Questions tagged [venus]

Questions regarding the second planet from the Sun.

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4
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1answer
2k views

How would people measure time on Venus?

On earth we can divide our day into 24 hours, and 365 days in the year. I am trying to imagine how people living on airships above the cloud-tops would think about time on Venus given that a single ...
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2answers
452 views

How would you navigate an airship on Venus?

Since there is no magnetic field compass is out. No GPS satellites either. I guess some old school methods could be used but I see some potential problems. Assume we are over the cloud tops, can we ...
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1answer
563 views

What would a Venus sky look like above the cloud tops night and day?

I know it will likely be a yellow haze at the surface level, but I've seen little info about what a Venus sky looks like above the cloud tops or in the midsts of them. Will the sky be blue like on ...
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1answer
150 views

Can engineered comet impacts kickstart Venus's magnetic field?

Would impacting the planet with comets at the right angle (tangent) give it enough spin to turn its iron core, kickstarting a magnetic field while bringing enough water to it to reduce the amount of ...
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3answers
667 views

Would it be possible to power a Venus lander using a temperature differential?

Venus has an average surface temperature of 735K. Would it be possible to harness this extreme temperature and use it to generate electricity? After all, that's the principle a radioisotope ...
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2answers
582 views

What is this white dot and strange line in SOHO image?

In the SOHO images for today, there was a white dot at the bottom right of the image. There is also a strange white line parallel to the top and bottom of the image that crosses most of the image. ...
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0answers
84 views

Terraforming of Venus [duplicate]

Everyone is constantly focusing on the terraforming of Mars. However, how could one terraform Venus? The most obvious problems are the high pressure CO2 atmosphere, sulphuric rain, lack of water, lack ...
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1answer
160 views

Venera mission image data format

I often work with the programmatic manipulation of images and 3d environments in my work at an engineering firm. Out of pure curiosity I was wondering about the Venera mission data format. I read that ...
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4answers
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Why was Venus rather than Mars targeted for the first interplanetary landings?

This is a question about early planetary missions. It looks like there was only one early (unsuccessful) landing mission to Mars and that subsequently Venus became the target for interplanetary ...
7
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1answer
153 views

Should we expect the surface rocks of Venus to be oxide poor?

My thinking is that in an atmosphere rich in hot sulfuric acid they couldn't stand a chance. Although I am unsure of what exactly would be going on chemically at the interface between the venerean ...
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1answer
281 views

What are the problems stopping us from making a “cloud-city” on Venus? [closed]

Isn't it better to colonize on Venus than Mars? Due to similar gravity and the atmosphere blocking a lot of the radiation?
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1answer
933 views

How long would a blimp last in Venusian atmosphere at an altitude of 65 km?

It would be the same blimp on Earth, except with some modifications like anti-corrosion coating. The blimp will use helium as the gas to keep it aloft. Would it last long enough to be useful?
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1answer
753 views

How to produce oxygen out of Venusian atmosphere's carbon dioxide?

What are the possible methods of in-situ extraction of oxygen from the atmosphere of Venus, which is mostly carbon dioxide?
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2answers
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How does Venus' thick atmosphere survive against the solar wind?

The traditional explanation for rocky inner planets and large gaseous outer planets is that the outer planets are farther from the Sun, and therefore can hold onto large atmospheres that don't get ...
12
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1answer
518 views

Does Venus have doldrums or horse latitudes (latitudes with lower winds)?

Because of all the heat fueling convection cells, Venus has some brisk winds especially in the upper atmosphere (up to 370 km/h). I realize the winds are quite slow at the surface, but are there any ...
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2answers
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Could there be a phosphorous cycle on Venus?

Most of what I read says there is not any Phosphorous on Venus which I take to mean none in the atmosphere or none detected. I mean it get hit by Iron-nickel meteorites and probably has some apatite ...
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1answer
307 views

What is the problem with pressure?

Among other reasons, the high pressure of Venus and the gas giants atmospheres are often stated as one of the major problems for an unmanned lander. They say the pressure will "crush" the probe. Why ...
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2answers
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Are there currently any plans for a Venus lander?

