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-1
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0answers
30 views

How can a polar orbit of a satellite be achieved? [closed]

I mean an orbit in which the satellite is above antarctica on southern hemisphere and above arctic circle in northern hemisphere? I guess it won't be possible to be exactly above the axis but closer ...
1
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2answers
62 views

Can AMO physics be applicable for space travel? [closed]

I know it sounds very stupid question. I am working on the AMO physics (Quantum Optics). I recently saw articles about the Spacex, and I thought it is really amazing, and thinking about the possible ...
3
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2answers
80 views

Why are they building eLISA and what implications would it have?

I understand that the next step after LIGO is to plan and build eLISA, I understand that out in space there are a lot less interferences compared to Earth which makes it a good way to detect things we ...
4
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2answers
168 views

What will happen to a human being exposed to Martian atmosphere?

Mark Watney, in the movie The Martian, says that, If the HAB breaches, I'm just gonna, kind of... implode. The corresponding novel, by Andy Weir, says he will explode (as pointed out by @...
1
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1answer
63 views

How to calculate max temperature craft needs to withstand near the Sun

The Solar Probe Plus fact-sheet states that the craft will approach to the distance of 9 solar radii to the surface of the Sun (Approx 6.26e6 km) and its heat shields must withstand 1644K of heat. I ...
1
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2answers
142 views

Does the International Space Station always travels in the same path?

From the 3d visualization http://www.satflare.com/track.asp?q=25544#TOP (the right image with the red line indication the path of the ISS) it looks like always the ISS takes the same path. Is it the ...
6
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4answers
2k views

Could we launch a missile from a planet with the mass of Jupiter?

If the Earth had the mass of Jupiter, would we be able to launch a space missile ? Is there a formula to calculate how the launch of 1-Kg payload increases with gravity?
5
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0answers
181 views

Why do they think WT1190F is low density?

A piece of space debris WT1190F is in the news in part because it has been far from earth (farther than lunar distance) in the past but will re-enter earth's atmosphere in a few weeks. See this open ...
1
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0answers
331 views

Does the “luk” space suit in Seveneves make sense?

Tiny spoiler of the book Seveneves ahead. Early in the book, the Russian space agency develops an onion-like space suit called the "luk" (the Russian word for onion). It works like this: A ...
0
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0answers
72 views

Has New Horizons' visit to Pluto taught us anything deeper than mere… facts?

There's a lot of interesting stuff coming from New Horizons about Pluto, but are we actually gaining any non-trivial scientific understanding from it, or is it all just "oh neat, Pluto has mountains ...
1
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1answer
184 views

How many days it takes to travel to Cygnus? [duplicate]

BACKSTORY I read today newspaper and made discovery of planet Cygnus (in news paper of course :v) that human can live there! The distance is 1400 Lightyear. Assuming I travel with the world fastest ...
1
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1answer
353 views

Effects of relativity on New Horizons spacecraft

How much would an atomic clock on board the new horizons spacecraft drift in comparison to an atomic clock on the surface of the earth near the equator after the spacecraft's 10 year journey to Pluto?
2
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1answer
87 views

How does NASA determine the position of their probes?

I'm currently following New Horizons visit to Pluto. I'm just wondering how does the Probe/NASA determine the Position of the Probe? I would assume using earth's GPS wouldn't have the necessary ...
5
votes
1answer
144 views

ISS live stream 'experiments' explanation

I am not sure if this question would be appropriate on Physics.SE (or SE in general) so please redirect me if necessary. I have been recently watching some of the International Space Station live ...
2
votes
1answer
98 views

How is possible to hear mechanical sounds in space?

In the footage taken by U.S. astronaut Terry Virts during spacewalk (EVA) on the International Space Station on 25.02.2015, sounds can be heard while in space. I can understand "shaking" sounds while ...
1
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0answers
115 views

Has the Pioneer Anomaly been experienced by Voyager?

