Tag Archives: astro201

Krakatoa: Will It Erupt Again?

Posted on April 5, 2015 by pgolemanska

Krakatoa is one of the deadliest volcanoes in human history. The island of Krakatoa (Krakatau) is part of the Indonesian Island Arc. It’s a volcanic island that has undergone a dramatic eruption in 1883. In May 1883, sailors began noticing clouds of ash rising more than 6 miles above the volcano as shown on the […] Continue reading →

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Ganymede’s Ocean

Posted on April 5, 2015 by pgolemanska

When we think of Earth we tend to associate it very strongly with water and life. It makes sense since water covers up 75% of Earth’s surface. Water in liquid form seems to be unique to our world … or does it? … As it turns out, Earth’s salty water oceans may not be the […] Continue reading →

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The Cosmic Snowball

Posted on April 5, 2015 by jamej00

Halley’s Comet This video tells us about the history of Halley’s Comet, which turns out to have actually been documented in medieval history in previous passes by the sun.  Because of the rarity with which comets actually appear in our night sky, they used to be tied to ancient superstitions; for example, to the ancient Chinese they signaled a… Continue reading →

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Messenger’s Last Legs

Posted on April 5, 2015 by dillonkoval

The MESSENGER mission, short for Mercury Surface, Space Environment, Geochemistry and Ranging sent up the probe in August 2004. In March 2011 it became the first spacecraft to orbit Mercury. The probe has done a lot in its years around the Solar System’s first planet including: constructing the best-ever maps of Mercury and discovering carbon-containing […] Continue reading →

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Gamma-ray Bursts

Posted on April 5, 2015 by matthewrbirnbaum

Let’s start this post with what gets everyone’s attention during class: mass extinction. This somber topic always seems to turn heads. If collisions and exploding suns aren’t enough to make you fear extinction billions of years away, a new paper introduces us to a new threat that potentially could have wiped out most of life […] Continue reading →

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Comet Brightness – Not Related to Test Scores

Posted on April 5, 2015 by dillonkoval

A comet is an icy Solar System body with very elliptical orbit that takes it close to the Sun on one end and far from the Sun on the other. When it gets close to the Sun it begins to outgas, forming a visible atmosphere called a coma and often also a tail. One noticeable […] Continue reading →

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Beyond Pluto

Posted on April 5, 2015 by matthewrbirnbaum

Not long after a couple of astronomers announced hints of a giant planet prowling beyond Pluto, a team in Spain says there may actually be two supersize planets hiding in the outer reaches of our solar system. After the discovery of a potential dwarf planet 2012 VP113 in March, astronomers started questioning the curiously aligned […] Continue reading →

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The Mystery of the Mass Extinction

Posted on April 5, 2015 by oliviasn

Before reading the section in Chapter 12 of the textbook on cosmic collisions (Section 12.4), I had not realized that there exists some controversy as to whether or not an impact killed the dinosaurs. I had always been taught that an asteroid hitting the Earth resulted in the mass extinction and had never considered that […] Continue reading →

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What would life be like on Pluto for humans?

Posted on April 5, 2015 by karenagrebenc

photo from space.com Above is an artist’s conception of what Pluto would look like if one could stand on one of the dwarf planet’s moons and stare back at Pluto.  But this article goes on to tell us what our experiences would be if we were to actually step foot on the surface of Pluto […] Continue reading →

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The Galilean Moons

Posted on April 5, 2015 by oliviasn

When I went out observing on the 24th Avenue Parking Garage the other night, every astronomical object that I saw through the telescope amazed me, but Jupiter especially captured my attention. I had never viewed Jupiter through a telescope before, and on this beautiful and mostly clear night, I was able to clearly see not […] Continue reading →

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