Hunter’s Moon 2019


In honour of the full Hunter’s Moon this weekend – timelapse from Adrien Mauduit at Night Lights Films – https://www.youtube.com/channel/UCC0CLzCpM6nuLSAi1JNBjkA

Hunter’s is an autumn moon, the first full moon of fall following the Harvest (full moon closest to the fall equinox) moon. https://earthsky.org/tonight/full-hunters-moon-from-dusk-till-dawn?utm_source=EarthSky+News&utm_campaign=45a5e032e7-EMAIL_CAMPAIGN_2018_02_02_COPY_01&utm_medium=email&utm_term=0_c643945d79-45a5e032e7-393970565

Ponder origin of all named moons at the link below –

https://www.timeanddate.com/astronomy/moon/full-moon-names.html

Black Hole Visualization


This week NASA’s Goddard Space Flight Center released a black hole visualization. Jeremy Schnittman, astrophysicist specializing in computational modeling of black hole accretion flows enlisted computer software to animate black hole glory. From https://www.nasa.gov/feature/goddard/2019/nasa-visualization-shows-a-black-hole-s-warped-world

Viewed from the side, the disk looks brighter on the left than it does on the right. Glowing gas on the left side of the disk moves toward us so fast that the effects of Einstein’s relativity give it a boost in brightness; the opposite happens on the right side, where gas moving away us becomes slightly dimmer. This asymmetry disappears when we see the disk exactly face on because, from that perspective, none of the material is moving along our line of sight.

Closest to the black hole, the gravitational light-bending becomes so excessive that we can see the underside of the disk as a bright ring of light seemingly outlining the black hole. This so-called “photon ring” is composed of multiple rings, which grow progressively fainter and thinner, from light that has circled the black hole two, three, or even more times before escaping to reach our eyes. Because the black hole modeled in this visualization is spherical, the photon ring looks nearly circular and identical from any viewing angle. Inside the photon ring is the black hole’s shadow, an area roughly twice the size of the event horizon — its point of no return.

“Simulations and movies like these really help us visualize what Einstein meant when he said that gravity warps the fabric of space and time,” Jeremy Schnittman, who created the images at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, said in a statement.

Simulated black hole.

Click in to see more angles. | The black hole is seen nearly edgewise in this new visualization from NASA. The turbulent disk of gas around the hole takes on a double-humped appearance. The black hole’s extreme gravity alters the paths of light coming from different parts of the disk, producing the warped image. “What we see depends on our viewing angle,” NASA said. Image via NASA’s Goddard Space Flight Center/Jeremy Schnittman.

NASA creates stunning new black hole visualization

Timelapse Of The Future


From melodysheep –

We start in 2019 and travel exponentially through time, witnessing the future of Earth, the death of the sun, the end of all stars, proton decay, zombie galaxies, possible future civilizations, exploding black holes, the effects of dark energy, alternate universes, the final fate of the cosmos – to name a few.

This is a picture of the future as painted by modern science – a picture that will surely evolve over time as we dig for more clues to how our story will unfold. Much of the science is very recent – and new puzzle pieces are still waiting to be found.

To me, this overhead view of time gives a profound perspective – that we are living inside the hot flash of the Big Bang, the perfect moment to soak in the sights and sounds of a universe in its glory days, before it all fades away.  Although the end will eventually come, we have a practical infinity of time to play with if we play our cards right. The future may look bleak, but we have enormous potential as a species.

Featuring the voices of David Attenborough, Craig Childs, Brian Cox, Neil deGrasse Tyson, Michelle Thaller, Lawrence Krauss, Michio Kaku, Mike Rowe, Phil Plait, Janna Levin, Stephen Hawking, Sean Carroll, Alex Filippenko, and Martin Rees.”

https://www.patreon.com/melodysheep

Night Skies And Petroglyphs


From Harun Mehmedinovic and Gavin Heffernan at https://vimeo.com/357143587 – Ancestral Nights. Filmed for Skyglow Project, a crowdfunded endeavor illustrating effects of light pollution on dark skies. Lose yourself in night skies and petroglyphs….

Carvings, structures and petroglyphs captured in this video represent ancient observance of night skies by Native Hawaiians, Paiute people of California and Puebloans of the Southwest.

Concentric white circles filling the sky over large rock with symbols carved into it.

“These petroglyphs and structures reflect the long standing interest in ancient astronomy which grew stronger as many of the tribes went from the hunter-gatherer to the agrarian societal orders. From references to the sun carved in the rock, and interest in using the sun to predict seasons (entire buildings built to serve as sundials and calendars, a critical element in the farming communities) to those of 13 moons (lunar annual calendar), to carvings of stars and constellations, interest in celestial bodies is ever present across the indigenous communities of the United States.” – Harun Mehmedinovic

Northern Hemisphere Aurora Alert


As I write, streams of solar wind advance at 594.5 Km/second. Commanded by CH58+, a impressive coronal hole poised to deliver rare auroral punctuation as far south as Washington State, Idaho, Montana, Michigan and Minnesota.

