07/03/2020 – Ephemeris – Grand Traverse Astronomical Society virtual meeting tonight
This is Bob Moler with Ephemeris for Friday, July 3rd. Today the Sun will be up for 15 hours and 28 minutes, setting at 9:31, and it will rise tomorrow at 6:03. The Moon, 2 days before full, will set at 5:18 tomorrow morning.
The Grand Traverse Astronomical Society will host a virtual meeting tonight at 8 pm. It is via the Zoom app for the smart phone, tablet or going to zoom.us with a browser on your computer. Instructions and a link can be found on the society’s website gtastro.org. With the Sun out so long now, I will be giving the presentation: The Sun and the Earth, about the relationship between the two bodies. I’ll talk about all the energy the Sun puts out and how the atmosphere protects us from some of it. We’ll look at the cause of the seasons, and why, in early July as summer is getting going the Earth is at its farthest from the Sun, and what effect that has on the our summers. And lots more.
07/02/2020 – Ephemeris – The star Deneb in Cygnus the swan
This is Ephemeris for Thursday, July 2nd. Today the Sun will be up for 15 hours and 29 minutes, setting at 9:31, and it will rise tomorrow at 6:02. The Moon, 3 days before full, will set at 4:29 tomorrow morning.
This evening when it gets dark enough the bright star Deneb in Cygnus the swan will be high in the east-northeast. Deneb is the dimmest star of the summer triangle. Of the other stars of the triangle, Vega is higher in the east, while Altair is lower in the southeast. Deneb’s apparent magnitude, or brightness as seen from Earth, makes it the dimmest of the three bright stars. Its vast distance of possibly 2,600 light years is over 100 times the distance of Vega. If brought as close as Vega, Deneb would be as bright at least as the quarter moon. It is possibly as bright as 200 thousand Suns; and a huge star, possibly as large in diameter as the orbit of the Earth. For all this it is only 19 or so times the mass of the Sun.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
07/01/2020 – Ephemeris – Let’s look at the naked-eye planets for this week
This is Ephemeris for Wednesday, July 1st. Today the Sun will be up for 15 hours and 30 minutes, setting at 9:31, and it will rise tomorrow at 6:01. The Moon, 3 days past first quarter, will set at 3:49 tomorrow morning.
Let’s look at the naked-eye planets for this week. Jupiter now rises in the evening, tonight it’s at 10:08 pm in the east-southeast. Saturn will rise 19 minutes later at 10:27 pm right behind Jupiter. Mars, is stretching its lead left of Saturn and will rise at 1:18 am in the east. Its now down to 75.4 million miles (121.5 million km) away, as the Earth slowly overtakes it at the rate of about 4 million miles (6.4 million km) a week. Jupiter and Saturn will be hanging out between Sagittarius and Capricornus this year while Mars is slowing its rapid eastward motion now two constellations over in Pisces. Finally, Venus will rise at 4:05 am in the east-northeast in the twilight as our Morning Star.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Almost evening planets Jupiter and Saturn, and the Moon at 11 pm on July 1st, 2020. Both Jupiter and Saturn are still officially morning planets since they rise after sunset. Click on the image to enlarge. Created using Stellarium.

The gibbous Moon as it might appear this evening, July 1st, 2020, in a pair of binoculars or small telescope. Created using Stellarium.

The morning planets, including Jupiter and Saturn which are also visible in the late evening. Click on the image to enlarge. Created using Stellarium.

The planets as seen in a telescope (north up) with the same magnification tomorrow morning July 2, 2020. Apparent diameters: Jupiter, 47.34″; Saturn, 18.37″, rings, 42.79″, Mars, 11.57″, and Venus 42.15″. Mars also displays an enlargement showing surface detail. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).

