Exoplanet Transit - Deep Sky Videos
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- čas přidán 11. 09. 2024
- We're watching the star Wasp-33 as a giant, fast-moving planet moves across its stellar disc. The extrasolar transit is being recorded by Liam Hardy using a telescope called the pt5m.
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Videos by Brady Haran
Thanks to Paul Haese for his Mercury transit image: paulhaese.net/
Thats one BRIGHT kid, watching STARS. I hope he has a SHINING career... >.
I think this video suddenly seemed extra amazing after I realized that since the star is about 300 lightyears away, the transit actually happened about 300 years ago. Mind Blown.
well, by now it should be 311 years i reckon
How did I miss this episode? This is one of the coolest videos on DeepSky
I hit like on these before the video loads. We call that confidence.
@Chiodostwo thank you... can't go wrong when your making videos about cool stuff like this!
That has to be such a enjoyable Job.
What a charming young man. That was a very pleasant watch.
Another awesome vid and what a very nice (and obviously bright) young man!
Hmm. I'm doing something wrong. If I took my shoes off when I'm doing astronomy, my feet would freeze and I'd stub my toe on something outside in the dark.
Amazing that exoplanets can be detected with such a small telescope. Of course, by most amateur astronomer standards, it's a huge telescope, but really it's tiny - but it has to be put somewhere where the seeing is regularly good.
Liam's an excellent presenter - coupled with Brady's usual top-notch editing, this is a great video.
I am so glad i found this channel its so hard to see the sky lately
This student was great! Very good voice for speaking and very mature and confident, more or less.
I love these videos!
to clarify further, the data from kepler is indicating that smaller planets in the inner orbits are actually more common, it's just that our other methods to find exoplanets weren't as refined, so we naturally picked up more large inner exoplanets first (they also cause a stronger easier to pick up wobble, so it's not just the occultation method that was biased by this). I'm willing to be corrected here, but I'm pretty sure that's accurate, all imho.
Nice video, that guy was very comfortable to watch and listen to.
He was a nice chap. I like it how you have UK power outlets on the wall :)
This channel, and Sixty Symbols, have re-awakened a dormant love of astronomy. Too bad that the two channels now seem dormant, apparently.
Usually by looking at the width of the absorption bands in it's EMR spectrum. Rotation will cause some of the light to be red-shifted as that side of the star moves away from us, while some of the light is similarly blue-shifted as that side moves towards us.
Excellent video, I like his enthusiasm! Keep up the good work Liam!
@DeepSkyVideos I was expecting some knitted shooting stars and crescent moons on his socks. What gives? :) Nice work on the vid BTW, the cut from him explaining the affect of the clouds to the clouds in front of the moon was really nice. It illustrated the point simply and clearly.
The guest is very good at this.
@chickenmarbles1 Sure, this star is 300 or so light years away from our solar system, so the light takes 300-ish years to get here. As the transit began to be visible here (with Liam viewing 300 year old light) there was still light on its way here that had left Wasp-33 299 years, 364 days and some amount of hours ago showing the end of the transit. A few hours (or minutes, I missed the duration) later that light from the end of the transit arrived and he viewed it. Hope that makes sense. :)
So I wonder if the small telescope causes vibrations that interfere with the larger telescope.
Very satisfying video to watch, thank you!
Fabulous. Well done, Liam! :)
you guys may also be interested in setitalks (here on youtube), they have a few exoplanet videos. I'm particularly enamored with the kepler-based videos (I think I've seen at least a dozen, possibly two dozen kepler oriented videos, amazing little satellite). I'm not sure if I'd concur with the astronomer here though, not sure when this video was made, but it does seem that actually our solar system is not unique, that large inner planets don't have such a high frequency.
honestly when the video started i thought i would be bored to death but i was glued to the screen the whole time
Can you also do some videos on types of telescopes and selecting telescopes for would-be amateur astronomers?
Great video!
Great video on some real nuts and bolts science!
@TheLilads We'll be sure to tell his supervisor! ;)
Well actually the testing methods for exoplanets we have at the moment are more biased towards detecting hot Jupiters, and some people have suggested that based on this bias and the fact that we still manage to find planets that aren't these Jupiter-like, closely orbiting planets suggests that there may be a higher abundance of smaller, rocky planets.
Yes, that's correct. A light year is the maximum distance light can travel in one year.
Awesome! They're using Fedora :)
You're our kind of channel B)
If it's orbiting around the poles, is that because it's been captured by the star?
@RhondaH True; we too often inadequately use our tool of language. I’ve always had a slight problem with the use of the term “solar”. We often hear astronomers referring to other star systems as solar systems when truthfully they are extrasolar systems. Only our star system should hold the name “Solar System”, because it was named after our sun, Sol.
How can they tell that the planet is in a polar orbit?
Seems you're both right, thanks. Astrometry, apparently :)
I was only thinking of the Doppler effect in light.
I need a telescope like that.
about $9,000 for a 20' dobsonian
Liam Awesome job! Keep up the great work!
Love your vids!!
