the First Congregational Church. He also played tennis frequently at the former tennis courts at the Smithsonian Castle. Later life and legacy On May 31, 1955, the Smithsonian held a birthday party for Abbot, marking his 83rd birthday and his 60th year of association with the Smithsonian. The event was held at the Smithsonian Castle and a bronze bust of Abbot, by Alicia Neatherly, was presented, and donated to the National Gallery of Art. Charles Greeley Abbot died, at age 101 in Maryland, on December 17, 1973. The American Solar Energy Society has an award named in Abbot's honor, which is awarded for contributions to solar energy research. The Abbot crater on the Moon has been named after him. Research work Abbot began his astrophysics research focusing on solar radiation before proceeding to chart cyclic patterns found in solar variations. With this research he hoped to track solar constant in order to make weather pattern predictions. He believed that the sun was a variable star which effected the weather on Earth, which was criticized by many contemporaries. In 1953, he discovered a connection between solar variations and planetary climate. This discovery allowed general climate patterns to be predicted 50 years in advance. He did field work at the Smithsonian Institution Shelter, which was built during his tenure as director at SAO, Lick Observatory, and Mount Wilson Observatory. At Lick, he worked with W.W. Campbell. To fight critics, Abbot would utilize balloons with pyrheliometers installed on them for measurements. He was the first scientist in America to do so, with the balloons reaching upwards of 25 kilometers. One balloon returned data that allowed Abbot to determine the solar constant at the highest point of the Earth's atmosphere. Later in his research career, he turned his focus on solar energy use. An instrumentalist, he invented the solar cooker, which was first built at Mount Wilson Observatory, the solar boiler, and held fifteen other patents related to solar energy. For his research and contributions to the sciences, Abbot was awarded a Henry Draper Medal in 1910 and a Rumford Medal in 1916. Further reading Selected publications by Charles Greeley Abbot The 1914 Tests of the Langley "Aerodrome". Washington, D.C.: Smithsonian Institution (1942). An Account of the Astrophysical Observatory of the Smithsonian Institution. Washington, D.C.: Smithsonian Institution (1966). Adventures in the World of Science. Washington, D.C.: Public Affairs Press (1958). "Astrophysical Contributions of the