Entire books have been written about the Gayatri Mantra, so I won't try to repeat or condense them here. All I will say is that this is truly one of the most powerful mantras on the planet and that I do believe, and can speak from experience, that the combination of sounds while singing this mantra cause vibrations that lead to extraordinary experiences that may include Wholeness (Oneness) and Immortality. Try it and see for yourself.
This is interesting, an introduction to how and why this mantra may produce the effects it can in the human experience.
Science Of Gayathri Mantra [Must] 9:58
The excerpt below serves as an introduction to the translated meaning of the Gayatri Mantra. Please do follow the link and read the entire article, it's quite excellent.
My Pilgrimage to Gayatri Mantra by Dr. Manohar Abhay
"Meaning With the Use of Pre-Fix
"With the pre-fix of four words, the mantra is comprised of four parts (1) Aum, Bhur Bhuvah, Suvah,(2) Tat Savitur Veranyam,(3) Bhargo Devasya Dheemahi, (4) Dheeyo Yo Nah Prachodayat. By chanting the first part, one contemplates, to invoke certain powers, on the glory of the light that illumines the three worlds namely; earth, atmosphere and space or the gross, subtle and casual or the three realms of waking, dreaming, and sleep or the three part s of the body (from feet to navel, navel to throat, throat to mind). This prepares the ground for effective functioning of the second, third and the fourth part o f the mantra. This is also an invocation to pay reverence to the planes of our existence (the planes of our ordinary life- the physical, astral and mental) and to invite their presiding deities to support and help us. These three parts are in praise of the glory, the splendour that flows from the light. It is an invocation to Savitur (the centre of light) for granting more light. Indirectly, it is the Supreme-Conscious- Being within the cosmic sun or light of lights, the creator of all forces, which is praised here.
"Taking together all the four important parts of the mantra, its meaning reads as follows:
We meditate (dheemahi) on the spiritual effulgence or glory (bhargo) of that adorable supreme divine reality (varenyam devasya), the source or projector (savitur) of the three phenomenal realms of the gross (bhur), the subtle or the psychical (bhuvah) and the potential or casual(svah). May that(tat)Supreme-Divine-Being stimulate (prachdayat) our (na) intellect (dheeo)."
The lyric to the mantra:
Aum Bhur Bhuva Svaha
Tat Savitur Varenyam
Bhargo Devasya Dheemahi
Dheeyo Yo Na Prachodayat
1 - Gayatri Mantra (27 Repetitions) 9:14
2 - Gayatri Mantra - Jagjit Singh 5:33
3 - Gayatri Mantra Anuradha Paudwal 9:32
4 - Ravi Shankar Gayatri Chants#A3C23 3:30
Ravi Shankar and George Harrison
5 - Gayatri Mantra bellísimo! [Tina Malia] 7:35
6 - The Gayatri Mantra - Music for a peaceful Planet by IndiaJiva 4:44
7 - Suresh Wadkar - Gayatri Mantra 7:37
8 - Gayatri Mantra con Sonia Casado Saraswati 5:23
9 - Sathya Sai Baba chanting the Gayatri 5:10
10 - Gayatri mantra, Devi the Goddess by Shanti Mayi 6:15