Tale of the Shepherd Planets

Tale of the Shepherd Planets

Until recently, the search for planets beyond
our solar system was a matter of calculating the odds and laying out theories of solar
system formation. Circumstantial evidence began to trickle in,
a color shift in a stars light as a planet tugged on it, or a dipping in its light as
a planet passed in front. When would our technology allow us to see
through the bright light of stars to see these alien worlds directly? Scientists using the Hubble Space Telescope
began examining a star visible in the southern hemisphere, just 25 light years away. Called Fomalhaut, itÕs much hotter than our
sun and 15 times as bright. In fact, itÕs one of the brightest stars in our night sky.
What makes it so curious is the large ring of gas that surrounds it. The ring is slightly
off center from the location of the sun. That suggests thereÕs a gravitational presence,
a planet, thatÕs distorting its shape. With a coronagraph in place to block the starÕs
light, Hubble zeroed in on the ring. Right there in the data, it turns out, was a bump,
perhaps a planet. Hubble photographed this planet a second time,
two years later when it had progressed in its orbit. Based on the change in position,
astronomers calculated that it takes about 872 Earth-years to complete an orbit. Astronomers thought it to be a huge planet,
many times larger than Jupiter. The reason they could see is that it may have a very
large and reflective ring system. From the ringÕs narrow width, the planet
seems to be sculpting it, by pushing on and sharpening its inner edge. Hubble had delivered a rare direct image of
an extrasolar planet, the first one ever in visible light. Astronomers could not confirm its presence
by looking in the infrared portion of the light spectrum. That seemed to be the end
of it. Enter ALMA, the not quite completed Atacama
Large Millimeter-Submillimeter Array in the high desert of Chile. It produced this picture of the disk, which
showed that its inner and outer edges are both relatively sharp. Computer simulations refined the parameters
of planets. There is not one, but two, on both edges of the ring. They had to be relatively
small to avoid destroying the ring: larger than Mars, but only a few times larger than
Earth. ThereÕs little chance that these frigid worlds
harbor life. What they do is extend our vision, and our ideas on what it takes to form a solar


  • coolair74 says:

    If would have to be a form of life that we have never seen. The most abundant elements of the universe are carbon, hydrogen and oxygen. Most life would adhere to what has happened on earth. Not saying there are other humans walking around other planets, the building blocks would be simular.

  • dazjah00 says:

    I love learning about different planets i wish i can be reincarnated in about 100yrs to see who was the first man or female who landed on mars

  • Iron Maiden 95 says:

    I think your thinking of Jupiters moon Europa. Its covered in ice but as it orbits Jupiters gravity causes it to expand and contract. The friction from this, we think, causes enough heat to melt the ice under its outer layer. If this is true under the outer layer of ice the entire moon is one giant ocean. And tidal forces caused by Jupiters gravity is what we think causes the cracks in the ice that we can see. And we do think life could be in that ocean.

  • Iron Maiden 95 says:

    On Titan we found organic material on the moons surface. So if the planet was warmer we think life could start there. I dont think it is impossible for life to be there now though because as I have said I think life can exist almost any ware.
    And when you said water is needed as a master solution, how do you know that? We only have the Earth to compare that to. And because we come from Earth it makes no sense to say whats here is needed everywhere.

  • Iron Maiden 95 says:

    Its like doing an experiment and only looking at the control. So when looking for what life needs to survive you could use Earth as a control as you look at other planets with life. But because we have not yet found any other planets with life we have nothing to compare the control to. So saying water is needed makes no sense.

  • scottmdy40 says:

    Does anyone remember the good ole days of Youtube…… back when they had no ads before a video started? what happened to them good old days? I sure miss them before YT became a commercial giant! I can sum it up into one work as to what I think of this modern YT "Sucks"!

  • Iron Maiden 95 says:

    I also forgot to say. We have found organic material on Titan. So it would be much different than us but it could be there. Or be there someday. And your right it is logical to think that life would exist with the most common elements. But what Im trying to say is that it is possible even without those elements.

