Arizona, with its vast, clear skies and high desert climate, offers exceptional opportunities for stargazing and comet hunting. Throughout history, several notable comets have graced the Arizona sky, captivating observers with their ethereal beauty and scientific significance.

Historical

Date	Comet	Observer
1910	Halley’s Comet	Percival Lowell
1997	Hale-Bopp	Numerous observers
2007	McNaught	Mount Lemmon SkyCenter
2013	ISON	Lowell Observatory
2020	Neowise	Sedona Stargazing

Upcoming Comet Sightings

While comets are notoriously unpredictable, astronomers have identified several potential comets that may be visible from Arizona in the coming years:

Date	Comet	Magnitude (brightness)
2023	C/2022 E3 (ZTF)	-5.5
2024	C/2021 O3 (PanSTARRS)	-4.5
2025	C/2019 U6 (ATLAS)	-6.0
2026	C/2022 J2 (Farnocchia)	-5.0

Tips for Comet Observing in Arizona

Choose a clear night with minimal light pollution. Head to designated dark sky sites, such as the Kitt Peak National Observatory or the Painted Rock Petroglyph Site.
Use binoculars or a telescope for enhanced viewing. To observe faint comets, magnification will be essential.
Look for a diffuse, fuzzy object with a tail. Comets often appear as a hazy, elongated blob with a faint tail extending from one end.
Use a star chart or comet-tracking app to locate comets. These tools will help you identify possible comet sightings in the night sky.
Be patient and persistent. Observing comets can take time and effort. Don’t give up if you don’t see a comet initially.

Frequently Asked Questions (FAQ)

Q: What is a comet?
A: A comet is a small, icy body that orbits the Sun and occasionally becomes visible from Earth when it approaches the Sun and develops a bright, visible tail.

Q: Why do comets have tails?
A: When a comet approaches the Sun, the heat and solar radiation vaporize some of its ice, creating a gaseous tail that points away from the Sun.

Q: Can comets be dangerous?
A: Most comets are harmless to Earth. However, some large comets have impacted Earth in the past, causing significant environmental damage.

Q: Can I see comets in Arizona without a telescope?
A: Some brighter comets may be visible to the naked eye, but a telescope or binoculars will greatly enhance your viewing experience.

Q: Where can I find more information about comet sightings?
A: The Arizona Astronomical Society, the American Astronomical Society, and NASA’s Jet Propulsion Laboratory provide up-to-date information on comet sightings and observing opportunities.

References:

NASA’s Comet Observation Handbook
[Arizona Skies Monthly Stargazing Report](https://www.public.asu.edu/~abergey/az skies/stargaze/)
American Astronomical Society: Comet Observation Guide

Table of Contents

Comet Observations from Arizona

Observing comets from Arizona offers exceptional opportunities due to its clear skies and high elevation, providing astronomers with ideal conditions for detailed study. Arizona’s observatories, such as the Kitt Peak National Observatory and the Lowell Observatory, host specialized telescopes specifically designed for comet observation.

Arizona-based astronomers have made significant contributions to comet research, including:

Discovered comets: Arizona has been the birthplace of over 100 newly discovered comets.
Detailed observations: Arizona observatories have provided detailed data on cometary structure, composition, and evolution.
Spectroscopic studies: Arizona astronomers have used spectrographs to analyze the chemical composition of comets, providing valuable insights into their origins.
Infrared observations: Arizona’s infrared capabilities have enabled astronomers to study cometary dust and gas at wavelengths that reveal important physical characteristics.

Ongoing observations continue to enhance our understanding of cometary behavior and their role in the formation and evolution of our solar system.

Professional Astronomy in Arizona

Arizona has a rich history of professional astronomy, with several major observatories located within its borders. The Kitt Peak National Observatory (KPNO), operated by the National Optical Astronomy Observatory (NOAO), is home to several large telescopes, including the 4-meter Mayall Telescope. The National Solar Observatory’s McMath-Pierce Solar Telescope on Kitt Peak is dedicated to studying the Sun. The University of Arizona’s Steward Observatory operates several telescopes on Kitt Peak and the Mount Graham International Observatory (MGIO). The Lowell Observatory in Flagstaff is known for its historic telescopes, including the 24-inch Clark Refractor, which was used to discover Pluto. Additionally, the Arizona Radio Observatory (ARO) in Tucson is one of the world’s leading facilities for millimeter-wave astronomy. These observatories, along with others in the state, contribute to cutting-edge research in various fields of astronomy, including cosmology, astrophysics, and exoplanet discovery.

Astronomers in Arizona

Arizona has a long and rich history of astronomy. The state is home to several major observatories, including the Lowell Observatory, the Kitt Peak National Observatory, and the Very Large Array. These observatories have made important contributions to our understanding of the universe.

Lowell Observatory was founded in 1894 by Percival Lowell. Lowell was an astronomer who was interested in finding evidence of life on Mars. He built Lowell Observatory on Mars Hill in Flagstaff, Arizona, because he believed that the clear, dark skies there would be ideal for observing the planet.

Kitt Peak National Observatory was founded in 1958. It is located on Kitt Peak, a mountain in the Sonoran Desert. Kitt Peak National Observatory is home to several telescopes, including the Mayall 4-meter telescope. This telescope is one of the largest in the world and has been used to make many important discoveries.

The Very Large Array (VLA) is a radio telescope located near Socorro, New Mexico. The VLA consists of 27 radio telescopes that work together to create a single, very powerful telescope. The VLA has been used to make many important discoveries, including the first images of black holes.

Arizona’s observatories have made important contributions to our understanding of the universe. They have helped us to learn about the stars, galaxies, and black holes. They have also helped us to search for evidence of life on other planets.

List of Astronomers in Arizona

Arizona has been a hub for astronomical research and education for decades. The state is home to several world-renowned observatories and astronomy departments, which have attracted a diverse group of astronomers to the region. Some notable astronomers associated with Arizona include:

Edwin Hubble: Pioneered the field of extragalactic astronomy and discovered the expanding universe from his observations at Mount Wilson Observatory in Flagstaff.
Gerard Kuiper: Discovered the Kuiper Belt, a region of icy bodies beyond Neptune. He established the Lunar and Planetary Laboratory at the University of Arizona.
Clyde Tombaugh: Discovered Pluto in 1930 at the Lowell Observatory in Flagstaff.
Carolyn Shoemaker: Co-discovered the Shoemaker-Levy 9 comet that collided with Jupiter in 1994. She was also involved in the discovery of Shoemaker crater in Australia.
Eugene Shoemaker: Co-discovered Shoemaker-Levy 9 comet with Carolyn Shoemaker. He was a planetary geologist who studied impact craters.
Marcia Neugebauer: A leading astrophysicist who studied the solar wind and interstellar medium. She was the first woman to lead NASA’s Jet Propulsion Laboratory.
Regis Blandford: A theoretical astrophysicist who made significant contributions to the study of black holes and active galactic nuclei. He is a professor at the University of Arizona.