Planets and the Moon at sunset and sunrise of a single night starting with sunset on the right on July 1, 2020. The night ends on the left with sunrise on the 2nd. The closeness of Jupiter and Saturn in the morning sky unfortunately overlays planets and labels. Click on the image to enlarge. Created using my LookingUp program.
06/30/2020 – Ephemeris – Previewing the skies of July 2020
This is Ephemeris for Tuesday, June 30th. Today the Sun will be up for 15 hours and 31 minutes, setting at 9:32, and it will rise tomorrow at 6:01. The Moon, 2 days past first quarter, will set at 3:15 tomorrow morning.
Lets preview July’s skies. The Sun, having reached its northern solstice, is beginning to slide southward again, at first imperceptibly, then with greater speed. The daylight hours will decrease from 15 hours and 30 minutes tomorrow to 14 hours 40 minutes at month’s end. The daylight hours will be slightly shorter south of Interlochen, and slightly longer to the north. The altitude of the Sun at local noon, when it is due south will decrease from 68 degrees tomorrow to 63 degrees at month’s end. Despite the warmth, the Earth will reach its greatest distance from the Sun on Saturday the 4th. Both Jupiter and Saturn reach opposition from the Sun this month and officially become evening planets.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
July Evening Star Chart

Star Chart for July 2020 (11 p.m. EDT July 15, 2019). Created using my LookingUp program. Click on image to enlarge.
The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 4:30 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.
Note the chart times are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th.
July Morning Star Chart

