Looking at the ample space the universe has to offer, people can be torn between believing there must be other beings existing with them or nothing at all – either of which is equally terrifying to consider.

It can be bold to assume that humanity is the only creature worthy of special attention within the Milky Way. With the possibility of the extraterrestrial, humans can be as uninteresting as how people perceive bees. After all, when walking down the sidewalk, they rarely, if ever, examine every ant along the way.

Since the dice of life were rolled in millions of other locations within the universe under the same conditions as those on Earth, life as we know it is likely familiar. If true, some intelligent species may be ahead of us by millions of years in technological development.

Say, there are one or more star-faring alien civilizations in the Milky Way. Can they visit Earth? Or, will their expedition be similar to how humans have attempted to travel beyond the Earth’s bounds? If they succeed in landing on Earth, what will they be like?

There are countless possibilities and curiosities surrounding the extraterrestrial – none of which humans are close to answering. Literary materials and the mainstream media may have creatively depicted how aliens are, molding the public’s perception of them. But all these are simply depictions, a product of human imagination, and won’t pass rational scrutiny.

Before humanity can even start describing how extraterrestrial life would behave on Earth, they must first consider the possibility of these creatures visiting the planet. Here’s a thought experiment to explore dabbling with this possibility. Doing so doesn’t mean Earth must prepare its defenses or assemble a welcoming party. Instead, it examines why the extraterrestrials would even consider entering Earth’s premises.

Aliens to Enslave Humanity and For Breeding Partners

Aliens enslaving each other is a typical trope for many science fiction universes. Enslavement of vulnerable or defeated enemies is regrettably a prevalent feature of humanity’s history. Hence, it’s easy to see species with more power, especially one allowing them to voyage between the stars and marshal energy sources, enslaving people. Constructing robots, or other forms of mechanization or automation, would be a far more effective solution for labor. People are feeble in comparison to what the extraterrestrials can do. Not to mention, they need a lot of resources to keep them alive.

Aliens Come to Harvest People for Food

If aliens don’t need to enslave humanity or breed with them, they might come to Earth for a drive-by-meal. Would they even be able to digest us? This might be one of the first questions to pop into one’s curious mind. However, with their advanced traits, anything can be possible. Their fundamental features are far superior to humans; who’s to say they can’t consume or digest human bodies?

There’s no way of telling if humans have any benefits to the aliens’ systems. But if they have, nothing can probably stop the extraterrestrials from taking what they need.

Aliens Come to Suck Their Waters Dry

If aliens need any identical biochemistry to bother harvesting humans for food, it’s unquestioned how they may also come to Earth to gather other essential substances. All lives on Earth thrive with water. It’s astonishingly versatile as a solvent and participant in bodily processes and biochemistry. Hence, it’s possible extraterrestrial life would also need this compound. Perhaps, aliens are drawn to Earth for its beautiful oceans, rivers, and lakes to siphon off its hydrological cycle.

Aliens Come Looking for a New Home

The galaxy offers numerous estate possibilities for when aliens need to move homes. If situations on their home planet become rocky, they may need to find a new territory to call home, and Earth is one of the best options. A terrestrial planet must offer more than a habitable zone to support complex life, as life requires narrower environmental conditions. The Earth’s features go beyond warm oceans to maintain a stable surface environment for geological periods. Undoubtedly, it can support the extraterrestrials’ living conditions and demands.

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