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Author Archives: sarabkeller
Where is everyone?
This past couple weeks, we spent time looking in-depth at the Drake equation, a hypothetical equation that uses estimation to “calculate” how many communicating civilizations there likely should be within any one galaxy. Using accepted values for each variable within the Drake equation, this number is roughly 30 for one galaxy. That number multiplied by the […]
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Posted in Aliens, Universe
Tagged astro2110, blog9, drakeequation, fermiparadox
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Where did all the dinosaurs go?
I think one of the more fascinating topics in Earth’s past is the mystery of the dinosaurs. They were here 65 million years ago (for a shockingly long time—if you remember, they were here for almost a week in the “calendar” of the universe!) and then suddenly disappeared. So, what happened to them? It is […]
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Posted in Historical, Terrestrials
Tagged asteroid, astro2110, blog8, comet, Dinosaurs, extinction, impact, Solar System
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“Hot” Jupiters
Last unit, we learned about the formation of our own solar system, in which small, rocky planets formed close to the Sun, and large, gas giants formed far from the Sun (past the frost line). This is due to the fact that during planetary formation, the area closest to the Sun was extremely hot, and […]
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Planet 9
It was a sad day when the powers that be decided that Pluto was no longer fit to be called a planet. However, this January, in a shocking turn of events, scientists at Caltech may have discovered (or somewhat indirectly presume) the existence of a real ninth planet, an ice giant by the incredibly original […]
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The Atmosphere of Venus
I have always been oddly fascinated by Venus. Not only is it the Roman name for arguably the most interesting (and controversial) Greek Goddess, Aphrodite, but it also has a lot of really fascinating characteristics. The surface of Venus is so hot that robotic probes wouldn’t be able to last for very long on it, […]
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Posted in Terrestrials
Tagged astro2110, Atmosphere, blog5, climate, greenhouseeffect, Solar System, venus
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The Effect of Living in Space
While I think that studying space and astronomy is super awesome, I honestly am not sure I can imagine anything worse than living in space for an extended period of time. As we discussed in class, living in space (or at least in orbit) is essentially like being in constant free fall. You know that stomach […]
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Posted in Space Travel
Tagged astro2110, astronauts, Biology, blog4, lifeinspace, spacetravel
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The Effect of Living in Space
While I think that studying space and astronomy is super awesome, I honestly am not sure I can imagine anything worse than living in space for an extended period of time. As we discussed in class, living in space (or at least in orbit) is essentially like being in constant free fall. You know that stomach […] Continue reading
Posted in Space Travel
Tagged astro2110, astronauts, Biology, blog4, lifeinspace, spacetravel
Comments Off on The Effect of Living in Space
How Gravity Affects Space-Time
One of the more interesting (and more confusing) concepts we’ve learned thus far in the Solar System is the bending of spacetime. As can be seen in the figure below, massive objects with gravity (such as planets or stars) have the unique property in that they can bend the spacetime “grid” around them. Before you […]
Continue reading
How Gravity Affects Space-Time
One of the more interesting (and more confusing) concepts we’ve learned thus far in the Solar System is the bending of spacetime. As can be seen in the figure below, massive objects with gravity (such as planets or stars) have the unique property in that they can bend the spacetime “grid” around them. Before you […] Continue reading
Historical Astronomers in Context
Isaac Newton: January 4, 1643-March 21, 1727 Concurrent World Events 1688: Glorious Revolution in England. James II is dethroned and replaced by William and Mary, thus converting England from Catholicism to Protestantism. 1692: Salem witch trials in Salem, Massachusetts. This was a time of public hysteria against theorized “witches”, resulting in 20 deaths of accused witches […]
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Posted in Historical
Tagged astro2110, HW6, Newton
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