Can we build a telescope that can see the lights of an Extraterrestrial City on another planet?

1 Answer

Answer :

It’s not impossible, but the secret to resolving smaller details at greater distances is to increase aperture size. It’s easy to do this with radio astronomy as you don’t need a single gimungous antenna; a series of smaller antennas spread out will work just as well (VLA). But to apply the same principle to the visible light spectrum is a challenge.

Related questions

Description : If an extraterrestrial visited Earth, and made contact with you, what proof would you need to believe they were genuinely not from this planet?

Last Answer : Do they look like human beings?

Description : How did the New Horizon Telescope capture the image of a black hole? -Space

Last Answer : Using the Event Horizon Telescope, scientists obtained an image of the black hole at the center of galaxy M87, outlined by emission from hot gas swirling around it under the influence of strong gravity near its event horizon.

Description : Name the extremely remote celestial object, emitting exceptionally large amounts of light energy, and typically having a star like image in a telescope. -Space

Last Answer : answer:

Description : The Event Horizon Telescope required multiple telescopes, with split-second synchronization, to capture the image of the M87 black hole. How many telescopes were used? -Space

Last Answer : Recognizing their vision and leadership within the Event Horizon Telescope (EHT), the National Academy of Sciences (NAS) awards Shep Doeleman and Heino Falcke the Henry Draper Medal. ... a recent, original investigation in astronomical physics of sufficient importance and benefit to science.

Description : The Event Horizon Telescope captured the now-iconic image of the M87 black hole. Why is it called that? -Space

Last Answer : The new image is the stunning achievement of the event horizon project, a global collaboration of more than 200 scientists using an array of observatories scattered around the world, from Hawaii to the ... s black hole in April 2017. It then took two years for scientists to assemble the mugshot.

Description : If you stood on the dwarf planet Ceres, (Assuming you didn't die) How well would you be able to see each planet with the naked eye?

Last Answer : About as well as you can see any other planet from earth.

Description : Why does my room get dark when I turn the lights off even if my window is shut? -Space

Last Answer : Light does not go away by leaking out through doors and windows. Light goes away by being quickly absorbed by materials and converted to heat and other forms of energy. In contrast to wind or smoke, light has ... 01/23/why-does-my-room-get-dark-when-i-turn-the-lights-off-even-if-my-window-is-shut/

Description : If humans were stranded on a foreign planet how would we be treated?

Last Answer : No. Everyone knows we are the only life in the universe.

Description : What would happen if equal to Charon's mass was added to the dwarf planet Pluto?

Last Answer : Your question is confusing. Add the mass? The system already has a combined mass. And if you're asking about a body of the mass of Charon and Pluto combined, the center of mass is should be ... Or are you asking about combining a body of Charon's mass with Pluto while Charon remains in orbit?

Description : When can you say that you're 'at' a planet?

Last Answer : When the Martian FAA gives you permission to dock.

Description : Why is Pluto not a planet?

Last Answer : It’s a satellite of whichever planet comes before it. Even while Pluto was considered a planet, it always had an irregular orbit, which has apparently been decided is an irregular satellite obit; instead of just obiting the planet, it orbits the sun as well.

Description : Can a star turn into a planet? -Space

Last Answer : Yes, a star can turn into a planet, but this transformation only happens for a very particular type of star known as a brown dwarf. Some scientists do not consider brown dwarfs to be true stars because ... uses up its heavy hydrogen, goes dark, cools, and spends the rest of its life as a planet.

Description : Have black holes had any influence on our planet? -Space

Last Answer : Thankfully, though, we don’t need to worry. There are no black holes close enough to Earth to affect us. The closest black hole to Earth that we know of is named V616 Monocerotis. It is ... in your lifetime. V616 Monocerotis is about 3,300 light years away. That’s very, very far away.

Description : Why we see it as a black hole? Why can't it be a space with absence of visible spectrum? -Space

Last Answer : The bending of light around a black hole is very significant because of its extremely large mass. Because of this bending, we see light from material that is behind the black hole, which we would not see if light were traveling in straight lines

Description : Can you see a black hole? What does a black hole look like? -Space

Last Answer : We can not see black hole without naked eye but the closest known black hole to Earth with the naked eye. There is a black hole in our backyard. Astronomers have found the closest black hole yet at just 1000 light years from Earth, close enough to see the stars that orbit it without a telescope.

