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Category Archives: Aliens
What if life existed in every solar system?
The Drake equation investigates the likelihood of intelligent, communicating life existing on other worlds in our galaxy. But what if life could easily exist on other worlds, and there was life in every solar system around us? What could this potentially mean for us? First, we must consider the fact that the closest star to […] Continue reading
Posted in Aliens, Exoplanets, Space Travel
Tagged astro2110, blog8, drakeequation, spacetravel
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The Golden Record: A Message Sent to the Cosmos
In 1977, the Voyager I and Voyager II spacecrafts were launched into space to study the outer solar system. After conducting flybys of the planets in the outer solar systems, the Voyager spacecrafts continued to travel away from Earth, and will eventually travel out of our solar system. With this knowledge, golden records were placed […] Continue reading
Posted in Aliens, Class, Space Travel
Tagged astro2110, blog7, communication, voyager
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The Fermi Paradox
“If life is so easy, someone from somewhere must be calling by now.” Nobel prize winning physicist Enrico Fermi, over casual lunch 70 years ago in 1950, asked confronted this very same question (Space). Given the current scientific literature of his time, Fermi realized that the requirements for life are not as elusive or asContinue reading “The Fermi Paradox” Continue reading
‘Oumuamua: An Interstellar Visitor
In 2017, a small, long object between 100 and 1,000 meters in length and between 35 and 167 meters in height and width passed through the inner solar system with a trajectory and speed only possible if it originated from beyond our solar system. This object, now known as ‘Oumuamua, is one of the first […] Continue reading
Posted in Aliens, Class, Exoplanets, Universe
Tagged astro2110, blog6, extrasolar, interstellar
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Enceladus: Alien Life in Our Own Solar System?
Enceladus is an icy moon of Saturn, and is fairly small (or medium-sized, for a moon) with a diameter of about 500 km. For reference, the Moon has a diameter of about 3,475 km. Despite its size, however, Enceladus has been rated as among the most probable sources of life in our own solar system […] Continue reading
The Future of Exoplanet Analysis
The search for extrasolar planets and alien life is a fascinating research focus that sits at the intersection of astronomy, physics, planetary science, and biology. As we have discussed in class, discovering exoplanets is a very difficult task, but we have discovered roughly 5,000 exoplanets to date and are making significant progress in that area.Continue reading “The Future of Exoplanet Analysis” Continue reading
Posted in Aliens, Class, Exoplanets
Tagged astro2110, blog5, technology
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Where are they?
The likelihood of life outside of our planet is a heavily debated topic. Overall, it seems reasonable to assume that with all of the unexplored universe around us, and the conditions required to sustain life that are not all that hard to find, there should be plenty examples of life elsewhere. Despite this, and the overwhelming beliefContinue reading “Where are they?” Continue reading
Posted in Aliens, Class
Tagged astro2110, blog8, extraterrestrial, fermiparadox
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The Fermi Paradox
The Fermi Paradox is a baffling observation about the galaxy and extraterrestrial life. The paradox asks, given all of the plausible explanations and arguments for the abundance of life in the universe, why haven’t we encountered signs of such life yet? With a self-replicating automatons and “modest amount of rocket power and an immodest desireContinue reading “The Fermi Paradox” Continue reading
The Fermi Paradox and Great Filters
We briefly discussed the Fermi Paradox in class. However, one major potential “explanation” of the paradox went undiscussed: the idea of various “great filters.” These great filters are supposedly things that naturally arise in the course of life’s and/or civilization’s development that prevent them from becoming long-lasting intelligent life forms. These could be a wideContinue reading “The Fermi Paradox and Great Filters” Continue reading
Posted in Aliens, Class
Tagged astro2110, blog7, Fermi Paradox
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Aliens in Pop Culture
Picture an alien. What did you think it looked like? Maybe you thought of a small green creature with a big head and big eyes, or maybe you thought of ET or one of the people from Avatar or Jar Jar Binks. No matter what you thought of, your picture was likely influenced by popContinue reading “Aliens in Pop Culture” Continue reading