Auroras happen when electrons energized by acceleration collide with Earth’s upper atmosphere. Acceleration allows energized electrons to follow Earth’s magnetic field downward to the poles. Anywhere from 80 – 500 Km above Earth’s surface, electrons collide with oxygen & nitrogen atoms, spiking the atoms’ energy. Soon after, atoms relax to their former energy state – relaxation creates light known as aurora borealis. Initially light forms an arc from horizon to horizon, within a few hours arcs twist and sway in upper atmosphere wind.

A geomagnetic storm warning issued by NOAA, Space Weather Prediction Center, forecasts G1 (minor) activity August 31, increasing to G2 (moderate) September 1st as solar wind blows Earthward at 650 Km/second.

Its been years since space weather issued public alert of aurora over Greater Vancouver. Auroras are fickle, space weather makes no promises. That said, if you find yourself away from city lights with clear skies, don’t miss an opportunity for Aurora to wrap her arms around you. Once you meet Aurora, night skies become a source of wonder.

G1-G2 Watches 31 Aug-1 Sep, 2019

https://www.swpc.noaa.gov/

 

https://www.youtube.com/channel/UCC0CLzCpM6nuLSAi1JNBjkA

Tardigrade Moon


On April 11, 2019 unmanned Israeli spacecraft Beresheet crashed into the Moon during a failed landing. Historians will mark this day as first unintentional Moon crash in 48 years, learn more at https://www.livescience.com/65218-moon-crash-beresheet.html

That said, Beresheet might be credited with depositing life on the Moon. Robotic lander Beresheet carried a payload of 30 million digitized pages of information about human culture and society, human DNA samples and Tardigrades. Human DNA and Tardigrade were locked in resin, held in place by sticky tape onto which thousands more Tardigrade were placed.

Tardigrade, aka “water bear”, are the only known life form capable of surviving airless vacuums of space and lethal radiation levels. Remarkable yes, mind blowing when considered with additional facts – Tardigrade can survive six times the pressure of our deepest ocean, frozen to absolute zero (-273 C) or boiled above 150 C. Dehydrate a Tardigrade for years then add water, voila – business as usual. Eventually they succumb to old age, but don’t hold your breath, life expectancy is 200 years.

In the wake of Beresheet’s fiery demise, indestructible Tardigrade litter the lunar surface. Did they vaporize on impact? I care to think not – Tardigrade are the definition of extremophile, if anything can survive crash landing on the Moon, it’s a Tardigrade.

https://www.thefactsite.com/tardigrade-facts/

Koch Snowflake


Yesterday work found me on a luxury yacht, a 60th wedding anniversary celebration with finicky moving parts. As chefs began plating passed canapes I voiced dissatisfaction with presentation – no symmetry please! Later that night one of the chefs, a close friend and co-worker of nine years messaged – in all our years working together why haven’t you corrected my symmetrical arrangements? Adding, “Google informs me  “Symmetry in everyday language refers to a sense of harmonious and beautiful proportion and balance”. He asked “what would you call your preference? Randomness, disorder or perhaps asymmetry “. I replied, “Ask any staff member what makes me crazy, I guarantee one of two answers – symmetry or bartenders who put caps on empty wine bottles.” My preference? Asymmetry of course!

Why asymmetry? What compels me to hammer notions of symmetry out of new staff? Why do long-time staff members laugh out load when they hear me train new staff, “pay attention” they chime, “she hates symmetry, no bookends, twos or fours, only threes and fives”. Cheekier staff punctuate with “relax, as long as it’s random she’ll be happy”.

Random? Asymmetry isn’t random, it’s pleasing and calculated to my eye! Without warning a fractal bomb went off – wait a minute, fractal symmetry is absolute perfection!

Ponders scurried from Mandelbrot Sets to Koch Snowflakes.  From https://fractalfoundation.org/resources/what-are-fractals/ “A fractal is a never-ending pattern. Fractals are infinitely complex patterns that are self-similar across different scales. They are created by repeating a simple process over and over in an ongoing feedback loop. Driven by recursion, fractals are images of dynamic systems – the pictures of Chaos. Geometrically, they exist in between our familiar dimensions. Fractal patterns are extremely familiar, since nature is full of fractals. For instance: trees, rivers, coastlines, mountains, clouds, seashells, hurricanes, etc. Abstract fractals – such as the Mandelbrot Set – can be generated by a computer calculating a simple equation over and over.”

In 1904 Swedish mathematician Helge von Koch published a paper titled “On a Continuous Curve Without Tangents, Constructible from Elementary Geometry” – translation, one of the first published fractal theories. Koch Snowflake is an elaboration of the Koch Curve. Be it curve or snowflake, fractal mathematics are the same – whenever you see a straight line divide it in thirds, build a equilateral triangle on the middle third, erase the base of the triangle so it looks like the shape to the right.

Animation of the first seven Koch Snowflake iterations –

Koch Snowflake

Shortly after his first query, my friend reminded me of mutual affinity for Mandelbrot sets (example below). So why asymmetry, he pressed. Why, indeed?

https://en.wikipedia.org/wiki/Mandelbrot_set

Oh man, I replied! It’s too late for this ponder! Obviously fractal symmetry warms my heart, but until the day chefs definitively represent fractal perfection with smoked beet tartare on a passing platter – asymmetry remains an art form, symmetry makes me cringe. Go figure.