Star Chart for July mornings 2020 (4:30 a.m. EDT July 15, 2019). Created using my LookingUp program. Click on image to enlarge.
For a list of constellation names to go with the abbreviations click here.
- Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
- Leaky dipper drips on Leo.
- Follow the arc of the handle of the Big Dipper to the star Arcturus, and
- Extend like a spike to Spica.
- The Summer Triangle is in red.
- DAqR is the radiant of the South Delta Aquariid meteor shower (Peaks on the 27th)
Twilight Limits, Nautical and Astronomical
| EDT | |||||||
| Morning twilight | Evening twilight | Dark night | Moon | ||||
| Date | Astro. | Nautical | Nautical | Astro. | Start | End | Illum. |
| 2020-07-01 | 3h38m | 4h41m | 23h00m | 0h03m | 3h15m | 3h38m | 0.88 |
| 2020-07-02 | 3h39m | 4h42m | 22h59m | 0h02m | – | – | 0.95 |
| 2020-07-03 | 3h40m | 4h43m | 22h59m | 0h01m | – | – | 0.95 |
| 2020-07-04 | 3h42m | 4h43m | 22h58m | 0h00m | – | – | 0.99 |
| 2020-07-05 | 3h43m | 4h44m | 22h58m | 23h59m | – | – | 1 |
| 2020-07-06 | 3h44m | 4h45m | 22h57m | 23h58m | – | – | 0.99 |
| 2020-07-07 | 3h46m | 4h46m | 22h56m | 23h57m | – | – | 0.95 |
| 2020-07-08 | 3h47m | 4h47m | 22h56m | 23h56m | 23h56m | – | 0.89 |
| 2020-07-09 | 3h49m | 4h48m | 22h55m | 23h54m | 23h54m | 0h05m | 0.82 |
| 2020-07-10 | 3h50m | 4h49m | 22h54m | 23h53m | 23h53m | 0h30m | 0.74 |
| 2020-07-11 | 3h52m | 4h51m | 22h53m | 23h52m | 23h52m | 0h52m | 0.65 |
| 2020-07-12 | 3h54m | 4h52m | 22h52m | 23h50m | 23h50m | 1h13m | 0.55 |
| 2020-07-13 | 3h55m | 4h53m | 22h51m | 23h49m | 23h49m | 1h33m | 0.45 |
| 2020-07-14 | 3h57m | 4h54m | 22h50m | 23h47m | 23h47m | 1h55m | 0.36 |
| 2020-07-15 | 3h59m | 4h55m | 22h49m | 23h46m | 23h46m | 2h19m | 0.26 |
| 2020-07-16 | 4h01m | 4h57m | 22h48m | 23h44m | 23h44m | 2h47m | 0.18 |
| 2020-07-17 | 4h02m | 4h58m | 22h47m | 23h43m | 23h43m | 3h20m | 0.11 |
| 2020-07-18 | 4h04m | 4h59m | 22h46m | 23h41m | 23h41m | 4h01m | 0.05 |
| 2020-07-19 | 4h06m | 5h01m | 22h45m | 23h39m | 23h39m | 4h06m | 0.01 |
| 2020-07-20 | 4h08m | 5h02m | 22h44m | 23h38m | 23h38m | 4h08m | 0 |
| 2020-07-21 | 4h10m | 5h03m | 22h42m | 23h36m | 23h36m | 4h10m | 0.01 |
| 2020-07-22 | 4h12m | 5h05m | 22h41m | 23h34m | 23h34m | 4h12m | 0.06 |
| 2020-07-23 | 4h14m | 5h06m | 22h40m | 23h32m | 23h32m | 4h14m | 0.12 |
| 2020-07-24 | 4h16m | 5h08m | 22h38m | 23h30m | 23h58m | 4h16m | 0.21 |
| 2020-07-25 | 4h17m | 5h09m | 22h37m | 23h28m | – | 4h17m | 0.32 |
| 2020-07-26 | 4h19m | 5h10m | 22h35m | 23h26m | 0h24m | 4h19m | 0.44 |
| 2020-07-27 | 4h21m | 5h12m | 22h34m | 23h24m | 0h50m | 4h21m | 0.56 |
| 2020-07-28 | 4h23m | 5h13m | 22h32m | 23h22m | 1h18m | 4h23m | 0.67 |
| 2020-07-29 | 4h25m | 5h15m | 22h31m | 23h20m | 1h49m | 4h25m | 0.77 |
| 2020-07-30 | 4h27m | 5h16m | 22h29m | 23h18m | 2h27m | 4h27m | 0.86 |
| 2020-07-31 | 4h29m | 5h18m | 22h28m | 23h16m | 3h11m | 4h29m | 0.93 |
Twilight calendar was generated using Cartes du Ciel (Sky Charts).
See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.
NASA Calendar of Planetary Events
Date Time Event
Jul 1 We Venus: 34.3° W
3 Fr 11:18 pm Moon Descending Node
4 Sa 10:59 am Aphelion: 1.0167 AU
4 Sa 09:37 pm Moon South Dec.: 24.1° S
5 Su 12:30 am Penumbral Lunar Eclipse
(Americas, sw Europe, Africa)
5 Su 12:44 am Full Moon
5 Su 05:37 pm Moon-Jupiter: 1.9° N
6 Mo 04:45 am Moon-Saturn: 2.6° N
11 Sa 08:17 am Venus-Aldebaran: 1° N
11 Sa 03:36 pm Moon-Mars: 2.2° N
12 Su 03:27 pm Moon Apogee: 404200 km
12 Su 07:29 pm Last Quarter
14 Tu 03:03 am Jupiter Opposition
17 Fr 03:26 am Moon-Venus: 3.4° S
18 Sa 08:33 am Moon Ascending Node
19 Su 07:51 am Moon North Dec.: 24.1° N
20 Mo 01:33 pm New Moon
20 Mo 05:33 pm Saturn Opposition
22 We 10:59 am Mercury Greatest Elongation: 20.1° W
25 Sa 12:54 am Moon Perigee: 368400 km
27 Mo 08:32 am First Quarter
27 Mo 05:08 pm Delta Aquarid Meteor Shower: ZHR = 20
31 Fr 05:32 am Moon Descending Node
Aug 1 Sa Venus: 45.2° W
All event times are given for UTC-4 hr: Eastern Daylight Saving Time.
Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.
If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.
Sun and Moon Rising and Setting Events