@gregiep that's our kind of subscriber! ;)
Phil Plait has a very mundane explanation for the big gas giants being all that we've seen so far: big gas giants are easier to detect! As we get better at looking for extrasolar planets, with more fine-grained data, we should start seeing smaller and smaller planets.
@praetorian85 i want a large, aperture-science-camera
see what i did there? lol
got to love 'ol portal refrences
Hey Brady you're still in La Palma? You should hop over to Tenerife and pay a visit to ULL's physics faculty... and me. :)
What is the purpose of this observation, except than confirming what is expected? Is data gathered during the observation used in any way afterwards?
The data that he gathered was 300 year old data..ಠ_ಠ.
I love how he says data.
"day-tihh"
If you were using the Big Telescope, was there any chance of actually seeing the planet on screen? o.O
Could it be that it's just easier to find 'hot Jupiters' that are near their planet, so we just haven't been able to find any other star systems like our own? Just because we haven't found any doesn't mean they aren't out there. Extrasolar planet discovery is still in its infancy, really.
@xilin1983 No it's way too small and faint against the glare of the star, exoplanets are only detectable through the wobble of stars caused by planets orbitting and from planet passing in front of stars, so we can't actually "see" them only their effects.
adorably intelligent. ;}
Will you visit the GTC? My cousin Martí works there.
love the red socks :)
9 years
Psssst, BRADY, please insert the missing "a" in the discription between "as" and "giant" and feel free to delete this comment afterwards. Great work, as you always do.
If that star was 300 lightyears away, does that mean that what we're seeing here happened 300 years ago? is that right?
@xbornstubbornx They are in the Canary Islands
"With any luck we'll still be here in a few thousand years..."
If the planet orbits every 1.2 days, how long did this transit last?
is there some place i can watch all of Brady's video?
Curious what happened to Liam Hardy, since he doesn't seem to do videos for this channel anymore.
Wonton he's a lecturer at Sheffield University
Search Liam Hardy Sheffield and you will find his personal page on their site
@MuadDib1402 I would guess from the wobble of the star.
Why are the pictures so noisy?
England is such an unfortunate place for the optical observation, since the sky is overcast most of the time.
I also like to take shoes of while at work and use slippers. I don't understand how people manage to be with shoes all the day, well I understand, but why not use an option to take them off, and again of course not everyone has that option, still from what I know not many of those who can - do take that option.
haha this is awesome, thank you
niiiiice
What is the data you collected used for?
Thanks for these! Interesting however that he refers to the stars "passing over" as if they are the ones moving, but in reality it is the earth turning. We humans still can't get away from using language that "assumes" we are standing still and the sky is moving even though we know better. We continue to refer to the sun as rising when that is really not true except for our perception of it here on earth. Just think we might need some new phrases maybe.
It has nothing to do with the earth turning or moving it is actually the planet orbiting and passing over the star, like he says.
0:35
lol, rocky planet joke... get it, because... it's a rock XD
how do they determine rotation of far away stars?
11:11... was that on purpose?
Gnome Desktop!!! :D
Thats not a planet, its a space station!
@xilin1983 I doubt that.
@melrobRTF WoW!
how long is one light year?
Tom Thwaites
9.4×10^15 meters
9.4 quadrillion meters
hehe... 7:38 i heard teleportation :D
this happened 380 years ago
@xilin1983 no its much too small and too dimm
Wut so * suddenly " a Jupiter could come to exist near the sun, did he just say that ;o
'only' half a meter diameter...
astronomy - looking into the past to predict our future.
I WANT A SCIENCE CAMERA
149th viewer
How do you determine the star's rotation axis?
Spectroscopy. As the star rotates, one half of it is moving away from the observer - therefore it is redshifted, while the other is moving towards - therefore it is blueshifted.
I usually don't worry about it
How old is he? haha
@fullmetalphysicist3 teleportation is cooler :)
Linux FTW!
where the dubstep go? :/
7th
i have no idea whats going on...
how the fuck did i get here from paralyzer-finger
eleven?
just watched that music video.
You have terrible taste :)
i got here from kickstart by example
Lol ok, so there is this discussion about whether or not our science funding is poorly placed. Is it really that important to find new particles and send people to mars when we could invest in reseach to make better batteries and new sources of renewable energy? I usually speak for the importance of astronomy and such things, but when he says "with any luck we will still be here in 1000 years, and the information we gather now might become useful" I'm thinking that this field should be shut down to make room for saving the planet now :p
kartoffelmozart
If you take NASA's budget, and use a US dollar to represent the entire federal income, you will find that their budget doesn't even get out of the border. And that miniscule amount funds everything NASA does in space and a LOT of science dealing with the planet, human health, and plenty of other needed things. Only a small part of their budget deals with space directly.
And thanks to NASA inventions, for every dollar spent on NASA, 10 dollars worth of economic activity takes place, which basically makes NASA free.
Just Google "NASA spinoffs" and read the wiki. It breaks them down by category. You don't want to mess with NASA.
Now, if you want to save some money, you could try to shut down The National Reconnaissance Office (NRO). It's a spaced based government soy agency who does nothing but look at the world with telescopes and other types of satellites.... They also have a budget almost as big as NASA's.