The not other main sequence stars hosted their own

The world is coming to an end. The question raised is how or when. We already know that in a few billion years the Sun will expand and engulf our planet as it consumes its remaining supply of fuel. Planet Earth has gone through five mass extinctions over the course of 4.5 billion years, possibly leading to a new mass extinction which would be a product of our own design through human based global warming or nuclear annihilation. Over the past fifty years the median global temperature has elevated at the fastest rate in history,
meaning that sea levels will rise leaving less land available for
humans to occupy. Are there other planets? Science points to yes. It is known that almost every star in the galaxy is expected to have at least one planet, maybe even several. Before 1995 it was unknown whether or not other main sequence stars hosted their own planets, Missions like Kepler have confirmed over 3,400 exoplanets and have an added 5,400 waiting to be incorporated onto the list. A horde of these planets are gas giants like Saturn while others are covered in ice, but a small handful of these planets are rocky like earth. Asthma and allergies will become more prevalent due to higher air pollution and the increased growth of ragweed and pollen producing plants, while the spread of pathogens that thrive in these types of conditions will lead to infectious diseases. Planets have been found in the habitable zone but are at least 40% larger than earth which makes comprehending the structure difficult, but finding an exoplanet similar in makeup to earth is presenting few difficulties.  Perhaps we will be destroyed by an alien race as the renowned astrophysicist Stephen Hawking believes could happen. Hawking mentions the potential danger in broadcasting signals into space pointing to the fact that we as a species don’t know who or what is in space and if they even have good intentions. As stated by Hawking, extraterrestrial populations could be considerably more advanced than we are, probably by millions of years. Their sensitivity for us might be sparse, while they “may not see us as any more valuable than we see bacteria” (Hawking). What
are we to do about any of this? Is human relocation the answer? Well,
if humanity is to survive a catastrophic disaster on a global scale than
the answer is most likely yes. But with that being said another question is raised. If we inhabit a new planet, will we destroy it as we have our own? Humans are unplugging their own life support system by emitting greenhouse gases, releasing vast amounts of chemicals into our agricultural resources, and degrading land and fresh water systems. Land system change, human-driven climate change, loss of biosphere probity, and the high level of phosphorus and nitrogen leaking into the oceans as a result of fertilizer use. These are worldwide processes that sustain life on earth, four of these processes have exceeded safety measures. If we have done this to our current home, why wouldn’t we do the same to the next.

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