SUNSET: 
10
For the last few weeks, countless numbers of the world’s 7 billion people watched the western evening sky as the two brightest planets, Venus and Jupiter, edged closer and closer to one another. Last night, June 30th, they reached their least separation: 0.3° apart (at the time of twilight for the Americas).
But this celestial dance is far from over. Tonight Venus and Jupiter will still be only about 0.6° apart, as seen from the Americas, and 1.0° tomorrow night. Then they start to say goodbye and will journey apart as they sink deeper into the afterglow of sunset throughout July.
We’ve been lavished with lovely photos from our readers and thought we’d share a few below. Check out our online Photo Gallery to see them all, and submit your own.
Enjoy the show, both here and by eye outside!
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About Anne McGovern
Anne is the 2015 summer Editorial Intern at Sky & Telescope and a graduate student in Science and Medical Writing at Johns Hopkins University. She is sustained by science and literature, and loves to travel the world.
Comments
July 1, 2015 at 9:29 pm
https://m.flickr.com/#/photos/cwchin/19108875969/
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July 2, 2015 at 11:06 am
In looking at photographs of the conjunction from around the world taken on June 30th, I've noticed that the relative positions of Jupiter and Venus are different. From Los Angeles, Jupiter appeared in the One O'clock position vis a vis Venus; however in other photos from other locals it appears at the 11 O'clock position. What is the reason for the apparent difference in relative position? Considering the distances to Venus and Jupiter from Earth and the relatively small distances from the viewer's perspective on Earth, it is hard to explain this difference simply by parallax. I'd be very interested in the explanation of this phenomenon.
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July 6, 2015 at 1:30 am
They are taken on different days.
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Richard-Peterson
July 3, 2015 at 10:54 pm
Garyt, I think the photo from sel3ulba is probably rotated 90 degrees. It's hard to tell since there isn't anything else in the photo to refer to but that is the simplest explanation.
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Ed-Marshall
July 3, 2015 at 11:19 pm
Hi Gary,
Great question! Besides the possibility that the photo was just reversed, the relative position of Venus and Jupiter does depend on your latitude. Since we are all on a round Earth (and our 6 o'clock position is down towards the horizon) this would change the apparent orientation of the the pair. So at the same instance for us in the L. A. area (I'm in North County, San Diego) we get an orientation of 11 o'clock. Someone north of our location would see the pair move towards the 10 o'clock position and the the 9 o'clock position the farther north you go. Areas south of our 34 and 33 degree north latitude positions would see the pair move towards the 12 o'clock and then eventually to the 1 o'clock position. The photos from Malaysia and Iran are farther south than we are in So. Cal. This just happens because someone else's 6 o'clock position is different from ours -- even though everyone's "down" is towards the center of the Earth.) I've often looked at a setting full Moon, in which the "Man on the Moon" face is tilted over to about the 4 or 5 o'clock position, and then realizing that the rising full Moon for someone in Asia would see the "Man on the Moon" face oriented to roughly the 12 o'clock position at that same instant. Interesting huh? So parallax doesn't really play into it, it's just a question of Earthly orientation. I hope this helps! --Ed Marshall San Marcos, CA.
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Karsten Bomholt
July 4, 2015 at 3:20 am
Gary Tenzer: Venus was moving so fast in comparison to Jupiter, that the relative position changed in a matter of hours. The difference between the images is due to the fact, that they are photographed at different times.
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July 4, 2015 at 11:04 pm
Karsten, Jupiter moves through our sky faster than Venus.
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Karsten Bomholt
July 6, 2015 at 1:09 am
Jupiter uses 12 years to orbit around the Sun. It must therefore spend about one year in each of the Zodiacal constellations. Venus is always seen near the Sun, and as the Sun appears to move through all the Zodiacal constellations in one year - equivalent to about one month in each constellation - Venus is obviously moving similar quickly. Venus moves faster than Jupiter, because it orbits closer to the Sun (Kepler's Laws).
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andy
July 4, 2015 at 5:35 am
My photo of the pairing taken in the UK consists of 3 combined short exposures.
https://onedrive.live.com/redir?resid=950831DD56DCEB87!1026&authkey=!ALCFdyiCu7T6PAA&v=3&ithint=photo%2cjpg
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July 8, 2015 at 10:33 pm
Photos of the Venus-Jupiter Conjunction very good. It is very amazing. Thanks to photographer
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