  • MrMljungholm says:

    When I read your post I culdn't help but to read it in the voice of Leo from that 70:s show.

  • trefod says:

    Yes, I would have liked to try weightlessness and seeing a field of stars without an atmosphere between it and me.
    Whenever we have periods of recession here on earth we turn introspective and start squabbling among ourselves, pointing fingers and blame. We pull funding from things that do not have short term results, our scope shortens, we loose all courage and vision.
    We're in a period of unproductive self loathing, I just hope we recover soon.

  • lastmortal says:

    This channel is amazing! Please keep it up.

  • Phong Tran says:

    Dude mass effect brought me in to this

  • The MSP Duo says:

    This could be there shortest video I think I haven't seen all the videos yet

  • cjs2964 says:

    I would rather watch commercials than have to pay to use youtube.

  • XapoladoColorin says:


  • Blogengezer says:

    My deeply embedded Belief is that 'Heaven', the spiritual sense, will be the Ability to, see up close, travel among and understand all of these marvels… and countless more of every dimension. In my humble estimation, an extremely worthwhile Goal to attain, IF it exists? If not, what have I lost? Even if the odds were 50%, I would risk…..what? People buy Lotto tickets every day based on millions of times worse odds. Good post Rip.:>)

  • EvereTT PIerce says:

    Keep up the great work.!

  • stitch24021 says:

    theatrical BS… it's sad realy… expand u're awareness people, think for u'reselves

  • David Wischropp says:

    All glory to the Lord Jesus!

  • Steve says:

    all this money we're wasting killing each other when we could use it to go to space… *sigh*

  • Marco Yanitelli says:

    What you have 'lost' is a sense of the only reality you will ever experience

  • azmanabdula says:

    "Jupiters moon Europa."

  • azmanabdula says:

    because the same elements exist everywhere…
    just because you go somewhere else in the universe doesnt mean the elements are different : )
    "And when you said water is needed as a master solution"
    tell me what dissolves as many things as water does without being down right corrosive…??

  • azmanabdula says:

    but so far….it appears water is needed…
    so far….

  • Iron Maiden 95 says:


  • Iron Maiden 95 says:

    Im not trying to say that elements are different in other parts of the universe. All Im trying to say is water is not necessary for life. Just because we need it does not mean that its needed every ware.

  • Kyle H says:

    If arsenic based lifeforms can exist, then probably safe to say there just has to be a form of liquid involved to get things moving, and of course all the other circumstances.

  • azmanabdula says:

    then you are going to have find another liquid thats this useful, there might not be another !!
    Chemistry is against you here…

  • REDTEAM22003 says:

    i like the scary music

  • Iron Maiden 95 says:

    Have you read my other comments? Did you see what I said about Titan? Read that. Its proof that water is not needed. If you cant find anything else I was saying Ill just send you a message with proof that water is not needed. I think I have more than enough proof.

  • Kruschpakwins says:


  • Red Thor says:

    Thank you very much for bringing direct imaging to my attention. i had no idea such a thing was currently possible. Did some research and found a direct image of IRXS J160929.1-210524 which was VERY impressive. I suggest you check it out.

  • azmanabdula says:

    well time will tell, sorry to bother you….

  • ForeverFlame88 says:

    This video was so epic I literally felt goosebumps of the awesomeness of human discovery. I didn't just watch it once! 🙂 Go Spacerip! Fantastic job! Subscribe! Share 2 care! 🙂

  • azmanabdula says:

    i confused titan with Europa….sorry.. too many celestial objects nowadays…

  • azmanabdula says:

    hey i could write down any argument for life, but it has to be tested, and for now, your ideas seem highly untestable…
    maybe we could find a molecular biologist/particle physicist to answer these questions….
    you know, by trying to make prions from silicon?

  • azmanabdula says:

    into the ground, if not……where did you come from before birth?

  • Iron Maiden 95 says:

    No problem. Its been a good conversation on this video. Its not easy to find people to intelligently talk to.

