Tag Archives: comet

Friday Night Spectacle

Tonight, on this February 10th, there is supposed to be a full moon, a lunar eclipse, and a comet, all of which are supposed to be visible. This month’s full moon is called the “Snow Moon.”  This name came from Native American tradition, in which the full moons of each month bore different names.  However, this full moon … Continue reading Friday Night Spectacle Continue reading

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Halley’s Comet

Halley’s Comet is visible from Earth every 75-76 years. It is the only known short-period comet (a comet that has an orbital period of less than 200 years) that is visible to the naked eye. Halley most recently visited the inner parts … Continue reading Continue reading

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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 […] Continue reading

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Comet Brightness – Not Related to Test Scores

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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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… Continue reading

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Rosetta’s Trajectory

This photo found on NASA’s Solar Exploration page diagrams the trajectory for the European Space Agency’s mission Rosetta’s exploration of the comet 67P/Churyumov-Gerasimenko. Launched in 2004, Rosetta has since flown-by Earth three times, Mars, and two asteroids, and is scheduled to arrive at the comet later this year.  It’s so how cool scientist are ale … Continue reading Rosetta’s Trajectory Continue reading

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Halley’s Comet

Halley’s Comet is the most well known comet because it is the only short-term comet that is visible from Earth with the naked eye. Halley’s Comet was seen multiple times throughout history. The first known observation of Halley’s Comet was in 239 B.C. by Chinese astronomers. When it returned in 164 B.C. and 87 B.C. […] Continue reading

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Edmond Halley: Proving Newton

Newton was the first to provide a mathematical construct to describe the effects of planetary motion around the Sun. But then the question arose, how could we find evidence for the theory? Stepping up to the plate was the prominent astronomer Edmond Halley. Born in the English countryside on November 8, 1656, Halley was a … Continue reading Edmond Halley: Proving Newton Continue reading

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Halley’s Comet Shooting Through the Sky

In 1705, Edmond Halley noticed records of comets passing by Earth in 1531, 1607, and 1682.  While at first they were thought to be three different comets, Halley thought they were all the same one.  The comet passes by Earth around every 75 years.  It was here last in 1986, and is predicted to come […] Continue reading

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A Changing Vision

In the news recently (back at the end of March), astronomers began to hypothesize (running simulations and doing extensive calculations) about what would happen if Comet 2013 A1 were to hit mars. Right now, this 1 to 3 km in diameter (the nucleus size) comet has a roughly 1 in 2000 chance of impacting Mars. […] Continue reading

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