Did you know that #Roman road design included #safety features?

In the ruins of #Pompeii, you'll notice small white stones interspersed with the large paving ones along the extensive roads.

Those white #stones are 'cats eyes', i.e. gems that have a single line of inclusion of crystals of another mineral inside.

Upon light reflective on them (from the #moon), they enable the walker to see that they are still on the right path!

https://youtu.be/74n6TgXbgAQ?si=56oPfp7mG1ENxflN

#history

Ok I'll post the aurora photos soon, but look at this photo!

A Heron tries to fish under the auroral glow.

#aurora #heron #birds #moon

Just before moonset - an infrared view of the one-day old crescent moon next to the Pleiades in the evening sky.

The moon's elevation was only about 1/2 degree above a sea level horizon. (The distant mountain range is 45 miles away, and a few thousand feet lower than the observing location. This means the mountains are at a negative elevation.)

The moon does not appear to be a circle, Instead, it's squashed flat because of atmospheric refraction.

Haze and dust layers are prominent.

Planetarium software says that I was shooting through about 30 airmasses for this image.

Taken from the mountains of southern New Mexico at an elevation of 9,000 feet.

I slightly boosted the visibility of the Pleiades stars in post processing.

#Moon #Pleiades #Astronomy #Astrophotography #Photography #Infrared #Monochrome #Optics #Refraction #Atmosphere

untitled and uncredited

#tea #planet #moon #night #sky #moon #earth #art

The moon (appears to be) resting in the trees.

https://www.tumblr.com/cristalplanetheart/749601272783601664

@photography
#NightSky
#moon

Success and Preparation

At 1:47 a.m. EST (6:47 UTC) on Nov. 16, 2022, #NASA’s #Orion #spacecraft launched atop the #Space Launch System (#SLS) rocket from historic Launch Pad 39B at NASA’s Kennedy Space Center on a path to the #Moon, officially beginning the Artemis I mission.

https://www.youtube.com/watch?v=2WODej84jxg

Success and Preparation

At 1:47 a.m. EST (6:47 UTC) on Nov. 16, 2022, NASA’s Orion spacecraft launched atop the Space Launch System (SLS) rocket from historic Launch Pad 39B at NASA...

^YouTube

I want to believe - but I've heard too many pixie-dust science predictions to just roll over. Prove it to me - show me the math.

https://thedebrief.org/nasa-veterans-propellantless-propulsion-drive-that-physics-says-shouldnt-work-just-produced-enough-thrust-to-defeat-earths-gravity/

#space #nasa #universe #astronomy #art #science #galaxy #moon #stars #spacex #technology #tech #innovation #engineering #business #technews #gadgets

The Debrief

Science, Tech and Defense for the Rebelliously Curious.

^{Christopher Plain (The Debrief)}

Full Moon 20240423

April 23
Full Moon
Illumination: 100%

#photo #photography #photographer #photographylovers #moon

Tonight, if you have clear skies you can catch the bright star Spica in the constellation #Virgo with the #Moon

#stargazing

The dreamer
by Kenny Random

(waiting for #caturday)

#cat #cats #art #moon #dreamer #KennyRandom