Something Strange Is Happening to the Iconic Star Polaris

Hello and welcome! My name is Anton and in this video, we will talk about the star Polaris
Links:
#polaris #star #astronomy

0:00 Intro to Polaris
1:20 New discoveries from the recent study
2:00 What stars are these?
3:45 Cepheid variables and JWST
4:50 Strange observations
7:00 Potential explanations
8:00 Could this cause a problem?

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[skwervin]

I live in the Southern Hemisphere and so Polaris is over the horizon for me and to navigate instead I use the Southern Cross. Back in 1999 I went to the USA for a week and was hoping to see some of the stars I had never been able to see due to location but unfortunately, the weather did not comply.

Maybe one day I will finally get to see Polaris and its Northern Hemisphere friends.

[icaleinns]

This is why I watch this channel! I learned 2 new things that I never knew before: 1) Polaris is actually a triplet and 2) It's a Cephid!
Obviously my astronomical education needs a huge upgrade.

[funky]

"you can see the north star from pretty much anywhere on the earth"
Southern hemipshere: 👁👄👁

[benw]

Anton, you have one of the clearest, most educational, often most interesting channels on YouTube. I always learn something, and it's so good to have you around. You put in a LOT of research and effort into these videos. -- Anton Petrov, Isaac Arthur, and John Michael Godier are three of my favorite science, space, and science fiction channels. Great stuff. You are a wonderful person. I hope many peole are turned on to science and space because of your videos.

[Steve-Fish]

Love anton's stuff he's always dripping with integrity not trying to spice things up with aliens and stupid stuff, even though he's not the most qualified of physicists his stuff shines bright. You'll never find shady adverts for vpn's here.
Maximum respect for this guy.

[deanlawson]

Huh.. Well that's interesting. I never knew that Polaris was a multi-star system, I always thought it was one single star.
Thanks for that Anton - Good video!

[Premo-]

Rare Polaris Mention (What happened in the replies. I'm talking about the star, this is a science channel guys)

[musequal]

Thanks for all the hard work you put into these videos Anton, really appreciate the clarity you bring to science communication!

[awuma]

A lot of the earlier work on Polaris was carried out by Karl Kamper, Don Fernie and others at the David Dunlap Observatory just north of Toronto. Sadly, the Observatory has closed, and those astronomers have passed away, but their work lives on.

[Clearlight]

I've long thought that the assumptions made about cepheid variables could be falllible. Taking them as so constant and so predictable when we don't know everything about these systems seems like setting ourselves up for errors, especially when they're used for intergalactic distances!

[wbnc]

Way back when I was a kid, ( and dinosaurs roamed the woods) Made a homemade sextant for a science fair. I later became a navigator I have stared at that star quite a bit, before GPS it was always a good idea to do an observation visually to make sure your radio direction finding gear was working right., No one takes "I thought I was miles from that" as an excuse when you drive a cargo ship into the shiny new oil rig :P

[grayaj]

It's fascinating to think that the cosmological principle might not be universally true, and that some things like speed of light could be different at different times or locations. There would be a lot of new science trying to figure it all out.

[digiryde]

Anton, You are a real Internet treasure. Great content as always,

[archie]

0:00 Hey, Anton, take care, there's a star behind you!

[zanpsimer]

Light pollution is so bad now where I live I can’t even make out Polaris anymore.

[EL_DUDERIN]

FYI, Polaris only can be seen from the northern hemisphere so technically it can't be used anywhere on Earth.. If you are in the Southern Hemisphere you need to use other methods.

[ktina]

Thank you Anton for another educational video! I always learn something new from watching all your videos. Hopefully the answers are forthcoming on the variability of the main Polaris star. I'm looking forward to your update when that happens!!

[folee_edge]

Thank you to all this channel's supporters ❤

[ContrapuntalComposer]

Excellent video, as usual, Anton. Sounds like there is both amplitude modulation and frequency modulation of the amplitude modulation happening here. Without using these words, your video conveys that Fourier analyses were done - in that the frequency of the amplitude modulation was determined, as well as some change in that frequency. I think that it would be interesting to do second and third order recursions of Fourier analysis to determine the frequency of the frequency and even the frequency of the frequency of the frequency. Now, with only 200 years of data, we might not really get much from this... but if we can, then we could perhaps clarify time correlations with other physical factors, such as perhaps the dynamics of the three-body system that you described or just maybe something more internal to the Cepheid variable, itself. Just a thought.

[AngelCatBaby]

How I love your channel Anton, you explain things better than most others offer in their work. I’ve learned a lot from your channel. Thank you for sharing this information, and for doing the strenuous research so that we can have a better understanding of the universe we live in.
I’ve been an amateur astronomer since a teenager, was able to have built my own telescope, small but also efficient. When the weather permits, i gaze upon the stars and galaxies, viewing them in their own finery of energy and light, wondering if life exists outside our own universe, it is sometimes mind boggling and confusing, but necessary for finding the answers to questions that have been raised many times.
Your research is one of the best I’ve encountered, keep up the good work. May you continue to stay with the truth about our universe and always keep sharing with us the discoveries and secrets of the universe and science, which I have never forgotten, no matter how old I am…now 74…it still is fascinating and exists for me….thank you for