Description : Did we get a message today recently from outer space?

Last Answer : Reading the article, it points out that it could be quite a number of things. I wouldn't put my money on it being a signal from an extraterrestrial species. We have received signals in the past that we ... it being aliens only for it to turn out to be a pulsar (a rotating neutron star) or something.

Description : If we were to redo the Voyager space probes with modern technology then what would be the difference?

Last Answer : Everything would be better except for the power supply. The original probes were basically nuclear powered. Can’t really get away with launching radioactive materials these days.

Description : Do we really need a Death Star?

Last Answer : Saw that petition a while ago around the time it hit goal. I love the official White House response to it lol

Description : Should we send people to Mars if it is a one-way trip?

Last Answer : Glen Beck?

Description : Since a star's light takes so long to reach us, how do we know that the star is still there? -Space

Last Answer : We don't know that it is still there. For all we know, the North Star or any other star could have been ingested by a passing black hole years ago. (Although this is highly unlikely, it is ... years ago. It is entirely possible that some of the stars you see tonight do not actually exist anymore.

Description : How do we spot Black Holes? -Space

Last Answer : Peppered throughout the Universe, these "stellar mass" black holes are generally 10 to 24 times as massive as the Sun. Astronomers spot them when another star draws near enough for some of the matter surrounding it to be snared by the black hole's gravity, churning out x-rays in the process.

Description : What do we call the boundary around a black hole where nothing can escape its gravity? -Space

Last Answer : The boundary of the region from which no escape is possible is called the event horizon.

Description : How can we learn about black holes if they trap light, and can't actually be seen? -Space

Last Answer : The immense gravity of black holes also distorts space itself, so it is possible to see the influence of an invisible gravitational pull on stars and other objects

Description : Explain why we use models in science.

Last Answer : To look at things that are too big or too small to work with normally. To make something complex simple 

Description : Is a horse trough good for 20 chicks?

Last Answer : As their permanent home? As a place to hang out for awhile? You need to be more specific.

Description : What is the temperature on the ISS (International Space Station)?

Last Answer : It's apparently about 24 degrees C. The heating system is probably both very simple and hilariously complicated depending on how you look at life. Think about it - it's a sealed box surrounded by ... it's minus 247. The trick is to keep hold of the heat you produce without cooking everything.

Description : Within the deeper craters of the dark side of the moon, would it be possible to have an 'atmosphere' of any gas within this crater?

Last Answer : There is no such thing as the dark side of the Moon, or at least there is no area that is always dark. The Moon has a side that always faces Earth. When we see a full moon, the far side is ... in the dark, there might be a very thin atmosphere, but not much since the Moon's gravity is fairly weak.

Description : Forget about the price. Would you want to be launched into space for 10-15 minutes and be weightless? What a rush!

Last Answer : Nope. I hear a lot of people throw up. No thanks.

Description : The ”100 item Challenge 2017 edition”, how well could you do it?

Last Answer : answer:This is all my shit….. I do have kitchen stuff but that is only a few plates and bowls. http://imgur.com/a/4hlS3

Description : How much dollar wise did the SpaceX shuttle disaster cost?

Last Answer : According to Wikipedia the development cost was around 850 million. I would expect the cost of a single rocket to be much less. My hunch is around 200 million for materials and labor of assembly.

Description : Now that a probe has been landed on an asteroid, how far off is mining one for whatever riches it has?

Last Answer : They are already mining the riches on the asteroid. They are probing for valuable scientific information.

Description : Is there any chance the moon could become the new Australia?

Last Answer : We’d have to be able to build something on the moon first. We’re a long way from being able to do that I think. Haha but what does that have to do with Australia?

Description : What is a blue moon?

Last Answer : answer:Here is what I found on Wikipedia: A blue moon is an extra full moon that appears in a subdivision of a year, either the third of four full moons in a season or, recently, a ... ; e.g., when there are volcanic eruptions or when exceptionally large fires leave particles in the atmosphere.

