James Thomson, born on December 20, 1958, is an American developmental biologist known for deriving the first line of human embryonic stem cells in 1998 and for deriving human induced pluripotent stem cells in 2007.
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Sunsign, Tropical Zodiac
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Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 357 days away.
Place of Birth
Time Zone - America/Chicago (6:0 W)
Chinese Zodiac Sign
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Name Number (Pythagorean)
Meaning of the name - James
supplanter, he who takes the place of another
Read Full James Name AnalysisDecember 20, 1958 Facts
Generation Group
James Thomson belongs to the Baby Boomers group.
Place of Birth: Oak Park
Educated At: Oak Park and River Forest High School | University of Pennsylvania
Occupation: molecular biologist | university teacher | biologist
Employers: University of Wisconsin–Madison | University of California, Santa Barbara
Awards Received: Albany Medical Center Prize | King Faisal International Prize in Medicine | Massry Prize
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 December 20, 1958
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on December 20, 2025 | Secondary Progressions for December 20, 2025 |
|---|---|---|---|
| Sun | 28 Sagittarius 21 | 29 Sagittarius 6 | 6 Pisces 23 |
| Moon | 28 Aries 14 | 6 Capricorn 40 | 8 Libra 1 |
| Mercury | 9 Sagittarius 26 | 11 Sagittarius 55 | 16 Pisces 10 |
| Venus | 7 Capricorn 55 | 25 Sagittarius 3 | 1 Aries 36 |
| Mars | 16 Taurus 36 | 4 Capricorn 6 | 6 Gemini 57 |
| Jupiter | 21 Scorpio 43 | 22 Cancer 45 | 1 Sagittarius 10 |
| Saturn | 28 Sagittarius 29 | 25 Pisces 31 | 5 Capricorn 26 |
| Uranus | 16 Leo 1 | 28 Taurus 18 | 13 Leo 24 |
| Neptune | 6 Scorpio 17 | 29 Pisces 23 | 6 Scorpio 51 |
| Pluto | 4 Virgo 10 | 2 Aquarius 23 | 2 Virgo 52 |
| Rahu | 18 Libra 38 | 12 Pisces 45 | 15 Libra 6 |
| Ketu | 18 Aries 38 | 12 Virgo 45 | 15 Aries 6 |
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.James Thomson's 2025 Transits to Natal Planets
- Saturn sextile Mars
Exact: 31 January, 2025 - Mars square Rahu
Exact: 12 March, 2025 - Jupiter trine Rahu
Exact: 21 April, 2025 - Saturn square Sun
Exact: 11 May, 2025 - Saturn square Saturn
Exact: 11 May, 2025 - Jupiter opposition Sun
Exact: 31 May, 2025 - Jupiter opposition Saturn
Exact: 31 May, 2025 - Mars aspects Ketu
Exact: 20 July, 2025 - Jupiter opposition Venus
Exact: 20 July, 2025 - Mars square Venus
Exact: 19 August, 2025 - Saturn square Saturn
Exact: 08 September, 2025 - Saturn square Sun
Exact: 18 September, 2025 - Mars opposition Moon
Exact: 18 September, 2025 - Jupiter trine Jupiter
Exact: 28 September, 2025 - Mars conjunction Mercury
Exact: 17 November, 2025
