The observable universe refers to the portion of the universe that we can observe from our position on Earth, or through our telescopes and other scientific instruments. This includes everything that can be seen by electromagnetic radiation such as light, radio waves, Xrays, and so on.

On the other hand, the actual universe refers to the entire universe, which includes everything that exists, both seen and unseen. The actual universe is much larger than the observable universe, and it is believed to extend beyond the limit of what we can see, even with our most advanced instruments.

The reason for this is that light travels at a finite speed, and the universe is thought to have a finite age. This means that light emitted from objects located beyond a certain distance from us has not had enough time to reach us yet. This boundary is called the "light horizon" and it marks the limit of the observable universe.

The actual universe may be much larger than the observable universe, and it may contain structures and objects that we can never see or detect. This is because they may be located beyond the light horizon or because they may be made up of particles or other matter that does not interact with light or other forms of radiation that we can detect.

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Observable Universe VS Actual Universe

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