As seen from Earth, the sun travels in front of the constellation Gemini the Twins from about June 21 to July 20
At yesterday’s solstice (June 21, 2017 at 4:24 UTC), the sun was in front of the constellation Taurus the Bull. On June 21, 2017, at around 15:00 UTC, the sun moves out of the constellation Taurus and into the constellation Gemini the Twins. In other words, the sun on this June solstice shines very close to the Taurus-Gemini border.
Relative to the backdrop stars of the zodiac, the sun on the solstice always appears a tiny bit westward of the previous year’s solstice sun.
For instance, in the year 1989, the sun was in front of the constellation Gemini on the June solstice. Then one year later, in 1990, the June solstice sun was in front of the constellation Taurus, the constellation to the immediate west of Gemini. The sun on the June solstice will continue to shine in front of Taurus until the year 4609, when the June solstice sun will finally move into the constellation Aries, the constellation to the immediate west of Taurus.
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Sign versus constellation
Please keep in mind that we’re talking about constellations – not signs – of the zodiac.
By definition, the sun occupies the first point of (the sign) Cancer on the June solstice, irrespective of which constellation backdrops the sun at this time. Also, the sun reaches the first point of (the sign) Leo when it resides 30o east of the June solstice point along the ecliptic – irrespective of which constellation backdrops the sun.
Signs are fixed relative to the solstice and equinox points. On the other hand, the solstice and equinox points slowly but surely move westward relative to the zodiacal constellations.
The solstice and equinox points go full circle through the constellations of the zodiac in about 26,000 years.
Bottom line: The sun reaches the first point of Cancer on the June 21 solstice, then moves into the constellation Gemini on June 21, at about 15:00 UTC.
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As seen from Earth, the sun travels in front of the constellation Gemini the Twins from about June 21 to July 20
At yesterday’s solstice (June 21, 2017 at 4:24 UTC), the sun was in front of the constellation Taurus the Bull. On June 21, 2017, at around 15:00 UTC, the sun moves out of the constellation Taurus and into the constellation Gemini the Twins. In other words, the sun on this June solstice shines very close to the Taurus-Gemini border.
Relative to the backdrop stars of the zodiac, the sun on the solstice always appears a tiny bit westward of the previous year’s solstice sun.
For instance, in the year 1989, the sun was in front of the constellation Gemini on the June solstice. Then one year later, in 1990, the June solstice sun was in front of the constellation Taurus, the constellation to the immediate west of Gemini. The sun on the June solstice will continue to shine in front of Taurus until the year 4609, when the June solstice sun will finally move into the constellation Aries, the constellation to the immediate west of Taurus.
Enjoying EarthSky so far? Sign up for our free daily newsletter today!
Sign versus constellation
Please keep in mind that we’re talking about constellations – not signs – of the zodiac.
By definition, the sun occupies the first point of (the sign) Cancer on the June solstice, irrespective of which constellation backdrops the sun at this time. Also, the sun reaches the first point of (the sign) Leo when it resides 30o east of the June solstice point along the ecliptic – irrespective of which constellation backdrops the sun.
Signs are fixed relative to the solstice and equinox points. On the other hand, the solstice and equinox points slowly but surely move westward relative to the zodiacal constellations.
The solstice and equinox points go full circle through the constellations of the zodiac in about 26,000 years.
Bottom line: The sun reaches the first point of Cancer on the June 21 solstice, then moves into the constellation Gemini on June 21, at about 15:00 UTC.
EarthSky astronomy kits are perfect for beginners. Order today from the EarthSky store
Donate: Your support means the world to us
from EarthSky http://ift.tt/2rSEofN
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