  • Truthiness231 says:

    The point he was getting at was there is nothing to suggest we go anywhere when we die except in the ground. There's no reason to think any part of us continues to exist beyond death, nor did this question that at all. And as far as I can see it, there is no reason for that to have to bother a person either. After all, we were dead for billions of years before birth and that wasn't a big deal (I have to say I didn't complain one bit about it) ^.^

  • Truthiness231 says:

    Yeah I would have put in where I paraphrased that last bit, but I was running out of space. Glad someone noticed though ^.^

  • Truthiness231 says:

    "Who's to say we weren't alive as some other life form before we were born?"

    Look up "argument from ignorance" and "burden of proof", the two fallacies I'd have to accept to agree with you (and I don't for the reason you'll find when you research them)

    Outside religion there is no reason to think it's true. Every bit of reality points to the [to some: sad] conclusion that once we die and our brain stops functioning, our consciousnesses is gone. It doesn't go somewhere, it just stops.

  • Russkiy Smiffy says:

    we weren't dead before, to be dead you have to die, we just didn't exist.

  • Truthiness231 says:

    Take it up with Twain ^.^

    If you really want to draw distinctions there – ignoring the literary license ol' Mark was taking there (sad, but if you want…) – then fine: we were non-existent for billions of years before birth and I didn't complain one bit. ^.^

    The point is, there is nothing to suggest that in the end we won't be in the same boat as we were before beginning our lives (non-existent, ie "dead"), and that that shouldn't bother anyone since we all already have been there once.

  • B4TT3RY says:

    Wait till we start naming exoplanets!

  • yeahfree says:

    I beleave we Will find à second earth like planet within 10 years from now :-/)

  • Onifos says:

    Aren't they assuming the planet is moving quickly enough to be back there?

  • azmanabdula says:

    and plutoids….
    or whatever pluto is classified as!

  • nilsen93 says:

    But the closest stars are not millenniums of light years away. The nearest star is roughly 6 light years away, thus its state is not changed that much throughout the course of the journey that the light does

  • azmanabdula says:

    you sure?
    i thought it was named something else, because of its distance to the sun…
    maybe i missed out on something…?!?
    peace dude…..Oh yeah "Kuiper belt objects"
    or was that just Neil Tyson?

  • azmanabdula says:

    no it isnt……not at all…..

  • azmanabdula says:

    the nearest star system Alpha Centaurai is 4 light years away….
    but at current technologies would take years, thousands of years to travel there…
    so you probably are correct….

  • Hopefulfilment says:

    Yup, that would be accurate. Except the planets we can observe is all within our galaxy which is, if I remember, some 100 000 light years across. And the ones we really look at is in our own neighborhood – I don't know the exact figure but I think it is safely within 10 000 light years. Reaching anything but the very closest stars (a few light years) will probably be out of our reach to even attempt for millennia to come and either way the traveling time will prob. be decades or centuries.

  • TheBetterGame says:

    yes, but the planets were seeing now are actually quite close. Some only 12-20 light years away from us. Stars far enough away to be "millenniums" away, they're just too far for us to detect planets. So we're looking much closer.

  • azmanabdula says:

    i was gonna have a look this week anyways…
    spare time XD

  • kiprux88 says:

    Dude 30 years isnt that much… Even 100 or so isnt much, there wont be major changes

  • funkyplasmaman says:

    although your point is valid. it is possible to study the atmosphere's of these planets though spectroscopy. it would be possible to estimate a planets level of technology by looking for chemical compounds that don't develop naturally. if these were found you could be reasonably sure that industrial processes were responsible for there presence. .