Description : What is a "super moon"?

Last Answer : It happens with the full moon at perigee. Since it is at its closest point to the Earth in its orbit, it looks bigger and it also has a stronger effect on tides.

Description : Does anyone know what's up with this comet Ison thing?

Last Answer : answer:It’s a comet that is traveling through our solar system and is on a path to slingshot around the sun (during which process much of it’s busk will melt, in fact it could melt entirely). If it doesn’t, it will be visible at early morning hours in December. Nothing else. More Reading

Description : Are survivalists like Doomsday Preppers building shelters in outer space yet?

Last Answer : If they’re smart enough to build a vast financial empire, they’re probably smart enough to realize that there’s not much that can be done to fight the end of the world. A bunker is probably a lot safer and more practical, perhaps a lair in a volcano would be even safer than that.

Description : Can space junk be mined for metals and minerals?

Last Answer : Right now the cost to do it would outweigh what they could get for it. And it can also be pretty dangerous I would guess, too. It would be a good idea to get it down. What kinds of materials are ... I could imagine how some of our frenemies would feel if we snaked some of their old stuff to look at.

Description : How would you react if a meteorite hits your town like it did in Russia yesterday?

Last Answer : Search the crashsite for aliens.

Description : Can anyone give a good explanation of Zeno's paradox from a physics point of view?

Last Answer : answer:This gives a pretty good explanation and includes the wise observation that Any paradox can be treated by abandoning enough of its crucial assumptions. Head down to the paragraph that starts For Zeno' ... takes or doesn't and takes the one space next to it would be a Planck length.

Description : What is the gist of having landed rover on the Gale Crater?

Last Answer : answer:Battery info here. (14 years) I’m not really sure what you are asking. Are you wanting to know why that spot was selected to land or why we even tried putting something on Mars?

Description : Which planets can be seen from Earth with the naked eye?

Last Answer : Mercury, Venus, Mars, Jupiter, and Saturn

Description : Have you ever felt violated?

Last Answer : Yes. I most definitley felt violated a few years back when a foriegn guy in a foreign country scarred me for life and ruined my holiday when he jumped me and kissed me. With tongue. (shivers) I didn’t even do anything, I was 12 or 13? at the time :/

Description : How long would an astronaut last in space if they were separated from the station and drifted off?

Last Answer : Around 7 hours before his oxygen system will give out.

Description : You return from a 520 day during mock Mars mission; what is the first thing you do when you come home?

Last Answer : Call the doctor about that erection that has lasted WAY more longer than 4 hours.

Description : How can space expand between individual hydrogen atoms? [Strange Universe Series, 2011]

Last Answer : Gravitational force becomes weaker over distance (inverse square). Also, gravity is the a very weak force. You can not even measure it in small scale (a.k.a sub-atomic scale). It does not help either that ... of add up, is enough to still be bigger than the ZPE's pressure of the space between them.

Description : How much easier would a Mars manned fly-by be over a manned Mars landing and return mission?

Last Answer : Significantly. The work and development required to land on a celestial body and then take back off from it, is far greater than the work to just fly by one. Not to mention the gravitational pull ... on Mars are far greater than anything the moon has, lifting back off would be much more complex.

Description : What is distance?

Last Answer : Distance = Velocity x time…Sorry-I know that’s not what you wanted…:)

Description : What does void mean?

Last Answer : There is always something everywhere… If not matter than Dark Matter or Dark Energy… and in an 10 dimensional universe everything is possible…. in your case void might be undetectable emptiness.

Description : If Space is emptiness, what does gravity grab to bend it? (Strange Universe series)

Last Answer : answer:Well, if we accept some of the string theory perceptions of the universe, considering that there are 10 or 26 dimensions aside from the three we clearly and fourth we kind of see what we perceive ... the math at this point to see what's really there. Then again, it could just be leprachauns.

Description : Are manned missions necessary and feasible to other planets and exo-planets?

Last Answer : I asked a similar question specifically about the planned mission to Mars. The Mars rovers were spectacularly successful, exceeding all expectations. I don't see why we can't do more of the ... require oxygen or comfortable temperatures. It makes so much more sense to use them instead of humans.