I came across the Pioneer Anomaly recently, and a quick search here showed there now a theory that fits everything observed. My question is, should we expect a similar effect from the design of the ...
1
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0answers
121 views

Are the Voyager spacecraft rotating in space or are they completely still?

Are the Voyager spacecraft completely still (fixated) when travelling through space or are they a little unstable because they are travelling at high velocities?
2
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2answers
376 views

What are the main issues that are preventing a human mission to Mars? [closed]

Is it just because it'd be very expensive? Or are there serious problems that need to be dealt with, studied and solved? If so, what are they?
1
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0answers
59 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,...
0
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2answers
387 views

What's the advantage of NASA's flying saucer over traditional aerodynamic models?

NASA has recently tested a saucer-shaped spaceship. What's the advantage of this new design over traditional aerodynamic designs? The test launch was performed from within atmosphere which would ...
0
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0answers
66 views

What “time” is it for or on Voyager 1? If you could be “still” in the Universe who fast would time be? [duplicate]

I just sent this to JPL but am not putting all my eggs in one basket so thought I would try some other clever people. :-) I think about physics and space quite a lot but I'm not a maths genius so do ...
0
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2answers
141 views

Regarding space launch hazard and near earth debris [closed]

I have saw this picture in wikipedia and I begin to wonder why doesn't current space launches take consideration of avoiding space debris, as say you want to sent a robotic mission to mars, during ...
3
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1answer
1k views

how does international space station change its orientation?

In what way does the rotating gyroscope help in changing the orientation of the international space station in space ? Is there any other way to change the the orientation of ISS ?
4
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3answers
185 views

What can we learn about physics by doing experiments at the end of the heliosphere?

My question is very naive, as I do not know cosmology and astrophysics. I am asking it just for general curiosity. All of us know that Voyager I is now going out of heliosphere, and now sending data ...
3
votes
1answer
146 views

How is it the Voyagers are a few seconds closer to Earth than earlier?

The Voyager 2 tweet of March 01, 2013 put it's distance at 14 hrs 04 mins 23 secs of light-travel time from Earth. A more recent (earlier today) tweet says it is 14 hrs 04 mins 22 secs of light-travel ...
2
votes
1answer
196 views

What if Felix Baumgartner went the other way?

How much harder would it have been for Felix to use some powered sled and head for the ISS when he stepped out of his capsule? He was already above most of the atmosphere. BTW, Is that capsule still ...
1
vote
1answer
219 views

How do they point a camera on a space probe?

When a probe like Voyager 1 is sent into deep space they are able to point the camera at the planet and its moons and take pictures. How is the camera pointed at the object? Is the camera fixed to ...
2
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0answers
107 views

What's the point in shooting down space debris? [closed]

From this news item on a planned North Korean satellite launch comes the quote: The Japanese government has pledged to shoot down any debris that falls over its territory. To me, that sounds ...
8
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4answers
3k views

What Problems for 50 year space probe to Alpha Centauri?

I'm thinking speculatively. NASA is doing experiment with ion thrust tech. Assuming, that inside the next 5 years, we could create a probe which would take on the order of 30 to 50 years to reach ...
10
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2answers
2k views

What happened to Apollo's Saturn-third-stage rockets?

I read recently the original Apollo 11 press release and it mentions that the Saturn V's third stage (used for Trans-Lunar Injection) was deployed into a solar orbit of some kind: (Source: Press ...
2
votes
2answers
216 views

Where can I find information on space navigation, and the people who pioneered it?

I'm doing a paper for school about space navigation. It's an interesting subject, but upon searching google, all I could find were non-detailed explanations of astrophysics that I think are meant for ...
10
votes
2answers
191 views

Why did the WMAP mission last so much longer than Planck?

NASA endorsed 9 years of data taken with the Wilkinson Microwave Anisotropy Probe (WMAP). The High Frequency Instrument aboard the Planck satellite ran out of coolant at the start of 2012, after about ...
4
votes
1answer
77 views

Have Sterling Engines Been Used In Outer Space?

