Mars in the Loop
Between Sep 2024 and May 2025, Mars traced a retrograde loop through Gemini and Cancer. This apparent reversal happens when Earth, moving faster in its orbit, overtakes Mars. Around Dec 8, Mars seemed to pause near the star cluster M44, drifted westward, then returned by May. At its closest on Jan 16, it was just 96 million km away.
apod.nasa.gov
Tunc Tezel / NASA APOD
#APOD #Mars #Retrograde #Astronomy #NightSky #stellarsnap

   
#TimeTravelTuesday #ThoughtExperiment: Many #Worldlets?

or in other words, fractions of #World, not the whole World. #TimeTraveler #theories often involve splitting or multiplying #universes. Time Travel events divide #spacetime into two near-identical clones. Grandfather lived or did not, you did not meet yourself or you did. But if we think this through further, its scope might not be quite so universal as typically presented.

Take 3 heavenly bodies: Mother #Earth, the #AlphaCentauri triple star system (at 4+ light years away), and #Polaris, the #NorthStar (at 400+ light years away).

Now we program our #TimeMachine to take us back one year (#retrograde) where we meet ourselves. Hi selves! This all takes place in one year. There's the original us, there's us leaving the present, and there's us meeting our past/original selves a year earlier — standard #boilerplate #scifi #movie #script.

Alpha Centauri will have to wait another 3 years before any of this information can get to there. This is related to the concept of a #lightcone which expands at the speed of light. This doesn't sound quite so much like birthing a twin universe, does it? Now what about the North Star? It will have to wait 433 years for news of our Time Travel event(s). And that's still pretty much in our tiny #celestial neighborhood.

The point is that the effects of such events are largely localized and rapidly diluted as we move farther away. This still has its paradoxical problems, but it doesn't quite feel like the whole universe dividing into two — maybe part of it (a universelet? a subuniverse?) Possibilities are that in moving further out in space-time, the effects of a Time Travel incident may be 'blurred out', as are anomalous numerical samples in the law of large #numbers. If one pours a cup of coffee into a lake, it doesn't change the color of the lake. There is a brief chaotic #glitch before it is no longer measurable.

It is tempting to imagine space-time as "stitching" itself back together. (Glitch & stitch?) Such speculations are related to #StephenHawking's "chronology protection conjecture" of 1992. And along with #blackholes, #entanglement, and other #quantum phenomena, if Time Travel is possible, then we should be looking for it at every scale. We could be surrounded by time-traveling particles everywhere all the #Time.

https://Wikipedia.org/wiki/Many-worlds_interpretation … #ManyWorlds
https://Wikipedia.org/wiki/Temporal_paradox#Consistency_paradox … #GrandfatherParadox
https://Wikipedia.org/wiki/Light_cone … #LightCone
https://Wikipedia.org/wiki/Time_travel#Absence_of_time_travelers_from_the_future … #TimeTravelTheory
https://Wikipedia.org/wiki/Law_of_large_numbers … #LawOfLargeNumbers
https://Wikipedia.org/wiki/Chronology_protection_conjecture … #ChronologyProtectionConjecture

#Reactionary #retrograde in #regression

 
A #Scientist Claims He’s Solved a Major Time Travel Paradox

#SciFi fans know that (#retrograde) #Time #Travel breaks basic #logic. If #interdimensional #transport is to be pursued, then logic may have to be violated.

Gavassino's new #study doesn't so much remove the #GrandfatherParadox, as it suggests how higher #physics could provide a workaround.

https://www.PopularMechanics.com/science/a63395644/time-travel-paradox-solved/
https://Wikipedia.org/wiki/Temporal_paradox
h/t @cosmiclibrarian

#German #animation #studio #Kurzgesagt's #colorful take on #Time #Travel

❛❛ for the first time, some observers could actually see #tachyons literally traveling backwards in time [#retrograde] which means they could be used to directly interact with the #past. ❜❜ 6:08/11

https://www.youtube.com/watch?v=dBxxi5XAm3U 2024 Aug 27

 
#TimeTravel (#retrograde) is transporting anything into the #past: a #person, a #quantum #signal, a #thought.

Resulting from some combination of:
• #QuantumEntanglement
• #Wormholes
• #DarkEnergy & #DarkMatter
• #ManyWorlds & #Multiverse
• #Tachyons & faster-than-light (superluminal) #particles
• #Consciousness may involve quantum processes in the #brain
• Rotating cylinders or gyroscopes (after #HGWells)
• Higher #dimensional #geometries, folding or looping #SpaceTime
• & c …

#Astrophysicist Neil deGrasse Tyson asks: Can we go back in Time [ie, #retrograde] using a space-time #machine?

https://www.youtube.com/watch?v=yI9IL9pNcpg 2022 Dec 10
https://Wikipedia.org/wiki/Neil_deGrasse_Tyson … #NeilDeGrasseTyson
https://Wikipedia.org/wiki/Spacetime … #SpaceTime

Colorful critters teach some basics of time travel #theory in this 11-min #animation (with ads). One concept not widely illustrated elsewhere is that everything is moving at the #SpeedOfLight within the 4 dimensions of #SpaceTime. As we move faster through #space, our time slows down proportionally (relatively?) If we #stop, our time speeds up to maintain the constant #velocity.

https://www.youtube.com/watch?v=dBxxi5XAm3U

Florida wants Abstinence Only Education in public schools???
Words fail me...

Pluto is retrograde from May 2nd to October 11th!

Get ready to take on any retrograde season with our exclusive Out of My Way, Retrograde Mist. It's blended with a combination of essential oils in distilled water to help you safely navigate potentially chaotic times.

https://www.inkedgoddesscreations.com/products/out-of-my-way-retrograde-mist
#PlutoRetrograde #Astrology #Rebirth #Transformation #Cleansing #SpiritGuides #HigherSelf #LetGo #Retrograde #Magick

Heard someone talking today about #Mercury "going backwards" and I think they misunderstood what #retrograde is.

Apparent retrograde motion is displayed for every body that has a different sidereal orbital period. (the time it takes for the body to complete one revolution around the sun)

This is a photo illustrating #Mars retrograde but yes the same concept.

I ran out of room. Read the alt-text for an explanation of what is happening in this picture.

This summer there are six planets and one dwarf planet (Pluto) in retrograde, which is a nifty optical illusion in which they appear to move backwards in the sky. But how does that work? I made a video a few years ago about the Mars retrograde, using paper cutouts of planets https://youtu.be/IEMm1VBtr8k