How Old Is the Earth?
Even when it is realized that chapter 1 of Genesis does not describe the beginning of all things, or even the starting point of mankind, but only the beginning of this earth, it cannot be said definitively when that beginning was. In other words, the scriptures do not provide sufficient information to accurately determine the age of the earth. Generally speaking, those who accept the scriptural account subscribe to one of three basic theories about the age of the world. All three theories depend on how the word day, as used in the creation account, is interpreted.
The first theory says that the word day is understood as it is used currently and therefore means a period of 24 hours. According to this theory, the earth was created in one week, or 168 hours. Thus, the earth would be approximately six thousand years old. (Many scholars agree that there were approximately four thousand years from Adam to Christ and that there have been nearly two thousand years since Christ was born.) Very few people, either members of the Church or members of other religions, hold to this theory, since the evidence for longer processes involved in the Creation is substantial.
A second theory argues that Abraham was told through the Urim and Thummim that one revolution of Kolob, the star nearest to the throne of God, took one thousand earth years (see Abraham 3:2–4). In other words, one could say that one day of the Lord’s time equals one thousand earth years. Other scriptures support this theory, too (see Psalm 90:4; 2 Peter 3:8; Facsimile No. 2 from the book of Abraham, figures 1, 4). If the word day in Genesis was used in this sense, then the earth would be approximately thirteen thousand years old (seven days of a thousand years each for the Creation plus the nearly six thousand years since Adam’s fall). Some see Doctrine and Covenants 77:12 as additional scriptural support for this theory.
Creation room in the Los Angeles Temple
Although the majority of geologists, astronomers, and other scientists believe that even this long period is not adequate to explain the physical evidence found in the earth, there are a small number of reputable scholars who disagree. These claim that the geologic clocks are misinterpreted and that tremendous catastrophes in the earth’s history speeded up the processes that normally may take thousands of years. They cite evidence supporting the idea that thirteen thousand years is not an unrealistic time period. Immanuel Velikovsky, for example, wrote three books amassing evidence that worldwide catastrophic upheavals have occurred in recent history, and he argued against uniformitarianism, the idea that the natural processes in evidence now have always prevailed at the same approximate rate of uniformity. These books are Worlds in Collision, Ages in Chaos, and Earth in Upheaval. Two Latter-day Saint scientists, Melvin A. Cook and M. Garfield Cook, have also advocated this theory in their book Science and Mormonism. A short summary of the Cooks’ approach can be found in Paul Cracroft’s article “How Old Is the Earth?” (Improvement Era, Oct. 1964, pp. 827–30, 852).
A third theory says that the word day refers to a period of an undetermined length of time, thus suggesting an era. The word is still used in that sense in such phrases as “in the day of the dinosaurs.” The Hebrew word for day used in the creation account can be translated as “day” in the literal sense, but it can also be used in the sense of an indeterminate length of time (see Genesis 40:4, where day is translated as “a season”; Judges 11:4, where a form of day is translated as “in the process of time”; see also Holladay, Hebrew and Aramaic Lexicon of the Old Testament, pp. 130–31). Abraham says that the Gods called the creation periods days (see Abraham 4:5, 8).
If this last meaning was the sense in which Moses used the word day, then the apparent conflict between the scriptures and much of the evidence seen by science as supporting a very old age for the earth is easily resolved. Each era or day of creation could have lasted for millions or even hundreds of millions of our years, and uniformitarianism could be accepted without any problem. (For an excellent discussion of this approach see Henry Eyring, “The Gospel and the Age of the Earth,” [Improvement Era, July 1965, pp. 608–9, 626, 628]. Also, most college textbooks in the natural sciences discuss the traditional dating of the earth.)
While it is interesting to note these various theories, officially the Church has not taken a stand on the age of the earth. For reasons best known to Himself, the Lord has not yet seen fit to formally reveal the details of the Creation. Therefore, while Latter-day Saints are commanded to learn truth from many different fields of study (see D&C 88:77–79), an attempt to establish any theory as the official position of the Church is not justifiable.