I am interested in what the surface of Venus looks like in true color, but have discovered that true color images of Venusian surface are rare, and am hoping that a lander mission is planned to take ...
23
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3answers
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Maximum survivable atmospheric pressure

Given a similar mix of gases to those in our Earth's atmosphere, what is the upper limit of survivable atmospheric pressure for a human? Could a human survive higher pressures with a gas mix unlike ...
10
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1answer
628 views

Would it be feasible to use wind turbines on Venus?

It has been proposed on Earth to use airborne wind turbines, anchored to the ground and flying at high altitudes where wind is strong and consistent. On Venus, I would immediately say that anchoring ...
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2answers
191 views

Could airships be used to construct large structures in the air?

This is relevant for Venus colonization since that considers floating cities. Since one can't use cranes, I was thinking perhaps helicopters or airships could be used to move construction pieces ...
5
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1answer
293 views

Is utilizing the high temperature for chemical reactions on Venus a feasible way of generating electricity?

I assume utilizing habitats floating high in the Venus atmosphere as described by Geoffrey Landis. So weight, size etc is a constraint, and we will not be operating at the surface with the crushing ...
9
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1answer
301 views

Is the Hybrid sulfur cycle a good way of making hydrogen and oxygen on Venus?

Assuming we collect Sulfuric acid from Venus clouds using some sort of airship, what would be the best way of turning this into hydrogen and oxygen? I came across something called the Hybrid sulfur ...
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1answer
213 views

What are the difference in energy costs for entering Venus vs Mars vs the Earth?

From what I understand you can't use aerobraking on Mars for landing as the atmosphere is too thin. From what I understand Mars is quite problematic because the atmosphere is too thin to benefit from ...
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Are there any benefits on Venus compared to Earth with respect to reusing launch vehicles?

My assumptions around building up infrastructure for dealing with space launches from Venus assumes colonization based on the principles outlined by Geoffrey A. Landis of NASA in paper Colonization of ...
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1answer
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Why did the Venera missions land so close together?

I was reading about the Venera missions to Venus, and saw this map on Wikipedia: Venera 7 is missing from the map for some reason, but it landed at 5° S, 351° E, so it would have been very close to ...
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3answers
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Will or could the Parker Solar Probe do science at Venus?

Solar Probe Plus will flyby Venus 7 times(!) during 6 years in order to enter its "low" Solar orbit. Will it carry any instrument useful for studying Venus, for example seasonal changes? Would its ...
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1answer
626 views

The practicalities of a rock sampling mission to Venus

The planet Venus has hostile conditions: a surface temperature of 462 °C, a corrosive atmosphere and a surface atmospheric pressure 92 times that of the Earth. During the Soviet era, the Russians ...
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0answers
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Terraforming Venus with the Bosch reaction, using hydrogen from Jupiter [closed]

OK, so chemistry and physics are not my strong suit, so this idea is just cobbled together from stuff I've heard can be done. But I'd be curious if it is at all plausible, and what the most likely ...
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1answer
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What cooling improvements did the Venera missions make?

I've been reading about Russia's (former Soviet Union) Venera missions, and one thing about them that has impressed me is the incremental improvements the landers made in their lifespans before ...
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1answer
535 views

How much of Akatsuki's original mission will be possible?

In December of 2010, Akatsuki was meant to enter orbit around Venus, but the insertion failed. They now have a new plan to put Akatsuki into orbit in December 2015, but the orbit will be different. ...
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1answer
423 views

How will Akatsuki get into orbit around Venus?

JAXA's Akatsuki was supposed to enter orbit around Venus in 2010, but the insertion failed. Its orbital maneuvering engine was supposed to burn for 12 minutes to get it into position, but it stopped ...
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2answers
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Can it be said that Venus is covered by an ocean rather than atmosphere?

