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Monthly Archives: April 2015
White dwarf supernovae
White dwarf supernovae only occur in a binary system, in which one of them is a white dwarf while the other can be a giant star or just a main sequence star. As far as we know, a white dwarf is the remnant of a star after the nuclear fusion inside its core has ceased,…
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Halley’s Comet
Halley’s comet is a short-period comet, which can be seen from Earth every 75-76 years so that a person could see it at most twice during his or her lifetime. It is undoubtedly the most famous comet. The last time it returned was in 1986, and it will be back in 2061 as predicted. Halley’s…
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Predicting Impact Events
In 1994, Comet Shoemaker-Levy 9 created a large impact event on Jupiter, giving the scientific community a greater sense of urgency in detecting possible impact objects before they reached Earth. These efforts to detect near-Earth objects, known collectively as “Spaceguard”, have enjoyed both successes and failures. For example, in 2008, the Catalina Sky Survey discovered … Continue reading Predicting Impact Events → Continue reading
Predicting Impact Events
In 1994, Comet Shoemaker-Levy 9 created a large impact event on Jupiter, giving the scientific community a greater sense of urgency in detecting possible impact objects before they reached Earth. These efforts to detect near-Earth objects, known collectively as “Spaceguard”, have enjoyed both successes and failures. For example, in 2008, the Catalina Sky Survey discovered … Continue reading Predicting Impact Events →
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New Horizons
Exploring Pluto Pluto, the small icy body at the edge of our planetary system, has been under scrutiny in scientific …
Posted in Dwarf Planets, Instruments
Tagged astro201, blog7, exploration, NASA, new horizons, pluto, sensors, technology
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Orbital Resonances: They Space Out the Solar System
In class we learned that the divisions in Saturn’s rings are caused by orbital resonance. Orbital resonance is a phenomenon in which “two orbiting bodies exert a regular, periodic gravitational influence on each other,” usually because their orbital periods “match up”. For instance, if particles were in Saturn’s Cassini division, they would orbit twice for … Continue reading Orbital Resonances: They Space Out the Solar System → Continue reading
Posted in Class
Tagged astr201, blog7, orbitalresonance
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Orbital Resonances: They Space Out the Solar System
In class we learned that the divisions in Saturn’s rings are caused by orbital resonance. Orbital resonance is a phenomenon in which “two orbiting bodies exert a regular, periodic gravitational influence on each other,” usually because their orbital periods “match up”. For instance, if particles were in Saturn’s Cassini division, they would orbit twice for … Continue reading Orbital Resonances: They Space Out the Solar System →
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Posted in Class
Tagged astr201, blog7, orbitalresonance
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Exoplanets: Planets Not Orbiting the Sun
Hey there! Today I’m going to be discussing the topic. The definition of an Exoplanet is a planet which orbits a star (or stellar remnant or brown dwarf) which is not the Sun. Thus far, over 1900 exoplanets have been discovered. 480 of these exoplanets are confirmed to exist in multi-planet systems. These planets are […]
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Posted in Class, Exoplanets
Tagged astro201, blog8
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Pluto: Why isn’t it a planet?
Hey Followers! Today, I’m going to be discussing some basic characteristics of the now dwarf planet Pluto. Pluto is the largest object in the Kuiper belt. It is approximately 30-49 AU from the Sun depending on its position in its elliptical orbit (this variance also indicates a high eccentricity in its orbit). An interesting phenomenon […]
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When Will The Next Impact Be?
The Chelyabinsk Meteor as seen by person driving a car right during explosion I watched another video and decided to watch one on the extinction of the dinosaurs. The video is very short and not absolutely thrilling but as I was watching the beginning of the video I thought to myself what if that was…
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