Yet another hit from the Brady bunch. 8 minutes of pure listening pleasure.

Once again, great video. I learn something new every time. Of course Dr. Gray's eloquence just takes it one step further as well. Would love to sit down over a cup of coffee and listen to her speak about almost anything.

Damn dr gray is my pick for faculty of the year! When brady is asking her questions it's so obvious she's actually listening and thinking about it! Had many professors who wouldn't even come close to being that compliant

That's what I love about science. Even an apparently dull thing you can still dig up interesting stuff

@K1lostream

5 жыл бұрын

Creamy Pasta - Yep! I remember someone made a science video on paint drying! When you zoom right in, drying paint is interesting!

As soon as I saw this was one of Meghan videos, I gave it a thumbs up, no need to wait until I watched it. As usual. I was not disappointed.

Dr. Gray, I like that you were able to take a technical paper and explain it in plain English. Now I can go to it and perhaps decipher some of it.

Dr. Gray you are the best. I love how you explain a probably dense paper succinctly, but in such a way that it still stirs the imagination. My regards to Brady for putting together such an inspiring body of work as well.

Thanks, Dr. Gray.

Amazing stuff as always!

Surprisingly interesting video. Keep them coming!

This was a really good one. You can always find something that's interesting if you do some looking and Meghan didn't disappoint with this one. These star population studies are so cool. We can learn a lot from these seemingly dull open clusters.

Thank you. Always interesting.

Dr. Grey did a great job as always to help make an interesting video, especially on a 'less than extraordinary object". Love this channel! *Edit* I better not find a dislike on this video!

@rhoddryice5412

3 жыл бұрын

Only eleven dislikes in close to five years. That’s quite extraordinary isn’t it?

Nice video.

I clicked on this because I thought it was MC50, the band with Wayne Kramer that is marking 50 years since the MC5's first album, "Kick Out The Jams." But that's okay because I like this stuff, too.

Yay, it's Dr Meghan Gray!

Hey Brady - we need a video on the newly discovered Proxima b planet :)

Gotta catch em all!

I was really hoping that there was going to be some discussion about why in some of the clusters there appears to be a clustering of the rotational speeds along two fairly obvious lines, irrespective of solar mass. I can't even imagine what could be causing that, but I would have loved to hear some speculation about it. It is most obvious in the h Per, Pleiades, less obvious in the M50, and M35 clusters.

+DeepSkyVideos are you doing a video about the deiscovery of the earth like planet at our nearest star?

Fascinating topic, yet again :). Wouldn't planets orbiting the star cause it's rotation period to slow down too similar to how the Moon slows down Earth's rotation speed?

What's the explanation for the clustering in the NGC 2264 graph? Measurement artifact?

I always love these videos. Just have a question because I am curious. What would happen, theoretically, if there was a quasar and a black hole, both of similar size relative to one another, on a collision course?

@mylesbishop1240

7 жыл бұрын

Robert Adams shhhhh

Dr. Gray could you please give us your opinion on KIC 8462852 "Tabby's Star"? Thanks !

I'm curious about how some of the charts seem to have a high band and a low band with a less populated gap in between. Is this some intermediate speed that for some reason the stars are less likely to spend much time spinning at?

How do you measure the rotation of a star?

at the far right the M50 curve goes down a bit.. faster rotation by very high mass?

This looks to my like an interpretation of an HR diagram, which is also used to measure the age of a star cluster. Which of the two methods seems to be the most accurate?

The Canadian dart is great.

zero dislikes...what a great channel this is!

@allamericandude15

8 жыл бұрын

Look what you've gone and done.

@johnielus8682

8 жыл бұрын

*Uploaded 1 second ago* No likes... What a bad channel this is.

Ooo early ... still has that New Video smell!

Dr. Gray is the woman of my cosmological dreams...

@gagan4012

5 жыл бұрын

says chuck norris

And I would assume that the more factors we have to gauge an age of a star would let us pinpoint more accurately what we believe that age to be, and if there are an outliers like say an extremely red star that appears redshifted but is actually younger and closer to us, having more factors that can tell us this is actually young can let us look at the factors which disagree and ask "why," why do these apparent discontinuities exist, is there a different reason why it's red or is there a different reason why it spins like a young star.

besides interesting astronomy stuff, id like to thank you, guys, for easy understanding english. its not my native language, but i can watch your videos almost without subtitles looking.

Picking objects with the Virtual dart of destiny.

nice video as always.... but press 7 once every second...nice beat :D

Around the 0:25 mark (and again around 7:08 or so), I see two "loops" coming out of the left & right sides of cluster, which are dimmer than the rest of the image's background. At its extremes, the left loop nearly reaches the sides of the frame, and the right one does go out of frame. Are these apparent "dark loops" just a trick of the camera, or do the images really show "structured" dust-heavy/star-poor regions? If so, where does their shape come from?