At Venusian temperatures and pressures, CO2 becomes supercritical. This means it behaves as a dense liquid yet has no clear upper bound and continuously becomes gas with height. Can we thus say that ...
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1answer
917 views

A cloud-top colony on Venus, will it drift to the poles?

Suppose a cloud-top colony on Venus. Provided that it has no thrusting engines, where it will tend to go naturally with winds, to the equator, to the poles or elsewhere?
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What useful materials can be extracted from Venusian atmosphere?

Consider a cloud-top colony on Venus. What materials needed for the upkeep and expanding of the colony can be taken from Venusian atmosphere, excluding any possibility of mining the surface?
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553 views

Does the Venusian atmosphere's “super rotation” actually rotate?

The atmosphere of Venus contains strong winds and is said to have a "super rotation" because the atmosphere (above a certain altitude) moves faster than what the ground does. No one can ...
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3answers
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Is it more challenging to put an airship in the Uranian than in the Venusian atmosphere?

The Soviet Union's (in cooperation with some European governments like France and West Germany) Vega missions put balloons in the atmosphere of Venus back in 1985. It was 30 years ago, the last ...
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1answer
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Why is Mars favored over Venus? [closed]

There's been a lot of talk in the last years about a trip to Mars (with SpaceX having the most serious intentions). I can understand that it has a less harsh environment and it will be easier to land ...
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2answers
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How much sulphuric acid is on Venus?

According to Wikipedia there are just 150 ppm of sulphur dioxide and 20 ppm of water in Venus' atmosphere. At the same time it is known that there is a considerable amount of sulphuric acid in the ...
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3answers
645 views

How could the proposed floating base in the atmosphere of Venus receive supplies?

I'm a big fan of the floating aerostat concept developed by Geoffrey Landis for colonizing Venus. But how would you supply a floating base? It would be an awfully small target to aim a vessel at. The ...
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2answers
4k views

Why would Sun-synchronous orbits be impossible around perfectly spherical bodies?

This is a special case follow-up to Are sun-synchronous orbits possible around any body? Reading Wikipedia on Sun-synchronous orbit a few days ago when trying to refresh my memory on orbital mechanics ...
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5answers
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Stability of Lissajous orbits around Sun-Venus L1

How far is it from the Venus? Does Mercury gives too big perturbations for a stable Lissajous orbit?
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2answers
335 views

Could electricity propel Curiosity on Venus?

To-date the humans have dispatched surface missions to Mars Luna Venus Mars has a thin atmosphere. Luna lacks one. Venus has a soup-thick atmosphere. Landing a static craft on Venus is one thing. ...
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1answer
188 views

How would critical refractivity of radio waves on Venus be overcome?

Rereading my answer here and in particular, rereading the article Optical and Radio Refraction on Venus (Stratton, 1968) it is my understanding that there is significant refraction of radio waves, as ...
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2answers
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Is there any plan for ISRO to reach Venus?

After successfully completing the placement of the Mangalyaan into orbit, is there any plan for ISRO to launch a spacecraft to Venus ?
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Fixing Carbon in Venus's Atmosphere

I often wonder about fixing the carbon the atmosphere of Venus. Whilst there is no water meaning this is unlikely to be possible using biological means, is it possible that some kind of machine could ...
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1answer
450 views

What would the atmospheric conditions of Venus sound like on its surface?

Following on from the question How long will it be light on Venus at night?, which is essentially about the visual properties of the Venusian atmosphere, this question is concerned about the sound-...
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2answers
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Would terraforming Venus destroy its ionosphere?

In "Can Venus be made habitable?" we see that Venus's atmosphere would have to be substantially altered in order to terraform Venus. "Why has Venus's atmosphere not been stripped away by solar wind?" ...
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Why is the rotation rate of Venus so slow?

Venus has an extremely slow rotation rate, to the point that it actually rotates slower than it revolves around the sun. In other words, its day is longer than its year. With the exception of Mercury, ...
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1answer
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How long will it be light on Venus at night?

The atmosphere of Earth bends light such that there is still light after the sun goes down for a period of time. How would such effects appear on Venus, given the thicker atmosphere?