  • Comrade Kim says:

    it would take alot for a planet to be destroyed. Even after a nuclear war, some animals or humans can still exist and repopulate the planet

  • EpicNostra says:

    Yes that's why Betelgeuse a star that it's about to go supernova has divided scientist in 2 groups one that believe it exploded and another that believe otherwise. BTW Betelgeuse it's 640 light years away and only one thing it's certain it won't explode this year.So you maybe right you maybe wrong the only thing I believe it's possible for us to travel to those planet is WormHole.Because even with Light Speed they're really far.
    So too late to discover the Earth too early to discover Universe

  • EpicNostra says:

    If we get to the point when we can "Harvest a star" it will be easier because alpha centauri is not that far compared.But yes i got the same thinking the whole this "Physic" is wrong and in the different perspective the one of "Alien" I think it's different. But today scientist have to do so much proves to do something ex. Neutrino surpassing speed of light. But instead of spending money in science people spend in WAR imagine what would NASA,CERN would do with army budget of US,RUS,CHINA…

  • Nothing At All says:

    @H3XCR3ST Your 100% correct. Even if we found one, we might not even know it because the light is so old. We should be looking rather for planets with the right formula to become garden worlds.

  • Nothing At All says:

    Hrm may have jumped the gun. These extra solar planets are not far away. But the idea was correct in relation to an appropriate distance.

  • Sniper King says:

    We will likely never make a journey of over 1000 light years non stop. Also life takes billions of years to evolve to human like levels. 100,000 years = meh little difference.

  • Aram Hassan says:

    My thought is this: The term Time is thought up by the Earthlings. Our eyes do not have anything to do with the time. Time is actually very different. It's like falling into a black hole. You will fall in it, and someone sees you, he/she sees your body falling. For him/her, it's only about 20 seconds before you disappear. But, you will feel and know it's forever. Time doesn't exist, it's only a point which just repeats.

  • Trip GuidE says:

    Its damn sad money isn't poured into space travel .Instead you have your 300 billion dollar jets and for what ?

  • ^yep says:

    I saw this star about 3 months ago when i was on aruba, the star moves very oddly, and somehow it had drawn my attention.

  • ^yep says:

    25 light years, so 25 years ago. Not so much very distant past now is it…

  • ArtAgent13 says:

    So many people are saying that light speed is the ultimate speed limit. I think that it is probably true if you think of the universe as just the three dimensions we can see, and time. Yet the possibilities could shoot out of the roof if we consider that there are many dimensions we are not equipped to see or detect. In those dimensions light speed could be the lower speed limit. There are mathematical models of the universe that show it to be curved and even folded. Perhaps a bridge?

  • Jayrage says:

    so you're talking about a wormhole. nothing new.

  • ^yep says:

    we observe the LIGHT or abstinence or energetic waves to observe a planet. if it was 25 lightyears ago then we see the light of the planet from 25 years back. It can take million years for us to travel somewhere but we can still see that place in a timelapse of a year.

  • ^yep says:

    yes- but the changes are bigger aliens exist NOW and AMONGST us, then that they ever did and where advanced.
    Why? Simple: The chances for our existence are extremely slim. Chances that it happens at random once more are neglect-able. but chances that it happens simultaneously or because of one another- makes the chances grow exponentially.

  • ^yep says:

    I read your name as stonedguy xD wishful thinking they call it haha.

  • allanxbarahona says:

    you watch to many movies

  • AtheistCitizen says:

    2 positions allow modeling an orbit using Kepler's laws and the time to cover the fraction gives indication on the whole orbit duration.

  • Jesus Christ says:

    We can't observe planets in other galaxies anyway, and I doubt we will ever be able to because even galaxies that we consider to be "nearby" are still too far away to discern those kinds of details with any kind of conceivable optical equipment. Not only are planets microscopic specs of dust on galactic scales, but light from the billions of stars in a galaxy create too much glare.

  • Jesus Christ says:

    Scientists look for planets orbiting nearby stars within our galaxy, close to our solar system, within only a few hundred light years or so. Any observations we make from our region of space is therefore only decades or centuries old.

  • Francisco Bz says:

    3:52 batman hehe =]

  • Tragono says:

    I miss being dead.

    Thank you for that oppurtunity.

  • Truthiness231 says:

    We'll all get to return to it one day (death), though considering how long we'll all be doing that compared to living, I'm not in any hurry ^.^

  • Putz4Ever says:

    At this point in time we can only observe planets at a near 100 light years away, hence we are seeing planets 100 years prior to its actually form. I don't think there would be much of a difference, since we where all here 100 years ago.