I was reading about Stirling Generators having potential applications for power generation in outer space. Have Stirling engines ever been sent into space?
3
votes
2answers
153 views

What is stopping us from stick building a space station?

I want to understand why we do not build space stations in a similar way that we build a home, piece by piece. Instead we construct modules on the ground and fly them up. Are there some technical ...
3
votes
1answer
107 views

Cassini: What information could be gained from the 2017 impact with Saturn?

First of all: Will Cassini be operational in 2017 (pending no unforeseen equipment failures)? Power Communications ... What information could we gain? Properties of Saturn How to build more ...
7
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2answers
4k views

Where are the Voyagers going?

Given enough time, where are the Voyager spacecrafts heading? (Assuming some alien civilization doesn't pick them up.) Will they pass by any interesting stars on the way to the black hole at the ...
8
votes
3answers
903 views

How can Voyager 1 escape gravity of moons and planets?

I think this one is pretty simple so excuse me for my ignorance. But since most planets in our solar system are very well tied to their orbit around the sun or orbit around their planet (for moons), I ...
4
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1answer
2k views

Where to find information on the pulsar map written to Voyager's golden record?

Where might I find details about the pulsar map written on the Voyager's golden record? This diagram defines the location of our Sun utilizing 14 pulsars of known directions from our sun. ...
5
votes
1answer
179 views

What is the most convenient rocket engine to use exclusively in space?

I mean what parameters should a rocket engine that is used exclusively in space (last stage of a lunar rocket for instance) have?
6
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2answers
1k views

Why aren't space probes like New Horizons sped up in space?

So the New Horizons project is sending a probe out to image Pluto and Charon. As they're pretty far away, it will take the New Horizons probe nearly 10 years to get there (in 2015, having been ...
9
votes
1answer
372 views

Has a human ever perished in space?

Apollo 13 returned safely. The Challenger was leaving when it exploded. The Columbia was coming back when it burned up, as was that Russian guy who was profiled on National Public Radio (NPR) and that ...
8
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5answers
134 views

Exoplanet detection via space-based parasol

I remember from watching Cosmos years ago, Carl Sagan suggested an interesting hypothetical method for directly seeing exoplanets. He proposed that in the 'future' we could launch a satellite designed ...
3
votes
1answer
125 views

What effects will the heliosheath have on the Voyager spacecraft?

I wanted to know what effects the heliosheath will have on the Voyager 1 & 2 craft. I know they used the slingshot method to travel through our solar system; so, with being way out in the ...
13
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2answers
7k views

Cameras in Voyager probes

I've always wondered about the cameras in the space probes, especially in the Voyagers. 1) What kind of cameras do they have? Digital? (What kind of sensor and megapixel count?) Analog? (Do they ...
16
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1answer
441 views

Are the Voyager probes still sending us a signal ?

This article reported today, a finding from one of the voyager probes. It talks about magnetic structures at the (far) outer edge of our solar system. Does that mean we're still able to pick up a ...
13
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2answers
187 views

What is the most distant object from the Earth that a spacecraft has visited to date?

What is the most distant object from the earth that a spacecraft visited has visited so far? What was the mission and when did it happen?
9
votes
1answer
3k views

The most distant point from the earth that a space shuttle has reached

What is the most distant point from the Earth that a space shuttle has reached? When did this happen?
4
votes
1answer
326 views

What kind of telecommunication systems do astronauts use in space?

What kind of telecommunication systems do the astronauts use in space? I ask about both earth-to-space and space-to-space.
6
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2answers
107 views

After the Space Shuttle is retired, how will the new sections of ISS be launched?

The International Space Station (ISS) had many of its components launched by the Space Shuttle. After the Space Shuttle's retirement, what is the proposed launch vehicle for new ISS sections?
6
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3answers
432 views

How does a spacecraft's orientation get determined

What method are employed to determine a spacecraft orientation with respect to a known orientation or plane? Are gyroscopes reliable enough to make this determination, for example in Voyager ...