Astronomy has really picked up its game over the past few years. With fancy technology, math and computer simulation, scientists have managed to estimate a total of two-hundred billion planets in this galaxy that could have other forms of life.
Last week, experts in various scientific fields gathered in Paris to discuss why, if there is so high a chance that aliens exist, we haven't come across any yet.
This is called the Fermi Paradox, and they've got some pretty wild theories about it.
According to the "zoo hypothesis," aliens must know about humans, they just don't want to meet us (and, honestly, we don't blame them).
Another theory, the "galactic quarantine," suggests that aliens are just "too nice" to disturb our lives.
But what if it's really our arrogance that keeps our neighbors away?
Recently, scientists started using telescopes both on the ground and in space.EarthSky, reports. Specifically, they looked at exoplanets, planets beyond our solar system that orbit other stars.
What about planets that don't orbit any stars and simply free-float in space?
The numbers are fairly new - the results were published just last month!
So where did that huge number come from?
The simulation told them that three-hundred and fifty-seven of these would become free-floating planets within eleven million years since their beginning.
But the Trapezium cluster is just one of many that we know about.
So the chance of extraterrestrial life is very high!Forbes. "Every two years, METI (Messaging Extraterrestrial Intelligence) International organizes a one-day workshop in Paris as part of a series of workshops entitled What is Life? An Extraterrestrial Perspective," says the organizer and member of METI’s Board of Directors, Florence Raulin Cerceau.
At the workshop, scientists discuss the most insane questions you've ever heard:
"Should we send intentional radio messages to nearby stars to signal humanity’s interest in joining the 'galactic club?'"
But the one question that the workshop is working on this year is, "Why haven't we made contact with alien civilizations?"
This is called the Fermi Paradox.
The Fermi Paradox addresses one major contradiction in astronomy.
"Are there biological or sociological explanations for this 'Great Silence?'"
"The question 'Are we alone?' affects us all, because it is directly related to humanity and our place in the cosmos."
What is the "zoo hypothesis"?
That would make sense as to why it's called the "Great Silence."
"How can we get the galactic zookeepers to reveal themselves?"
@erinasimon Up close and personal! #alien https://t.co/WA6xHUWuAr— stephanie lejeune (@stephanie lejeune)1553539632.0