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Category Archives: SolarSystem
Nashville’s “Snow Moon”
On the evening of Saturday February 9th, the Nashville area saw an abnormally large moon known as a super-moon. This was also a special moon because it was also known as the “snow moon.” The “snow moon” is a full or new moon of astronomical and cultural significance around the globe. The super-moon phenomenon occursContinue reading “Nashville’s “Snow Moon”” Continue reading
Eclipses!
A solar eclipse occurs when the moon comes in between the path of sunlight and the Earth, casting a shadow on the Earth. Solar eclipses in general are quite rare (only a couple a year), but the moon’s shadow only covers a small portion of the Earth so seeing one is an amazing opportunity. AContinue reading “Eclipses!” Continue reading
The Universe is Incomprehensibly Large
Many people have talked about the feeling of walking outside, looking up at the night sky, and feeling small. You look out into the cosmos, see seemingly countless stars, and think that everything you do on earth is just immeasurably small. Despite many people feeling that way, few truly understand the real scope of theContinue reading “The Universe is Incomprehensibly Large” Continue reading
Observing the Sky at Night
One of my favorite pastimes is observing the sky at night and seeing which constellations I can point out. While I am no expert by any stretch of the imagination, I like to think that I have a basic knowledge of several “main” constellations — Orion’s Belt, the North Star, the Big / Little Dipper,Continue reading “Observing the Sky at Night” Continue reading
Posted in Class, SolarSystem, Stars
Tagged astro2110, me, Solar System, stargazing
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Methane-Based Life
Is liquid water necessary for life to form? If judging strictly from the only life we know, of course. However, humanity’s exploration of the universe has just begun, and we can’t say for sure what lies beyond Earth. Other worlds within our solar system have organic compounds that life could possibly evolve from. In particular, … Continue reading Methane-Based Life → Continue reading
Posted in Aliens, Moons, Science, Space Travel
Tagged astro2110, blog6, life, methane, Solar System, titan
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The Rare Earth Hypothesis
I was inspired by Victoria’s post to think more about the Fermi Paradox, and specifically, explanations of the uniqueness of intelligent life on Earth. The Rare Earth Hypothesis is one such explanation; it postulates that conditions favorable to life (and particularly intelligent life) are incredibly rare in the universe. It is in opposition to hypotheses […] Continue reading
Posted in Aliens, Exoplanets, Terrestrials
Tagged astro2110, blog7, earth, Fermi Paradox, Moon, Solar System
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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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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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The Northern Lights
One of the world’s most fascinating and natural wonders are the Northern Lights. These magical lights come in a variety of dancing colors. This seemingly random light show occurs as a result of interactions of Earth’s magnetic field and atmosphere with solar winds. Solar winds released by the Sun’s sunspot regions travel through space until … Continue reading The Northern Lights → Continue reading
Posted in Light, Physics, Sun
Tagged astro2110, blog7, northern lights, Solar System
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exo… moons?
What are exomoons? Well, we have already studied exoplanets (short for extra-solar planets) which are planets that are not from our star system. Accordingly, exo-moons are moons that orbit planets that orbit stars that aren’t the Sun. Sounds pretty cool, right? Well exomoons get even more interesting. In fact, exomoons are currently the subject of…