The universe can be defined as the combination of everything that is in existence, encompassing all physical matter and energy that occupy both space and time, as well as space and time within itself. It also consists of the physical laws that govern all of the above. Many ways in which we define the term universe date back to Aristotle, who classified and defined the elements that make up what we consider the universe as a whole, which are matter, form and change.
Of all the different celestial objects in the universe, black holes are probably the most frightening and awe inspiring. They are gigantic spots in the universe where mass has collected and gravity has overcome all other forces. The reason why black holes appear black is because not even light can escape the massive pull of gravity.
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If you’ve ever thought about opening a bar, maybe you should think about setting up in Sagittarius B. This molecular gas cloud is about 26,000 light years away from Earth, but it contains enough alcohol to party until the end of time! Okay, so it’s not drinkable, but the cloud does contain an octillion liters of vinyl alcohol.