Science in the Torah

The Sheath of the Sun

Our Sages firmly insisted that a sheath exists around the sun, because the Torah states that it is there. Do scientists have something to tell us on this subject?

The Sheath of the Sun

The Midrash (1) states that “there is a sheath around the sun” and explains this to be the meaning of the verse: “He has set up a tent for the sun” (Psalms 19:5). This sheath is mentioned in several places in the Sages’ writings, in which they imply that were it not for its existence, life on earth would suffer terribly and perhaps even perish(2).

Yet, as much as we can see the sun with the naked eye or through a filter, it clearly has no visible sheath or covering. On the other hand, the Sages beheld the same sun, yet firmly insisted that a sheath exists, because the Torah states that it is there. In this age of spacecraft and X-ray photography of the sun, do scientists have something to tell us on this subject?

Dr. N. Vidal, a senior astronomer at the Greenwich Observatory in England, Professor of Astronomy at Australia’s National University and a visiting professor at the Harvard-Smithsonian Center for Astrophysics at Harvard University, Massachusetts, explains:

“The sun is a giant ball of gas, whose outermost temperature is 6000 °C (10,832 °F). Gases at much higher temperatures flow beneath the surface. According to our estimates, the temperature continues to rise as we approach the center of the sun, where it reaches 15,000,000 °C! Today, we picture the center of the sun as a type of ‘nuclear reactor’ that releases vast quantities of heat, which make their way slowly outward. As it moves out, the strength of this heat diminishes until it reaches the surface layer, where it is ‘only’ 6000 °C. The extremely high temperatures within the sun cause gas storms of tremendous proportions, which form waves that crash against the surface gases with unbelievable force. These outer layers themselves absorb the heat being radiated from within the sun, and restrain the shockwaves caused by these waves striking it. We call this outer layer, ‘the sheath.’

At the heart of the sun the temperatures are extremely high… In this area, there is the highest radiation of ultraviolet rays, X-rays, and gamma rays. If these rays were to reach the earth directly, they would incinerate the entire world. The outermost sheath restrains these rays, as well as the shockwaves that burst out from the sun’s interior, and ‘softens’ them. This level is called the ‘photosphere,’ and its temperature is 6000 °C.”

Today we realize that just as the Earth has a surrounding atmosphere, which both provides oxygen for life and protects us from the dangerous cosmic radiation, so the sun has a sheath that protects the inhabitants on Earth. The Sages knew of this sheath’s existence from its source in the Torah. Furthermore, based upon the Midrash, they knew of its protective role, and the fact that Earth’s inhabitants could perish were the sheath to fail in its task.

The facts given above teach us two important lessons:

  • The scientific information provided by the Torah has no human source. Through the Torah, the Creator of the Universe reveals some of the mysteries of the creation to his people – among them, secrets that are invisible to the human observer.
  • We should give full credence to the Sages’ statements and grant them the respect, even when, at first, they seem difficult to grasp.

 

Notes and Sources

(1). Midrash Bereshit Rabbah 6:6.

(2). Loc. cit: “In the future, the Lord God will bare [the sun] from its sheath and will use it to enflame the wicked; as it is written: ‘For the day is coming, burning like an oven… and that coming day will burn them up’ (Malachi 3:19).” See also, Bereshit Rabbah 26:6 on that verse, and BT Baba Metzia 86b, which states that “God removed the sun from its sheath,” in the days following Abraham’s circumcision, so that he would not be bothered by guests. Obviously, this is a metaphor for the extreme heat at the time (additionally, the term “remove it” is used, rather than “bare it” as quoted above). 

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