Michael Francis A'Hearn (November 17, 1940 – May 29, 2017) was an American

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...

and astronomy professor at the

University of Maryland College of Computer, Mathematical, and Natural Sciences The College of Computer, Mathematical, and Natural Sciences (CMNS) at the University of Maryland, College Park, is home to ten academic departments and a dozen interdisciplinary research centers and institutes. CMNS is one of 13 schools and colleg ...

. He was also the principal investigator for

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the US federal government responsible for the civil List of government space agencies, space program ...

EPOXI ''EPOXI'' was a compilation of NASA Discovery program missions led by the University of Maryland and principal investigator Michael A'Hearn, with co-operation from the Jet Propulsion Laboratory and Ball Aerospace. ''EPOXI'' uses the '' Deep Imp ...

mission.

Career

He received his

B.A. Bachelor of arts (BA or AB; from the Latin ', ', or ') is a bachelor's degree awarded for an undergraduate program in the arts, or, in some cases, other disciplines. A Bachelor of Arts degree course is generally completed in three or four yea ...

in science at Boston College and his

Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is ...

Astronomy Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, g ...

at the

University of Wisconsin–Madison A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United Stat ...

. He was the principal investigator for the

'' Deep Impact'' mission. He aided in the development of systems for surveying

abundance Abundance may refer to: In science and technology * Abundance (economics), the opposite of scarcities * Abundance (ecology), the relative representation of a species in a community * Abundance (programming language), a Forth-like computer prog ...

s in comets as well as techniques for determining the sizes of cometary nuclei which uses optical and infrared measurements. His studies focused on comets as well as asteroids and he also supervises numerous graduate students. He was an elected fellow of the AAAS. He authored over 100 papers published in journals and was also an avid sailor who had a commercial coast guard license. In June 1986, the main-belt asteroid 3192 A'Hearn, discovered by American astronomer

Edward Bowell Edward L. G. "Ted" Bowell (born 1943 in London), is an American astronomer. Bowell was educated at Emanuel School London, University College, London, and the University of Paris. He was principal investigator of the Lowell Observatory Near-Earth ...

at Lowell's

Anderson Mesa Station Anderson Mesa Station is an astronomical observatory established in 1959 as a dark-sky observing site for Lowell Observatory. It is located at Anderson Mesa in Coconino County, Arizona, about 12 miles southeast of Lowell's main campus on Mars H ...

in Flagstaff, Arizona, was named after him in honor of his contributions to

comet A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena ...

ary science. In 2008, he received the Gerard P. Kuiper Prize. He died on May 29, 2017 at the age of 76.

Honors

Awards

NASA Exceptional Scientific Achievement Medal The NASA Exceptional Scientific Achievement Medal (abbreviated ESAM) was established by NASA on September 15, 1961, when the original ESM was divided into three separate awards. Under the current guidelines, the ESAM is awarded for unusually sign ...

(2006) * Gerard P. Kuiper Prize (2008) *

(2012) * Gauß-Professur (2014) *

NASA Exceptional Public Service Medal NASA's Exceptional Public Service Medal is a United States government awarded to any non-Government individual or to an individual who was not a Government employee during the period in which the service was performed for sustained performance th ...

(2017)

Eponym

* 3192 A'Hearn, an asteroid of the inner

main-belt The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called ...

named after A'Hearn

References

External links

Michael F. A'Hearn's homepage

Kuiper Prize website of the American Astronomical Society

Nasa bio on Deep Impact website

NASA EPSM award website
{{DEFAULTSORT:A'Hearn, Michael 1940 births 2017 deaths American astronomers Boston College alumni Place of birth missing University of Maryland, College Park faculty University of Wisconsin–Madison College of Letters and Science alumni