LU Ephemeris of Sky Events for Interlochen/TC July, 2020 Local time zone: EDT +-----------------------------------------------------------------------+ | DATE | SUN SUN DAYLIGHT| TWILIGHT* |MOON RISE OR ILLUM | | | RISE SET HOURS | END START |PHASE SET** TIME FRACTN| +=======================================================================+ |Wed 1| 06:01a 09:31p 15:30 | 10:57p 04:35a | Set 03:49a 87%| |Thu 2| 06:01a 09:31p 15:29 | 10:56p 04:36a | Set 04:29a 94%| |Fri 3| 06:02a 09:31p 15:28 | 10:56p 04:37a | Set 05:18a 98%| |Sat 4| 06:03a 09:31p 15:27 | 10:55p 04:38a | Set 06:15a 100%| +------+-----------------------+----------------+-----------------------+ |Sun 5| 06:03a 09:30p 15:26 | 10:55p 04:39a |Full Rise 10:19p 99%| |Mon 6| 06:04a 09:30p 15:25 | 10:54p 04:40a | Rise 11:02p 96%| |Tue 7| 06:05a 09:29p 15:24 | 10:53p 04:41a | Rise 11:37p 91%| |Wed 8| 06:06a 09:29p 15:23 | 10:53p 04:42a | Rise 12:05a 85%| |Thu 9| 06:06a 09:29p 15:22 | 10:52p 04:43a | Rise 12:30a 77%| |Fri 10| 06:07a 09:28p 15:20 | 10:51p 04:44a | Rise 12:52a 68%| |Sat 11| 06:08a 09:27p 15:19 | 10:50p 04:45a | Rise 01:12a 59%| +------+-----------------------+----------------+-----------------------+ |Sun 12| 06:09a 09:27p 15:17 | 10:49p 04:46a |L Qtr Rise 01:33a 50%| |Mon 13| 06:10a 09:26p 15:16 | 10:48p 04:47a | Rise 01:55a 40%| |Tue 14| 06:11a 09:25p 15:14 | 10:47p 04:49a | Rise 02:19a 31%| |Wed 15| 06:11a 09:25p 15:13 | 10:46p 04:50a | Rise 02:47a 23%| |Thu 16| 06:12a 09:24p 15:11 | 10:45p 04:51a | Rise 03:20a 15%| |Fri 17| 06:13a 09:23p 15:09 | 10:44p 04:52a | Rise 04:01a 8%| |Sat 18| 06:14a 09:22p 15:08 | 10:43p 04:54a | Rise 04:52a 4%| +------+-----------------------+----------------+-----------------------+ |Sun 19| 06:15a 09:21p 15:06 | 10:41p 04:55a | Rise 05:52a 1%| |Mon 20| 06:16a 09:21p 15:04 | 10:40p 04:56a |New Set 09:45p 0%| |Tue 21| 06:17a 09:20p 15:02 | 10:39p 04:58a | Set 10:26p 2%| |Wed 22| 06:18a 09:19p 15:00 | 10:38p 04:59a | Set 11:01p 7%| |Thu 23| 06:19a 09:18p 14:58 | 10:36p 05:00a | Set 11:31p 14%| |Fri 24| 06:20a 09:17p 14:56 | 10:35p 05:02a | Set 11:58p 22%| |Sat 25| 06:21a 09:16p 14:54 | 10:33p 05:03a | Set 12:24a 33%| +------+-----------------------+----------------+-----------------------+ |Sun 26| 06:22a 09:15p 14:52 | 10:32p 05:05a | Set 12:50a 44%| |Mon 27| 06:24a 09:13p 14:49 | 10:30p 05:06a |F Qtr Set 01:18a 55%| |Tue 28| 06:25a 09:12p 14:47 | 10:29p 05:08a | Set 01:49a 67%| |Wed 29| 06:26a 09:11p 14:45 | 10:27p 05:09a | Set 02:27a 77%| |Thu 30| 06:27a 09:10p 14:42 | 10:26p 05:11a | Set 03:11a 85%| |Fri 31| 06:28a 09:09p 14:40 | 10:24p 05:12a | Set 04:04a 92%| +-----------------------------------------------------------------------+ * Nautical Twilight ** Moonrise or moonset, whichever occurs between sunrise and sunset
06/29/2020 – Vega, brightest star of the Summer Triangle
This is Ephemeris for Monday, June 29th. Today the Sun will be up for 15 hours and 31 minutes, setting at 9:32, and it will rise tomorrow at 6:00. The Moon, 1 day past first quarter, will set at 2:46 tomorrow morning.
Vega is the highest star In the east and brightest star of the Summer Triangle also rising in that direction. It is an important and much studied star, first as a standard for brightness for thr star brightness magnitude scale at magnitude of almost exactly zero. It also has two fields of debris orbiting it. In 1983 the Infrared Astronomy Satellite discovered an excess of infrared radiation coming from the star. It seems now that there are two orbiting rings, one warm, and the other cold orbiting the star. This is somewhat like the two disks the Sun has: The asteroid belt between Mars and Jupiter and the Kuiper belt, beyond Neptune. No planets have been discovered around Vega, but I wouldn’t bet against it.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Vega possesses two debris fields, similar to our own solar system’s asteroid and Kuiper belts. Astronomers continue to hunt for planets orbiting Vega, but as of May 2020 none have been confirmed. More info: bit.ly/VegaSystem Credit: NASA/JPL-Caltech.
06/26/2020 – Ephemeris – The stars known as the Horse and Rider
Jun 26. This is Bob Moler with Ephemeris for Friday, June 26th. Today the Sun will be up for 15 hours and 33 minutes, setting at 9:32, and it will rise tomorrow at 5:59. The Moon, 2 days before first quarter, will set at 1:28 tomorrow morning.
The most interesting star in the Big Dipper is Mizar and its dim companion Alcor. It is the second star from the end of the handle, where the bend in the handle takes place. Folks with good vision can see the dimmer star right next to Mizar. In ancient times it was used as an eye test for visual acuity for warriors. As such it was known as the “Horse and the Rider”. Mizar is second magnitude, in the second rank of star brightness invented by the Greek astronomer Hipparchus in the 2nd century BC. He ranked stars in 6 classes, from first magnitude for the brightest to 6th for the dimmest visible to the naked eye. Alcor comes in at 4th magnitude. It does suffer a bit by being very close to Mizar which is 6 times brighter.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Mizar finder animation for the Big Dipper’s orientation in late June at 11 pm where I live or an hour and a half after sunset. Created using Stellarium and GIMP.