How do we know the difference between rotating stars with star-spots and exoplanet transitions? It seems to me, that these two observations must be pretty similar. The period of a star rotation and the orbital period of a planet can also be fairly similar, right?

@jackwhite3820

8 жыл бұрын

My guess would be, that the star-spots will form a brightness profile like ridges on a key, and that pattern will repeat itself with every rotation. With an exoplanet you get only a single dip in the brightness profile, and it will move relative to the ridges in the profile caused by star-spots.

@pyrodoll2422

5 жыл бұрын

And the star spots will come and go over a short period.

Wooh!

Dr. Gray, are any of these star clusters being grabbed up by say other groups of star systems, or is it just that the timing of the process is longer than we can observe now?

is that a bottle of tobasco sauce by the window sill?

Heart cluster M50

Yay, Meghan is back! \ o /

Niceee

Do high-spin stars become severely oblate? If so, what shapes are black holes?

@philsphan4414

7 жыл бұрын

Gwilym ap Iorwerth m

Um, that (4:53) counts as a "linear fit" in astronomy?

@rationalgazer

5 жыл бұрын

What would you call it?

In a star cluster, are stars close to each other? Is it comparable to our own solar system where the planets are relatively close to the sun? Also, not all stars are part of a star cluster, right?

@HRW653

8 жыл бұрын

Close is a relative term, they are still pretty far from each other. But from where we are standing they are a cluster. A star is pretty massive and needs it own personal space, can't be too close to another star or bad things happen. There are not alot of lonely stars that I know of, but given enough time and chance I'm sure there are some. They form from giant clouds so they rarely come into existence own their own.

@thulyblu5486

8 жыл бұрын

Our sun is not in a cluster, but is currently on the edge of the Ursa Major Moving Group (which contains most of the stars from the big dipper). The stars in the clusters are relatively close together, but it's not comparable to planets. The average distance in a globular cluster is about 1 light year (our sun's closest neighbor is 4.2 ly away). Compare that to the distance of the most distant planet from the sun, Neptune, it's 0.000475 ly (or 30 AU... the earth is at 1 AU)

@Blackadder1620

8 жыл бұрын

Lots of stars are binary, the most stars the less stable orbits so, they don't last long.

Does Dr. Grey teach classes? Or is she strictly a research scientist?

I would like to see super nova explosion near us so we can see like another moon in the sky but different light spectrum, would be awesome show. Agreed?

@krasnograd

8 жыл бұрын

+ytmoog I mean like 100...1000 light years away, but massive one.

virtual darts are virtually dangerous so don't poke your virtual eye out. virtually speaking...

The dart landed on M46!

@D00b666

8 жыл бұрын

its labeled below the dart.

I just threw a dart at the board with my eyes closed and it landed on M50.... Of course, it took a couple of tries and a couple of people being rushed to the hospital, but no pain no gain.... LOL j/k

So our earth is rotating on its axis, our sun is rotating on its axis, star clusters are rotating, galaxies are rotating... is the observable universe as a whole rotating?

@HRW653

8 жыл бұрын

The cluster itself is not rotating, they measured the induvidual rotation of the cluster members. But yeah, rotation is a perfect mechanism to keep moving while standing still :D

@thulyblu5486

8 жыл бұрын

Lau It's not rotating? I'd have at least expected it to be rotating like the moon, once rotating around its axis for every orbit around the milky way.

@HRW653

8 жыл бұрын

Orbit around a galaxy takes millions if not billions of years, they are not relevant or meaningfull in this research

@thulyblu5486

8 жыл бұрын

Lau Well OK, but do you actually know whether they are rotating? I'm thinking that globular clusters for example must be rotating just in order to hold their shape. The stars must be rotating around the common center of mass in order not to fall into it slowly. They are gravitationally bound after all.

@HRW653

8 жыл бұрын

You're absolutely right, all those masses interact in some way depending on size, distance and relative speed.

Has anyone played pokemon go yet?

Dr, Gray is starting to pick up a bit of an English accent.... not much -- just a little, but it's starting.

M69 :)

Quack... I mean.. second :)

English accent detected @ 3:03

How can anyone view this amazing creation & then deny the creator! She can explain that face to face to God one of these days!

@sandgarofalo7140

8 жыл бұрын

Please do not bring this topic here, if you think that X is the proof for Y without any correlation, then go for it buddy. You don't need to shout it out to everyone.

@magnushmann

8 жыл бұрын

+Sand Garofalo I really hope he is joking...

@hitech98

8 жыл бұрын

I wouldn't make such a joke to agnostic or humanists. "The heavens declare the glory of God, and proclaim his wisdom, power and goodness, that all ungodly men are left without excuse".

@magnushmann

8 жыл бұрын

there exists over 4000 religions - today - and anyone from anyone of those could see this video as proof of their religion/god(s). There is simply no point to it.