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Bob Riddle

@currentsky.bsky.social

Semi-Retired Teacher (Earth Science/Planetarium Director-43 yrs.). Column Editor Scope on the Skies, Science Scope Magazine (National Science Teaching Association). NASA Volunteer Educator Since 1985: Cassini Fellow; ISTP;SSEP;SSA. Day or night photography

332 Followers  |  119 Following  |  317 Posts  |  Joined: 08.02.2024  |  1.5767

Latest posts by currentsky.bsky.social on Bluesky


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Lunar Eclipse The Moon in the Earth's Shadow

starwalk.substack.com/p/lunar-ecli...

19.02.2026 21:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Milky Way Galaxy On one of those clear and possibly cold, winter evenings, go outside and look toward the south.

My latest essay on Substack
starwalk.substack.com/p/the-milky-...

17.02.2026 21:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image 16.02.2026 13:09 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Have a sweet day today!

14.02.2026 13:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Be careful today!

13.02.2026 13:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Along the River During the winter months, there is a wealth of celestial objects to observe.

My latest essay on Substack.
starwalk.substack.com/p/along-the-...

10.02.2026 13:49 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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My latest essay on Substack.
starwalk.substack.com/p/groundhog-...

02.02.2026 00:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A High Altitude Animal Encounter On one of our trips to Ecuador, me, our son, and the son of our Ecuador friends spent the day hiking up to around 17000 feet on Volcan Chimborazo, a 20500 foot snow-capped volcano near the city of Gua...

My most recent essay on Substack:

starwalk.substack.com/p/a-high-alt...

01.02.2026 00:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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January 30 - 7pm CDT
A conjunction with the Moon, Jupiter, and the 'Twin' stars.

30.01.2026 14:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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It's International Education Day today, January 24th.
Thank a Teacher for their service.

24.01.2026 14:25 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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The slightly more waxing crescent Moon is moving in on the planet Saturn.

22.01.2026 20:33 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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If the skies are clear enough and the temperature is not too low for your liking then step outside to see the thin waxing crescent over the western horizon.

21.01.2026 21:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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On Top of the World Is there a top or bottom to the Earth?

My latest Substack essay
open.substack.com/pub/starwalk...

20.01.2026 00:28 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Perihelion, Aphelion and the Solstices Earth is closest to the Sun two weeks after the December solstice and farthest from the Sun two weeks after the June Solstice.

Earth closet to the Sun today - known as perihelion.
www.timeanddate.com/astronomy/pe...

02.01.2026 16:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Despite all that's been thrown at me I am still standing!

30.12.2025 22:06 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Watch for the waxing crescent Moon to be near Saturn this evening. Jupiter is still near the Gemini Twins, but rises a little later.

26.12.2025 21:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Not really us. but our wishes for a Merry Christmas are for real from us- Heidi. Sam, Monty, Bob, and Susan.

25.12.2025 00:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Where have I been and why?
2 months ago I had spine surgery that unfortunately didn't go as planned.
Now in a medical rehab facility for rehab and on antibiotics to deal with other complications.
But the Sun still shines and the winter stars and constellations are doing their thing at night.

16.12.2025 02:57 β€” πŸ‘ 11    πŸ” 0    πŸ’¬ 3    πŸ“Œ 0
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The Earth has 2, Maybe 3, Moons One is our full-time Moon; the others are a 'quasi-satellite' or are they a Mini-Moon?

Here's my latest essay on Substack.

18.11.2025 14:04 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Storms from the Sun Incoming!!!

Here's my latest Essay, 'Storms from the Sun', on Substack.

starwalk.substack.com/p/storms-fro...

14.11.2025 13:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Be sure to thank a Veteran. We did it for you.

11.11.2025 13:31 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Something to share. Like the saying goes, "It's our home, our only home."
NASA’s Juno spacecraft during its Earth flyby to capture this Oct. 9. 2013
Key details:
β€’ Distance: Approximately 4,000 km from Earth.
β€’ Region visible: South America and Antarctica.
β€’ Source: NASA’s Juno mission.

09.11.2025 16:19 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A late night get together! Should be fun, the Twins are here!!

08.11.2025 21:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Been hospitalized for the last 3 weeks
However the universe didn't take a break.
If you have a clear look toward the west this evening or tomorrow right around sunset you may able to see Mercury and Mars in a fairly close conjunction.

07.11.2025 16:40 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The crew says go Chiefs, and let's get Bob discharged from the hospital so he can come and see us, Sue, and watch the Chiefs win.

19.10.2025 14:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Here's a short video showing the path of Comet C/2025 A6 (Lemmon) from October 15-23. Set at 1-day intervals at 8pm CDT.

15.10.2025 13:21 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Messier 8, Messier 20, and Messier 21 are all located in the constellation Sagittarius.
M8, aka the Lagoon Nebula, is an emission nebula.
M20, aka The Trifid Nebula, is three different types of nebulae: emission, reflection, and dark nebula.
M21, aka NGC 6531, is an open star cluster.

12.10.2025 13:33 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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It's Earth Science Week and the Crew says, "Love your Mother!"
Here's an interesting article about 'Mother Earth'.
"What a Wonderful World! 75 Absolutely Fascinating Facts About Planet Earth"

bit.ly/4n4s9mV

12.10.2025 12:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Here’s my latest essay - about comets and information about C/2025 A^ (Lemmon) and its appearance in the evening skies now.
starwalk.substack.com/p/chasing-ba...

09.10.2025 17:54 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Fly over Xanthe Terra with Mars Express
YouTube video by European Space Agency, ESA Fly over Xanthe Terra with Mars Express

Lunch Time?
Take a mellow flight across some of Martian terrain compliments of the ESA.
www.youtube.com/watch?v=6E6C...

07.10.2025 16:36 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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