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Tag Archives: blog6
Are We Alone?
As we’ve seen over the past few generations, our ability to harness technology to accomplish things never before seen or done has only increased exponentially. As a race, we’ve been able to photograph a black hole, we’ve been able to send probes to places in space that were thought to be unreachable, and we’ve just … Continue reading Are We Alone? → Continue reading
Are Extremophiles Our Roommates?
Extremophiles are microorganisms that can survive in extreme conditions, such as high temperatures or great acidity. A recent study has found extremophiles in a location much more familiar to us, and it’s actually in the homes of humans. The study took samples from water heaters across all 50 states. Around 50% of the tested samples … Continue reading Are Extremophiles Our Roommates? → Continue reading
Posted in Observables, Science
Tagged astro2110, blog6, earth, extremophiles, microbes
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Adaptive Archaea
Discovered in 1970, Archaea might be the least well-known of the three domains of life (the others being Bacteria and Eukaryota), but it is a fascinating and diverse group of organisms and quite possibly the first on Earth. Like bacteria, archaea are unicellular, prokaryotic organisms, meaning that they lack nuclei and other membrane-bound organelles in […] Continue reading
Posted in Aliens, Terrestrials
Tagged astro2110, astrobiology, blog6, life, Solar System
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Project Orion: Humanity’s Best Hope?
In the 1950’s and 60’s, optimism about the new discoveries related to fission of atoms and available energy ran rampant. Ambitious designs of all kinds were created based around the new marvel of nuclear energy. Eager to harness the massive potential of fission and fusion reactions, scientists and engineers at NASA began to ponder the … Continue reading Project Orion: Humanity’s Best Hope? Continue reading
Posted in Historical
Tagged astro2110, blog6, propulsion methods, spacecraft
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The Case for Tardigrades
I can’t remember if it was Cosmos or Planet Earth, but it was narrated by Neil DeGrasse Tyson. My roommate and I were watching it before bed, and it was fascinating. Almost the entire episode was dedicated to tardigrades, more colloquially known as water bears. These microscopic animals are uncannily resilient. Like, scarily so. According […] Continue reading
Posted in Class
Tagged astro2110, blog6, extremophiles, life, tardigrades
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Where is everybody?
Despite evidence that suggests that there should be extraterrestrial civilizations, we have not yet detected any signs of these civilizations. This issue is called the “Fermi Paradox,” after Enrico Fermi—a Nobel Prize-winning physicist. Compared to the lifespan of the universe, our sun is relatively young at 4.6 billion years old, so there are older stars […] Continue reading
A Whole New World!
Because the caves, mines, and crevasses on Earth are filled with extremophiles, NASA uses those lifeforms as a guide to its exploration of the universe. The hidden parts of the planet have to make their own way of survival. Surface life has photosynthesis, but subsurface only a tiny fraction of that energy trickles down so … Continue reading A Whole New World! → Continue reading
Posted in Class, General, Observables, Terrestrials
Tagged astro2110, astrobiology, blog6, extremophiles, NASA
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How Hard is Interstellar Travel?
Traveling to other solar systems seem pretty easy in the movies, but in real life, it could get quite complicated. First of all, the closest star system to us is Alpha Centauri, which is 4.37 light-years away, which is very far from us even if we can travel at the speed of light. But even … Continue reading How Hard is Interstellar Travel? → Continue reading
Posted in Physics
Tagged astro2110, blog6, interstellar, Solar System
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Electric Propulsion
A propulsion method I was unaware of is electric propulsion (EP). An EP system consists of thruster components, propellant components, power components, and an optional pointing mechanism. Essentially, electric and magnetic fields react to charged particles in the rocket’s exhaust which accelerates charged particles that make up propellant. This requires less energy than chemical rockets … Continue reading Electric Propulsion → Continue reading
Posted in Class
Tagged astro2110, blog6, Solar System, technology
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What Is Life?
While talking about the search for extraterrestrial life, you may notice the difficulty in drawing a line between the living and nonliving. Bacteria are considered life forms, but viruses are not. Artificial Intelligence is able to do a lot of things that human beings can do, but it is not viewed as life by the … Continue reading What Is Life? → Continue reading