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Questions tagged [interstellar-travel]

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What do we see if we observe the spaceship coming from a planet that's inside the event horizon? [closed]

Well, after watching the movie Interstellar, I just ask myself: What would I see if I observe the ship that Cooper and the other girl in, coming from the planet inside the event horizon of Gargantua? ...
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1answer
85 views

Constant acceleration space travel and speed of light in ship's reference

In a constant acceleration travel like depicted here, it is said that after some months of acceleration at 1g, in the ship reference frame, we would be going faster than C relative to Earth, ...
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2answers
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What are the options the human civilization will have before Sun gets brighter by 40% within next 3.5Billion years? [closed]

In next 3.5 Billion years, the sun will become 40% brighter, causing the oceans to dry up, and conditions for life sustainability shall become so critical that human must leave our solar system ( or ...
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2answers
84 views

Path to a distant star

Suppose we have a space ship that can go fast enough (0.9c) and we have plenty of time, and we want to travel to a star on the other side of the galaxy. How do you plot a path to navigate to that star?...
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1answer
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The interstellar medium reflects extremely low-frequency radio waves. Could we use this fact to build a more efficient photon rocket?

According to the equations of MHD, electromagnetic waves cannot propagate in a plasma if they are below the plasma frequency. (For more information, see this question about astronomical-wavelength ...
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How much power required for a schwinger pair production

I heard of a fascinating interstellar travel project, using antimatter. It's called VARIES, or "vacuum to antimatter rocket interstellar exploration system". The concept is to harvest the "schwinger" ...
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1answer
45 views

How can one feed a small black hole against 1 TW of Hawking radiation's radiation pressure?

This question was inspired by an old post here on meta, about a previous question of the same type that had been removed because it "had too much science fiction", in particular the author added a lot ...
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4answers
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How long would it take, using existing technology, to travel 40 light years? [closed]

The exciting discovery of 7 earth-like planets 40 light years away raises the following question: If an exploration mission is scheduled to one or more of these planets in 2017 to find a possible home ...
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1answer
90 views

Why the space suit looks white in Millers planet in the movie Interstellar? [closed]

The accretion disk of Gargantua (the black hole in the movie) is red (or orange) in color (probably because of red shift due to intense gravity?). And the Millers planet is revolving around this black ...
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0answers
68 views

Space travel - communication of the arrival time

I have a particular passion for space travel and so, for fun, I'm trying to identify the possible problems in comunication systems for a spaceship that moves at sensible fraction of speed of light in ...
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1answer
995 views

Is space travel really possible?

Just a thought, does not relate to actual physics If the universe is really expanding, then if we send probes to distant locations in the universe with earthly data, then will the probes ever reach ...
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2answers
293 views

So what happens to your personal time and space, exactly, when you get close, or even match, the speed of light?

1g seems to be the value of choice. We get on the ship with sufficient fuel to provide 1g acceleration for a century. Off we go, aiming for some distant star or galaxy. Let's call this star Jeff. Let'...
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0answers
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Locating a possible habitable zone in an ordered hierarchal septenary star system?

I'm writing a story about potential off-world colonization in the dawn of interstellar commerce, and despite such a plot necessitating some degree of FTL travel I'd like to keep the rest of my science ...
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2answers
960 views

Relativistic Rocket Fuel Requirements

I am trying to reconcile two different calculations of fuel for a 1g constant acceleration/deceleration trip to Alpha Centauri. One found here (http://math.ucr.edu/home/baez/physics/Relativity/SR/...
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1answer
78 views

How would one attach black hole to starship in the Black hole Starship model? [closed]

A black hole starship is a theoretical idea for enabling interstellar travel by propelling a starship by creating an artificial black hole and using a parabolic reflector to reflect its Hawking ...
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3answers
198 views

What the live streaming of a time traveler will look like?

Consider a hypothetical situation: In which a time traveler travels in a spaceplane at close to speed of light circling the earth and I get a live telecast of inside of that plane to my television. ...
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0answers
351 views

Will future spaceships for very long distance rotate?

I have seen in the movie Interstellar and The Martian they use the model of spaceship which rotate around it's axis. This is the spaceship model from Interstellar. This is spaceship model from The ...
2
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1answer
374 views

Is near light speed travel possible? Likely?

I was contemplating the possibility of sending an interstellar probe that can produce results in a reasonable time frame. For such a mission to be realistic, the spacecraft would have to travel at ...
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1answer
267 views

Take advantage of time dilation or create a warp drive? [closed]

It is my understanding that time dilation slows down perceived time relative to the outside of a given vessel as it approaches the speed of light. Does that not mean that the inhabitants of said ...
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1answer
566 views

Constant Jerk Relativistic Rocket [duplicate]

A quick google search will give many helpful pages and calculators regarding constant acceleration relativistic rockets, but my question is somewhat different. What if jerk is the parameter to be ...
0
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1answer
122 views

Question about Voyager 1

Voyager 1 is currently travelling at 38000 miles per hour in interstellar space. Of course, in a few years time all its functions will eventually shut down but it will remain at the same velocity of ...
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0answers
79 views

Getting signals from a probe light years away

Is it only because we don't have fast enough spacecrafts that we don't send probes to nearby stars? Do we have sufficient radio technology? If a probe like new horizons was as far as the nearest stars,...
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1answer
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Is the fifth dimension of Interstellar the same as Block Universe theory? [closed]

Is the movie Interstellar (2014) referring to Block Universe theory of space-time with its concept of a fifth dimension?
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1answer
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Acceleration format and interstellar units

Calculating with m/s$^2$ is very helpful when dealing with acceleration on the human range, as accelerating from rest at 4 m/s$^2$ for 3 seconds will give a velocity of 12 m/s. g is also a very ...
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1answer
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If it takes less than a year to accelerate to the speed of light at 1g why will it take the Voyager 10,000 years to reach Alpha Centauri?

Today I was doing my physics homework and there was a problem involving a space ship falling at 9.8 m/(s^2) to simulate gravity, and it asked how long would it take for the ship to reach to speed of ...
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2answers
751 views

How would you connect a destination to a wormhole from your starting point to travel through it?

Lets say it was possible to create as massive traversable wormholes as we want. Say we started from earth and wanted to cross to alpha centauri. How would I create the wormhole so that it leads ...
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5answers
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Spaceships travelling through space and debris

How can a spaceship travel through space if there is space debris flying around at very high speeds? Wouldn't even a small rock crack through the spaceship?
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1answer
1k views

Finding interplanetary flight trajectory using calculus of variations?

Consider two orbits $x(t),\space y(t)$ representing the origin and destination for some spaceflight of interest. These could be, for example, cycloids describing LEO and another orbit circling, say, ...
3
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1answer
337 views

micro black hole forces

A black hole would radiate mass optimally for interstellar-travel applications in the range between $10^7$ and $10^8$ kilograms. Assuming a light-only radiation emission spectrum, with a parabolic ...
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3answers
675 views

What sort of propulsion would we require for interstellar travel?

Further to this question I asked recently, lgritz makes a very astute observation about the massive fuel requirements to travel 36 lt yrs with known fuel technology today. So, if conventional rocket ...
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3answers
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How long does it take to travel 36 light years with tolerable acceleration and deceleration?

The recent discovery of HD85512b only 36 light years from Earth has promising attributes to harbor life. Assuming we want to travel there, we cannot instantaneously jump to light speed, (StarTrek ...