Apparent Retrograde Motion (Visual Explanation)

Short Video Series (SVS-0021)
Apparent Retrograde Motion (Visual Explanation)

📫𝐎𝐮𝐫 𝐅𝐁 𝐏𝐚𝐠𝐞:

📚𝐃𝐚𝐯𝐢𝐝'𝐬 𝐁𝐨𝐨𝐤𝐬
📕 𝗪𝗲𝗶𝗿𝗱 𝗠𝗮𝘁𝗵𝘀: 𝗔𝘁 𝘁𝗵𝗲 𝗘𝗱𝗴𝗲 𝗼𝗳 𝗜𝗻𝗳𝗶𝗻𝗶𝘁𝘆 𝗮𝗻𝗱 𝗕𝗲𝘆𝗼𝗻𝗱
📙 𝗪𝗲𝗶𝗿𝗱𝗲𝗿 𝗠𝗮𝘁𝗵𝘀: 𝗔𝘁 𝘁𝗵𝗲 𝗘𝗱𝗴𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗣𝗼𝘀𝘀𝗶𝗯𝗹𝗲
📗 𝗪𝗲𝗶𝗿𝗱𝗲𝘀𝘁 𝗠𝗮𝘁𝗵𝘀: 𝗔𝘁 𝘁𝗵𝗲 𝗙𝗿𝗼𝗻𝘁𝗶𝗲𝗿𝘀 𝗼𝗳 𝗥𝗲𝗮𝘀𝗼𝗻
** The kindle versions are available

📄𝗧𝗿𝗮𝗻𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻:
If we observe the planet Mars in the sky over a period of 2 years, we see that it slows down, stops, goes back and then returns its original path.

Why does Mars move like that? In reality, Mars doesn’t actually slow down or stop or go back. The movement in the sky we see is just an illusion called apparent retrograde motion. It happens because Mars orbits the Sun at different distances and speeds than Earth does.

If we look at the solar system, planets that are closer to the Sun orbit faster. As you know, Earth orbits the Sun every 365 days. Mars, on the other hand, completes one orbit of the Sun in 687 days – almost twice as long. That means every 2 years Earth catches and passes Mars. If we look at Mars and Earth’s orbital movements from Earth’s perspective, we can see clearly that when Earth catches and passes Mars, Mars’ path looks like a loop.

Apparent retrograde motion is valid for other planets, including the inner planets Mercury and Venus. However Mercury and Venus always pass Earth during daytime, so their apparent retrograde motions are difficult to observe.

#Apparent #Retrograde #Motion

[astralaish]

Man so many people are here after Orb: On the movements of the earth. lol!! off course me included XD

[Mike]

Watching after episode 4 of Orb: On the movements of the earth.

[karlsoriso]

Pov: you're here after watching Orb on the Movements of the Earth ep 4

[KimSooAcu]

that's just....the best explanation of retrograde I've ever heard and seen. Thank you!

[kafkayash]

Me here after watching orb: on the movements of earth. The perfect circle is broken afterall 😭

[miftahurrahman]

I love astronomy after watching anime titled "orb: on the movements of earth"

[saurabhj]

There are so many astronomy youtubers and yet no one thought of explaining this.
I learnt about this from an Indian astrologer and his presentation on pc app drawing and saw today animation explanation.
Thanks.

[GregoryTheGrster]

I always liked how the Ptolemaic system explained the retrograde motion of the planets. It made 100% sense!

[Aurochhunter]

I remember learning this years ago in school, but an animation is much easier to understand than a diagram in a book.

[ana_s.neon.soul.]

I’ve been searching everywhere for this bless up

[brandoncontreras]

Correct me if I'm wrong, but wasn't this the final nail in the coffin so to speak for a geocentric Earth? It was because of the retrograde motion we realized that we might be moving too?

[jacksson]

I think a horizontal demonstration from the same plane would show better than this overhead view.
It works to point out the different speeds from the overhead view but you have to transition to the horizontal plane and show why the earth orbit in relationship to mars causes the back & forth you witness from your observation on the ground.

[yelchan]

You explained it well.. I wish you could upload more educational videos🙏

[yabrofenko]

That's actually cool. It looks at they're doing a little dance around the sun :D

[alanwallis]

So you change the planet yr looking for progressing in the same motion . eg Neptune . . Thank you for this .

[kekedream]

Great scientific explanation sans astrology, thanks

[ItzLordeYT]

I guess I get it, but how can we “see” the loop if we can’t see mars at all, shouldn’t it be behind the sun for some period of time throughout the year under this?

[Crystal_guy]

dammm never though that an anime will teach me This much intresting Astrology

[Aurochhunter]

Come for the science, stay for the music.

[Grims-Arc]

Here because of orb. And could understand it better because of theory of relativity.