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Halley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, [16] appearing every 72–80 years. [17] It last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061. Officially designated 1P/Halley, it is also commonly called Comet Halley, or sometimes simply Halley.
Dec 8, 2023 · On Friday, Dec. 8, Halley's Comet reaches its farthest point from the sun and begins its journey back through the solar system.
Aug 20, 2024 · Halley’s Comet, the first comet whose return was predicted and, almost three centuries later, the first to be imaged up close by interplanetary spacecraft. In 1705 English astronomer Edmond Halley published the first catalog of the orbits of 24 comets.
- Paul Weissman
- The History of Halley's Comet
- Discovering Halley's Comet
- Halley-Like Comets
- Sending Spacecraft to Halley's Comet
- Additional Resources
The first known observation of Halley's Comet, or Comet Halley, took place in 239 B.C., according to the European Space Agency. Chinese astronomers recorded its passage in the Shih Chi and Wen Hsien Thung Khao chronicles. Another study (based on models of Halley's orbit) pushes that first observation back to 466 B.C., which would have made it visib...
Astronomy began changing swiftly around Shakespeare's time, however. Many astronomers of his time believed that Earth was the center of the solar system, but Nicolaus Copernicus— who died about 20 years before Shakespeare's birth — published findings showing that the center was actually the sun. It took several generations for Copernicus' calculati...
There is a group of comets called "Halley family comets" (HFC) because they appear to share the same orbital characteristics of Halley, including being highly inclined to the orbits of Earth and other planets in the solar system. However, this family has a range of inclinations, which prompts other astronomers to suggest they may have a different o...
When Halley's Comet came by Earth in 1986, it was the first time we could send spacecraft to look at it up close. That was a fortunate occurrence, as the comet ended up being underwhelming in observations from Earth. When the comet made its closest approach to the sun, it was on the opposite side of that star from the Earth — making it a faint and ...
- 3 min
- Elizabeth Howell
Halley is often called the most famous comet because it marked the first time astronomers understood comets could be repeat visitors to our night skies. Astronomers have now linked the comet’s appearances to observations dating back more than 2,000 years.
Nov 8, 2016 · Learn about the famous comet named for astronomer Edmond Halley, who predicted its return in 1758. Discover how Halley's Comet has been observed and interpreted throughout history, from ancient times to modern science.
Oct 14, 2021 · Learn about the famous comet that appears every 76 years and its association with the Norman invasion of England in 1066. Discover how Halley's Comet was studied by spacecraft in 1986 and what we have learned about its origin and composition.