Mizar and Alcor as they might appear in a telescope. Mizar is a binary star in a telescope. The other star in the field is apparently a background star. The brighter star of Mizar is Mizar A, while the dimmer is Mizar B. It turns out that Mizar A and B plus Alcor are all spectroscopic binaries, meaning the companion stars are too close to resolve in telescopes, but whose motion shows up in the spectra of the stars. Mizar and Alcor are around 80 light years away. Created using Stellarium.
06/25/2020 – Ephemeris – The bright star Spica
This is Ephemeris for Thursday, June 25th. Today the Sun will be up for 15 hours and 33 minutes, setting at 9:32, and it will rise tomorrow at 5:58. The Moon, 3 days before first quarter, will set at 12:59 tomorrow morning.
Low in the southwest at 11 p.m. is the bright star Spica which can be found from all the way back overhead to the Big Dipper. Follow the arc of the handle of the Big Dipper to the bright star Arcturus high in the southwest. Then straighten the curve of the arc to a straight spike which points to Spica. Arcturus is much brighter than Spica and has an orange tint to Spica’s bluish hue. In fact Spica is the bluest of the 21 first magnitude stars. That means that it is hot. Actually Spica is really two blue stars orbiting each other in 4 days. Spica is 250 light years away, which is reasonably close. Spica was an important star to the ancient Greeks. One temple was built, and aligned to its setting point.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
06/24/2020 – Ephemeris – Let’s look at the naked-eye planets for this week
This is Bob Moler with Ephemeris for Wednesday, June 24th. Today the Sun will be up for 15 hours and 34 minutes, setting at 9:32, and it will rise tomorrow at 5:58. The Moon, 3 days past new, will set at 12:27 tomorrow morning.
Let’s look at the naked-eye planets for this week. Jupiter now rises in the evening, tonight it’s at 10:42 pm in the east-southeast. Saturn will rise 18 minutes later at 11pm right behind Jupiter. Mars, is stretching its lead left of Saturn and will rise at 1:36 am in the east. Its now down to 83.4 million miles (134.3 million km) away, as the Earth slowly overtakes it at the rate of about 4 million miles (6.4 million km) a week. Jupiter and Saturn will be hanging out between Sagittarius and Capricornus this year while Mars is slowing its rapid eastward motion now two constellations over in Pisces. Finally, Venus will rise at 4:26 am in the east-northeast low in the twilight as our Morning Star.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

