Joannes Theodorus Maria (Jook) Walraven, born on August 20, 1947, is a Dutch experimental physicist known for his contributions to quantum gases. He studied physics at the University of Amsterdam, completing his PhD under Isaac Silvera focusing on Bose-Einstein Condensation. Walraven developed a method of evaporative cooling to create atomic hydrogen gas, aiming for it to become a quantum gas. He later transitioned to laser science, becoming a key figure in achieving Bose-Einstein Condensate and was elected a fellow of the American Physical Society in 2005.
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Age (Today)
Your next birthday is 336 days away.
Place of Birth
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August 20, 1947 Facts
Generation Group
Jook Walraven belongs to the Baby Boomers group.
Place of Birth: Amsterdam
Educated At: University of Amsterdam
Occupation: physicist
Employers: Van der Waals-Zeeman Institute for experimental physics | AMOLF
Awards Received: Fellow of the American Physical Society (2005)
Astrology Analysis
Note: This birth chart is calculated using the date and place of birth, with the time set to noon (12:00 PM) local time. While this provides accurate planetary positions for most celestial bodies, the Ascendant (Rising Sign) and house cusps are not calculated since they require precise birth time. For a complete astrological analysis including houses and rising sign, please provide the exact birth time.

Ephemeris for August 20, 1947
Note: Moon position is location and time sensitive.Planet | Position (Tropical, Western) | Transits on August 20, 2025 | Secondary Progressions for August 20, 2025 |
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Sun | 26 Leo 49 | 27 Leo 55 | 13 Scorpio 26 |
Moon | 23 Libra 37 | 26 Cancer 17 | 26 Leo 25 |
Mercury | 18 Leo 11 | 9 Leo 26 | 11 Scorpio 40 |
Venus | 23 Leo 2 | 24 Cancer 4 | 0 Sagittarius 7 |
Mars | 4 Cancer 28 | 8 Libra 39 | 19 Leo 32 |
Jupiter | 19 Scorpio 26 | 15 Cancer 46 | 2 Sagittarius 48 |
Saturn | 14 Leo 46 | 0 Aries 37 | 22 Leo 25 |
Uranus | 25 Gemini 25 | 1 Gemini 22 | 25 Gemini 40 |
Neptune | 9 Libra 0 | 1 Aries 37 | 11 Libra 44 |
Pluto | 13 Leo 24 | 1 Aquarius 58 | 14 Leo 55 |
Rahu | 27 Taurus 52 | 19 Pisces 13 | 23 Taurus 44 |
Ketu | 27 Scorpio 52 | 19 Virgo 13 | 23 Scorpio 44 |
Chandra Kundali (Equal House, North Indian Diamond Chart)

Astrology Transits Analysis for Year 2025
Note: Multiple transits occurring in close proximity often signify a major event in a person's life.Jook Walraven's 2025 Transits to Natal Planets
- Mars square Moon
Exact: 21 January, 2025 - Mars square Moon
Exact: 01 April, 2025 - Saturn sextile Rahu
Exact: 11 May, 2025 - Jupiter trine Moon
Exact: 11 May, 2025 - Mars conjunction Saturn
Exact: 21 May, 2025 - Mars conjunction Sun
Exact: 10 June, 2025 - Jupiter conjunction Mars
Exact: 30 June, 2025 - Mars aspects Rahu
Exact: 18 September, 2025 - Jupiter trine Jupiter
Exact: 18 September, 2025 - Saturn sextile Rahu
Exact: 18 September, 2025