Category Archives: comet

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 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 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 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 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 Continue reading

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