our observable universe must recur an infinite number of times beyond our cosmic horizon. The number of possible particle configurations in any finite volume is large but limited. In an infinite expanse, each ...
There’s a limit to what we can see. The “edge” of the visible universe is a “horizon”. There’s probably a lot more of the universe beyond that horizon, but it officially doesn’t matter. The “edge” at the limit of your vision is the horizon. Something moving away from you...
In the chemical reactor there's a vacuum very close to that of interstellar space. And the temperature is minus 200° Celsius.在化学反应堆中有一个非常接近星际空间的真空空间。温度是- 200摄氏度。We made the ice, we can see a bit here, a sort of growth on the edge of the window. The ...
What we can see is a very small part of the whole. This is where we come up against what is so far an impenetrable wall in our knowledge. We have to break through this before we can make any more real progress. Will we ever find life beyond Earth? Credit: Karen Teramura, UH LfA...
which it is beyond our ability to conceive. And if there is conscious life elsewhere in the universe, it is likely that some of it will not be describable even in the most general experiential terms available to us. (The problem is not confined to exotic cases, however, for it exists be...
is known as the closed model, with positive curvature resembling a sphere. A mind-boggling property of this universe is that it is finite, yet it has no bounds. An intergalactic Ferdinand Magellan could circumnavigate it, traversing space forever without hitting a wall or falling over an edge...
Space is the vast, seemingly infinite expanse beyond Earth, while the universe encompasses all of space, matter, and energy, including galaxies, stars, and planets.