Scott Kardel aka Palomar Skies

Scott Kardel aka Palomar Skies

@palomarskies.bsky.social

Associate professor of astronomy at Palomar College, user of smart telescopes. 🔭 Blog: http://visiblesuns.blogspot.com/

3,847 Followers 769 Following 3,108 Posts Joined Aug 2023
1 day ago
Starshot Is a Success (Part II) | Centauri Dreams

Wrapping up Starshot's success at Phase I with a detailed look at the advances made in materials, laser array physics and communications, much of it available in journals from the Starshot scientists, and more papers from other sources coming. www.centauri-dreams.org/2026/03/10/s...

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1 day ago
Official map from NOAA depicting the relative rank of winter 2025-2026 temperatures at a county level across the contiguous U.S. Many counties in the western and central U.S. are depicted in dark red color, signifying record-warmest winter. All other counties in the west and central U.S. are depicted in dark orange colors, signifying a "near record warm" rank.

The official NOAA stats out this week confirm that winter 2025-26 was the warmest on record across a huge portion of the western and central U.S., which has contributed to extremely low mountain snowpack & worsened the CO River crisis. Meanwhile, record March heat is in forecast.

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1 day ago
This is an image of the star WOH G64, taken by the GRAVITY instrument on the European Southern Observatory’s Very Large Telescope Interferometer (ESO’s VLTI). This is the first close-up picture of a star outside our own galaxy, the Milky Way. The star is located in the Large Magellanic Cloud, over 160 000 light-years away. The bright oval at the centre of this image is a dusty cocoon that enshrouds the star. A fainter elliptical ring around it could be the inner rim of a dusty torus, but more observations are needed to confirm this feature.

Astronomers watched as the star WOH G64 transformed from a red supergiant into a rare, shortlived yellow supergiant star...in just 12 years.

It's a dramatic, rapid instability in a star that is rapidly headed toward a cataclysmic supernova explosion. 🧪🔭

theconversation.com/one-of-the-b...

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2 days ago

Post your favorite “Lord of the Rings” character. Wrong answers only.

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2 days ago

Nice!

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2 days ago
Preview
Some Extremophiles Could Survive an Asteroid Impact on Mars, and the Dangerous Journey to Earth Panspermia is the idea that life was spread from world to world somehow. New research shows that one type of Earthly extremophile can survive the extremely high pressure from asteroid impacts on Mars,...

Some Extremophiles Could Survive an Asteroid Impact on Mars, and the Dangerous Journey to Earth www.universetoday.com/articles/som...

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2 days ago

I was able to do my renewal online. I took a photo of me against a tan wall and then stripped out the background to make it all white.

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3 days ago

Bring it! 🖖

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3 days ago
Preview
One Deck to Rule Them All If you properly shuffle a standard deck of 52 playing cards then the chances are that the arrangement of cards you are now holding has never existed before in the history of the human race and likely wont again.

One Deck to Rule Them All

If you properly shuffle a standard deck of 52 playing cards then the chances are that the arrangement of cards you are now holding has never existed before in the history of the human race and likely wont again.

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3 days ago
Tyrannosaurus Standup - The Oatmeal

Here's what to blame for the comet idea hanging around for so long: theoatmeal.com/comics/tyran...

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4 days ago

It does freak me out. Twice a year.

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5 days ago
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Just keep driving.

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4 days ago

Yes, please.

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4 days ago

You are wise.

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4 days ago
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This is a real time view of what my clock is doing right now. It is automatically springing forward like crazy & seven hours early.

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4 days ago

Wow!!

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4 days ago

Down with DST!

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5 days ago
A vibrant infrared image of Jupiter. The planet is characterized by thick, horizontal blue and orange bands. Two prominent, glowing white oval storms-the Great Red Spot and a smaller companion-are positioned in the lower hemisphere. The poles and the edges of the planet glow with a saturated red-orange hue, highlighting the heat and atmospheric depth of the gas giant.

This week’s image is of our neighbor Jupiter! Gemini North’s NIRI with adaptive optics captured this IR view of Jupiter, highlighting features like the Great Red Spot in bluer tones than in optical wavelengths. Check out the 🧵 for more papers on hot Jupiters!

#Astronomy

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4 days ago

President Lula of Brazil: “My message to the US, Israel and Iran is simple: the world is tired of your conflicts. Diplomacy is not a sign of weakness; it is the highest expression of human intelligence. Those who die are not the ones signing the attack orders; those who die are the innocents.”

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4 days ago

🥇

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6 days ago

🙏 Yes, please.

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6 days ago
Action Alert: Provide Input to the FCC on Proposed Satellite Systems | American Astronomical Society

The FCC has opened public comments for a couple of different proposed satellite systems, both of which have a high likelihood of significantly degrading our ability to experience the night sky. More details from @aas.org here: 🧪

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6 days ago

Yes, I have them as well and I love the Mars topographical globe.

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1 week ago

Awesome.

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1 week ago

Expected, but Zowie! 😱

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1 week ago
The red colour in the umbra is from the light of all the sunsets and sunrises going on around the Earth. 

However, the boundary between the red umbra and bright part of the Moon in the penumbra appears a pale blue-pink or magenta colour, from the effect of ozone in the upper atmosphere of Earth absorbing red light. 

The Moon passed across the southern half of the umbra at this eclipse so the southern limb of the Moon always remained brighter than the northern limb of the Moon. 

This was from home in southern Alberta, with images taken between 3:35 am to 4:05 am MST, Tuesday, March 3, 2026, on a relatively mild winter morning. 

Incoming clouds prevented a full sequence during totality and during the partial phases after totality. I had to be happy with getting this set!

Technical:
All but the final image of totality are multi-exposure blends, each image being a blend of short to long exposures, typically 1/25-second to 10 seconds, to preserve the dynamic range between the still directly sunlit side of the Moon and the dark side in the umbra and lit by red sunlight filtering through Earth's atmosphere. 

All were with the SvBony Mk127mm Maksutov-Cassegrain telescope at its f/11.8 f-ratio for 1500mm of focal length. The camera was the Canon Ra at ISO 100 to 400. 

The original is 20,500 by 4,480 pixels.

This is the total eclipse of the Moon of March 3, 2026, in a sequence over 30 minutes, through the mid-partial phase to totality.

It shows the progression from left to right of the Moon entering the dark inner umbral shadow of the Earth and turning more and more red. Details in Alt Text.

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1 week ago

Yes, driving in LA is the worst.

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1 week ago

Truth.

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1 week ago

Ugh. Helium 3. It will be a boondoggle, or should I say Moondoggle.

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1 week ago

Yeah, that’s the California curse.

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