  • iTzNikkitty says:

    Probably, but sometimes I like to think that there's still quite a lot we haven't figured out about consciousness. Maybe it does actually go somewhere when we die. Don't get me wrong, I'm not just spewing out a bunch of religious bs, hell, I don't even believe in god. But it's a fact that we know next to nothing about consciousness, so there might be a chance that you do go somewhere. It might not be true, but it's just something that makes me feel better.

  • Truthiness231 says:

    See: Argument from ignorance (we don't fully understand nor have conclusive proof of what Earth's core is, but I'm not about to start by suggesting it could be goat cheese)

  • Rex says:

    we are searching for patterns , there are no facts out there.

  • colhom 1 says:

    you're forgetting 1 thing – we would be observing the planet 25 years in the past, since it's 25 light years away

  • morning morality says:

    true but that does not mean we shoul stop looking in fact even if they were to kill themselves in some war as long as they leave evidence of there excistence by the time we get there it will be a great discovery

  • James Lloyd says:

    Your ponderings are, as human ponderings tend to be, ethnocentric. Simply because another civilization may develop on another planet does not mean that they are likely to be auto-destructive and warlike as we are. There isn't even a basis for assuming they will be carbon based, much less similar in cultural development.

  • treejoe4 says:

    There is still good reason to think it, animals which are aggressive and dominant are more likely to become top like us, same logic would probably apply to aliens.

  • TheWeeaboo says:

    They arent looking into other galaxies to find planets, they are looking into other star systems. Huge diffrence in distance.

  • Isac Erlandsson says:

    Was I the only person hwo thought Eye of Sauron at 1:37?

  • elmalacopa says:

    did you actually get an answer on this? so we are always looking at a distant past eh, so the map of the universe is not that true at all unless you consider time pretty much

  • PeterLiuIsBeast says:

    unless whey werent carbon based to begin with

  • Craig Bell says:

    I think your spot on with that Spacerip

  • josh matos says:

    Im sorry dear ddpsp but I suggest you to read a book about Sociology and Human Behavior, they may be different to us but they will develop concioness and a Brain, and may lead to wars and other problems, because if animals kill themself why shouldnt we or they?
    P.S sorry for my bad english.

  • James Lloyd says:

    It stands to reason that any species which has managed interstellar travel is likely to have overcome internal strife and warfare before doing so, considering the resources an ingenuity consumed by such things. Indeed, it is the gross misallocation of our own resources, technology, and effort which is the sole reason that we are not yet a space-ferring race ourselves. It follows that a race which has found internal peace is more likely to extend into the cosmos with a modicum of outward peace.

  • josh matos says:

    I can agreed with you . But conflict is never gone,and less when your exploring a universe,and conflict with your own race is very inevitable.

  • PsiOptic says:

    It stands to reason that this is also NOT true. After all, let's consider our government who has made a massive effort to keep secrets. Until we can prove they don't have tech can travel in space, unlike what we know of, then it is plausible.

    If so, then, logically, it doesn't mean a civilization has to overcome those obstacles. It just means that only the elite and rich get the honor of traveling in such ways.

  • Chibiabos Wolf says:

    Why would that stand to reason? Can you show how our own technological progress has reduced, at all, our own species' strife with itself? I honestly have not measured it, but as brutal as the Romans were, I don't find atrocities committed within the past century as being in any way lighter than those committed 2000 years ago.

  • tancred25 says:

    or possably implode

  • tancred25 says:

    Gawd, I love SpaceRip……..wish there were more

  • SeedlingNL says:

    I would have to disagree there. It's the very gross misallocation of resources and technology that drives human progress and prosperity. Periods of war spark new inventions in record time, while periods of peace allows us to build on that. This pattern is so ingrained in our race, that if we lack war for too long, society starts to self-destruct in search of conflict.

  • Chaitanya - mly, Asia says:

    IS very good

  • The Senate says:

    oh space rip you tease me

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