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This is a totally awesome idea. Audacious, but in principle within our reach. And wow – just think what a rush it would be if we got a good map of such a world and detected the night lights of cities! Probably unlikely, but who knows?
Good luck to NASA getting funding for that while USA & Israel invade every country on earth
100 atoms thick? Okay. Uh huh.
If the vehicle would have the sail, how would it "brake" at the focal point of the gravity lens.
I mean it would just fly by the point, take some pictures at the point and then just f off into open space?:]
How would this compare vs digital optical interferometry in terms of likelihood (in the next few decades) and potential resolution?
bit of an aside and not really related to this one, or rather all of the videos and astro channels and even papers, but can we please do away with the au? just fells like the whole inch thing all over again, when we have the perfect units of light time. and i know it´s not hard to do that in your head but it really shouldn´t be neccessary to subsititute 1 au with the proper 8 light minutes.
and for everything past a lightyear we do that anyway already so why not, use that below that as well? we have the hole date and time range available to cover all ranges just put light in front and there you are, simple, elegan,t evocative and based on something truly universal.
What is a NASA NAIA program?
If I put the idea presented in this episode together with the Fermi Paradox, it seems to imply that there are no advanced civilizations within 100 light years of us (which I gather is the approximate limit of how distant targets could be for the SGLF to resolve images of them), because if there were, this telescope concept would have occurred to them as well, and given enough time, they would eventually get around to pointing their star-sized telescope at us, revealing to them a world that would be very compelling to visit. So it seems that because we have not had such visitors, it suggests that nobody has pointed an SGLF at us, which is more evidence that there's no one out there within 100 light years of us that could make an SGLF.
I wonder how small an object could be distinguished. Imagine if we could pick out herds of creatures–or even the individuals–on nearby exoplanets.
…and since it's possible for Earth to pass through too, I'm also imagining a scientist taking a test selfie, lol
omg i want a SGFL telescope now! That sounds absolutely amazing!
Imagine building one of those on the sweet spot of a supermassive black hole, what kind of magnification would THAT give you?
This is pretty clever
any way to capture the light from the earth several millions of years ago to see how it was back then?
I want that telescope. Now.
2 cents… The moon is right there, and we don't see half of it. NYC is "only" about 1200 sq km. Underestimating, 1700 km radius of the moon, 3.8 million square kilometers…Limiting it to about 1 million square kilometers, that's more than 500 lenses possible. And Mars has twice the radius, much more to work with!
This seems about a billion times harder than Luke dropping photon torpedoes into the exhaust port on his Death Star trench run.
Wouldn’t we try this on one of the gas giants first?
This is legitimately one of the coolest videos on this channel. I had no idea that something like this was anywhere CLOSE to being feasible yet. If you had asked me for an estimate on how long it would be before missions like this would be possible, I would have said something like 100 years from now.
On the fine structure constant this just proves the speed of light is variable. If gravity can bend light it can slow it down.
If no one else has said it, then It's Probably (Not) Aliens.
You could make a podcast out of that!
One question seems obvious: Why not use the other big masses in our solar system (e.g. moon, earth etc.)? Is there maybe something like a mass-to-ratio limit, were gravitational lensing is in conflict with the size of the lensing mass?
Considering that black holes, in addition to lenses, are also mirrors, we could obtain the image of the Earth, in the past, from black holes of stellar mass close to the Earth. This way we could test the algorithm to recover the image using VLTI to observe black holes less than 100 light years away. The VRO should find several of these objects from 2025 onwards.
#HospicioToday
Hey Matt,
How about a reverse-facing telescope, so that when they are at the appropriate distance we can also map the Kuiper Belt and Oort Cloud? 🤔
❤👍
It'd be cheaper to build SETI on the dark side of the moon…
@PBS Space Time can you get with Lockheed Martin on this? they have anti gravity! build this vehicle with them please!!!!
Question:
Couldnt we use the lensing of other stars of which their focal points are closer to earth to get the same results?
For example lets say a planetary system that is lensed by Proxima centauri?
3:34 "My disappointment is immeasurable and my day is ruined"
Jokes aside that was a genius bit.
I wonder if it would be possible to do the same thing with earths gravitational effect or if it would be too weak to create lensing
"To hit the right spot the craft will maneuver with tiny ion thrusters. Once in the zone, the craft deploys its telescope. One possibility is that multiple craft will assemble into a larger scope. It may even be possible to repurpose the light sail as a mirror, if we want to get really clever about this." 10:45
Am I the only one who heard that and got slightly aroused? Also 17:50, i dont think he noticed the hand gesture and the words he was saying lol
really coo idea!
I think Cool worlds had two more practical first projects, building a Earthscope and a Jupiterscope first.
Lol nubes, infinite times. Respect. 😂
LOL.. "..a missed opportunity if you ask me." I seriously that it was the real name for a moment because for all the awesome super powers of scientist, naming entities and projects is NOT one of them.
I hate these clickbaity arrows on the thumbnails. PBS, you're better than this.
Imagine building a swarm of these at tremendous cost, then waiting 25 years to finally get a look at that sweet, sweet exoplanet…. And all you see is Venus-style cloud cover.
this is straight out of the three-body book.
Phase III – NICE! So, things are chugging along nicely. And, unlike chemistry, where you have to convince a major producer to retool an entire plant at the cost of millions or billions of dollars for a 10% gain in efficiency, all you have to do in this case is convince an organization of dedicated science geeks that photographing exoplanets would be really cool. Doesn't seem like a heavy lift.
I think its more easy to i win the lottery even if i dont play ,than to build this telecopes 😅
Sounds Amazing!… Can it be posible to use this approach using giang planets like Jupiter or Saturn Instead of the sun as a proof of concept? would it be feasible or easier to do?
They're going to slingshot around the sun? That's quite the enterprise.
and for the next planet we will have to wait another 30 years?
The exoplanet is also orbiting it's host star which will move it's image. So many factors. This is going to require a pretty complicated navigation function.
😮😮😮well information 😮
oh man I actually believed that hocus pocus thing for a moment 😅
I say let's do it
"We've only just begun…"
Theoretically, if a comet or something was in the EXACT correct spot, wouldn’t we be able to see it on earth during a solar eclipse?
I know we are only 1 AU away from the sun, but doesn’t that just mean that the object we want to detect would have to be close to us.
Also what would that look like on earth? Would we see an Einstein ring of the asteroid on earth? Would we need a telescope to see it?
Wow, this was amazing!!! 🙂
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