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Bob Riddle

@currentsky.bsky.social

320 followers 110 following 290 posts

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

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Bob Riddle @currentsky.bsky.social · 1d

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

Fly over Xanthe Terra with Mars Express

YouTube video by European Space Agency, ESA

www.youtube.com

Bob Riddle @currentsky.bsky.social · 2d

Check out my latest post about comet c2025 A6 (Lemmon).

starwalk.substack.com/p/a-comet-an...

A Comet & the Full Moon

Measuring the comets movement - despite the Moon!

starwalk.substack.com

Bob Riddle @currentsky.bsky.social · 7d

Check out my latest essay.
starwalk.substack.com/p/the-crew-h...

The Crew Hits the Road to South Dakota

A road trip to Mt Rushmore and the Crazy Horse Memorial with Heidi, Monty, and Sam

starwalk.substack.com

Bob Riddle @currentsky.bsky.social · 7d

The October issue of Qué tal in the Current Skies is now available online at https:currentsky.com.
Several conjunctions, the Orionid Meteor Shower, and the brightening of Comet C2025 A6 (Lemmon)are on the docket for this month.

Bob Riddle @currentsky.bsky.social · 10d

Say good morning to Comet C/2025 A6 (Lemmon). Currently located in the constellation of Lynx in the morning skies.
Closest approach to Earth will be on October 21, 2025.

This is a composite picture of two 10-minute exposures of the comet taken about 1 hour apart this morning.

Bob Riddle @currentsky.bsky.social · 18d

My latest Essay on Substack is about the September Equinox.

starwalk.substack.com/p/the-septem...

The September Equinox

Just another day, all things being equal.

starwalk.substack.com

Bob Riddle @currentsky.bsky.social · 19d

Sometimes getting up early has its benefits. This is one of mine!

Bob Riddle @currentsky.bsky.social · 20d

Friday morning, the 19th, look for the thin waning crescent Moon to be near Venus and the star Regulus, the heart of the Lion.
This will be a great binocular viewing opportunity.

Bob Riddle @currentsky.bsky.social · 22d

My latest essay about Big Bend National Park.

starwalk.substack.com/p/the-crew-h...

The Crew Hits the Road to Big Bend National Park

A road trip, with fond memories, to Big Bend NP with Heidi, Monty, and Sam

starwalk.substack.com

Bob Riddle @currentsky.bsky.social · 22d

The morning sky tomorrow.

Bob Riddle @currentsky.bsky.social · 24d

nationaltoday.com/national-hug...

Bob Riddle @currentsky.bsky.social · 25d

The Crew has their Boarding Pass from the Artemis Mission

Bob Riddle @currentsky.bsky.social · 27d

Send your name along with the Artemis II mission.
www3.nasa.gov/send-your-na...

NASA: Artemis

Artemis is the name of NASA's program to return astronauts to the lunar surface. We are going forward to the Moon to stay.

www3.nasa.gov

Bob Riddle @currentsky.bsky.social · Sep 8

Here's my latest SubStack Essay.

There's More That Met My Eye

What My Eyes or Your Eyes See is not What My Vespera 2 Imager Sees

starwalk.substack.com

Bob Riddle @currentsky.bsky.social · Sep 7

The Lagoon Nebula, aka M8, is a cloud of gas and dust in the constellation Sagittarius the Archer about 4000-5000 light years distant. Within M-8 is NGC6530 an open star cluster where new stars are forming, and ionizing the surrounding gas, causing it to glow into the colors we see.

Bob Riddle @currentsky.bsky.social · Sep 5

The Crew asked about the sky in São Paulo this evening.
You can see Scorpius and Sagittarius high above their southern horizon where here in KC it is just above the horizon. see if you can find the Southern Cross.

Bob Riddle @currentsky.bsky.social · Sep 4

The sky this evening, and the sky tomorrow morning
When you observe the Milky Way from mid-northern latitudes, you see it as a band of light across the sky stretching overhead from north to south.
In the evening, looking south, is the rotational center of the Milky Way.