The Moon as seen through binoculars or small telescope tonight June 24, 2020. Note earthshine on the night side of the Moon. Created using Stellarium.

Jupiter & Saturn at midnight. Note the Teapot of Sagittarius to the right of Jupiter and the stars of Scorpius including Antares farther right. Click on the image to enlarge. Created using Stellarium.

Four of the five naked-eye planets stretched out on this panorama from northeast to southwest at 5 am tomorrow morning June 25, 2020. Click on the image to enlarge. Created using Stellarium.

The planets as seen in a telescope (north up) with the same magnification tomorrow morning June 25, 2020. Apparent diameters: Jupiter, 46.96″; Saturn, 18.28″, rings, 42.58″, Mars, 10.99″, and Venus 47.10″. Mars also shows an enlargement showing surface detail. The ” symbol means seconds of arc (1/3600th of a degree.) Click on the image to enlarge. Created using Cartes du Ciel (Sky Charts).

Planets and the Moon at sunset and sunrise of a single night starting with sunset on the right on June 24, 2020. The night ends on the left with sunrise on the 25th. The closeness of Jupiter and Saturn in the morning sky unfortunately overlays planets and labels. Click on the image to enlarge. Created using my LookingUp program.
06/23/2020 – Ephemeris – Arcturus: a look at the Sun’s future
This is Ephemeris for Tuesday, June 23rd. Today the Sun will be up for 15 hours and 34 minutes, setting at 9:32, and it will rise tomorrow at 5:58. The Moon, 2 days past new, will set at 11:49 this evening.
Arcturus, a red giant star is about two thirds the way up the sky in the southwest at 11 p.m. It’s one of the earliest stars to appear in twilight, being nearly tied in brightness with Vega, a white star nearly as high in the east. A pointer to Arcturus is the handle of the Big Dipper, following the arc of the handle to Arcturus. Though only 37 light years away, it’s not from around here. It’s passing through the galactic disk from north to south. Arcturus is about 7 billion years old, and is about 8% more massive than our Sun. It appears to be starting its red giant phase, after running out of hydrogen to fuse to helium in its core and is beginning to fuse helium. It’s a preview of coming attractions for our Sun when it gets that old.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
06/22/2020- Ephemeris – Summer has begun
This is Ephemeris for Monday, June 22nd. Today the Sun will be up for 15 hours and 34 minutes, setting at 9:32, and it will rise tomorrow at 5:57. The Moon, 1 day past new, will set at 11:04 this evening.
On Friday’s program I was way too busy with the summer solstice and the annular eclipse in Asia to properly give summer its due, so here goes. Last Saturday the northern end of the Earth’s axis was tilted toward the Sun to its maximum extent, giving the northern hemisphere its most direct sunlight, and the longest daylight hours. North of the arctic circle of 66 ½ degrees latitude got 24 hours of daylight, and the north pole midday in its six months of continuous sunlight. At the south pole it’s literally midnight of its six months night. The northern hemisphere got its greatest amount of heat from the Sun that day, however this part of the Earth is still warming up, so our hottest days average in late July when the shortening daylight hours and the lowering of the Sun in the south can’t maintain the heat anymore and we begin to cool.
The event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Earth’s position at the solstices and equinoxes. This is an not to scale oblique look at the Earth’s orbit, which is nearly circular. The Earth is actually farthest from the Sun on July 4th. Click on the image to enlarge. Credit: ESO (European Southern Observatory which explains the captions in German and English.

Comparing the sun’s path at the summer and winter solstices. This is a stereographic representation of the whole sky which distorts the sky and magnifies the size of the sun’s path near the horizon.




