Questions tagged [venus]
Questions regarding the second planet from the Sun.
7
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2answers
130 views
How to come back from a Venus cloud station?
I heard of the idea of having a manned station floating in the atmosphere of Venus, where the pressure is roughly equal to earth sea level.
The idea is exciting, but what I don't understand is how ...
-4
votes
2answers
140 views
Why doesn't NASA plan a manned Venus flyby first? [closed]
After America will have returned to the Moon, why won't NASA make a Venus flyby mission with the Orion/SLS before going on to manned flights to Mars?
They are planning crewed missions to Venus (...
8
votes
1answer
525 views
How did the Venus Express detect lightning?
I found it very interesting (especially the sound recording) of the Venus Express detecting lightning on the planet Venus.
I found it strange watching the ' national geographic ' video about the ...
33
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1answer
5k views
Could the Saturn V actually have launched astronauts around Venus?
One of the more interesting proposed uses of a Saturn V was to launch a manned flyby of Venus. Some of the cargo would have been stored inside the tank of the upper stage, which would be retained ...
5
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1answer
97 views
Does exploration of Venus' atmosphere now require any planetary protection protocols?
This answer quotes Marc Rayman's August 21, 2018 Dawn Journal entry:
Not all solar system bodies need such protection. The Moon, Mercury and Venus, for example, have not been of interest for ...
2
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0answers
63 views
What are the questions and issues related to Kosmos 482's configuration and eventual reentry?
The Space.com article Failed 1970s Venus Probe Could Crash to Earth This Year describes Kosmos 482 (1972-023A, 5919), a 1972 Soviet Venus lander spacecraft that got stuck in LEO instead.
Since the ...
4
votes
2answers
138 views
What would it feel like to walk on Venus's surface?
The conditions on Venus's surface are extremely harsh. I'm trying to conceptualize what it would be like to walk on the surface through supercritical carbon dioxide. Obviously we must neglect the high ...
10
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1answer
268 views
What is the surface temperature distribution of Venus?
I can find lots of resources stating the average surface temperature. However, I have found conflicting reports concerning the distribution of temperatures on the surface. For example, the Venus ...
6
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2answers
1k views
Will the Parker probe use aerobraking at Venus? If not, why not?
The Parker probe needs to lose a great deal of orbital energy and angular momentum in order to approach the Sun so closely. It will be aided in doing that by multiple flybys of Venus. Are these purely ...
2
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0answers
71 views
Venus gravity assist (and aerobraking) - How much delta-V can it add?
The Voyagers made a grand tour using the gravity assist of each planet. But Jupiter, with a 12 year orbital period, doesn't always line up to be useful for spacecrafts destined to further planets. ...
2
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0answers
43 views
Venus Exploration [duplicate]
While reading an article about a possible "Cloud City" on Venus I was taken by the following statement:
Venus’s atmosphere is mainly carbon dioxide and thick clouds of
sulfuric acid cover the ...
3
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0answers
108 views
How was the radius of Venus measured so accurately (± 3 km) in the mid 1960's, before Venera 4 and Mariner 5?
In several answers to the question When did planetary scientists realize Venus' surface pressure was almost 100x that on Earth? How did they find out? the known radius of Venus is mentioned.
It was ...
15
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4answers
890 views
When did planetary scientists realize Venus' surface pressure was almost 100x that on Earth? How did they find out?
The question Surface of Venus - what would it look like to see a spacecraft crushed by the atmospheric pressure? is a good one!
That plus comments below this answer got me thinking first about just ...
4
votes
1answer
295 views
Surface of Venus - what would it look like to see a spacecraft crushed by the atmospheric pressure?
Assuming you send two landers to Venus that have an expected "surface life" of, say, 8 hours.
The second lander arrives four hours after the first, parks up 100 yards away and trains a video camera ...
2
votes
1answer
96 views
Will asteroid 2015 YA have a collision with Venus in october 2018?
When you use the Small-Body Data Browser of JPL Solar System Dynamics and do the search for asteroid 2015 YA, and after that push the [ show orbit diagram ] button, you can see that on october 12, ...
1
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0answers
29 views
High pressure Helium tanks for the Vega balloon experiments
Is there any available (scientific) information on the properties of the high pressure Helium storage tanks, used for the Vega balloon experiments on Venus?
Information on how big pressure gas they ...
1
vote
0answers
106 views
How could asteroid 2013 ND$_1$$_5$ become a moon of Venus with the aid of rocket engines?
Notice:
Although this question is similar to this one, it is different because asteroid 2012 XE$_1$$_3$$_3$ has a transitional path between Venus's Lagrangian points L5 point and L3 point, whereas ...
1
vote
1answer
147 views
Could asteroid 2012 XE$_1$$_3$$_3$ become a moon of Venus with the aid of rocket engines?
2012 XE$_1$$_3$$_3$ is an asteroid, classified as near-Earth object of the Aten group that is a temporary co-orbital of Venus.
It is following a transitional path between Venus's Lagrangian points L$...
13
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4answers
995 views
Venus vs Mars for colonization
Why is Mars getting so much attention vs Venus, which to me seems like a much more attractive option, in regards to habitability.
I've read that the upper atmosphere of Venus has the most Earth-like ...
4
votes
1answer
128 views
Is really almost all the water in the atmosphere of Venus above the clouds?
In this question about the amount of sulfuric acid in the atmosphere of Venus it is calculated that the amount of water in it's atmosphere is $9.6 \times 10^{15} \text{ kg }$ H$_2$O.
In one of the ...
10
votes
2answers
920 views
Why not bring life to the atmosphere of Venus along with the next exploring mission?
Why not bring cyanobacteria and fertilizer to the atmosphere of Venus to improve conditions for life there by producing oxygen ?
Planetary protection could be a reason.
According to Wikipedia:
...
14
votes
4answers
4k views
Could we see the surface of Venus after the explosion of a H-bomb in its atmosphere?
The dense atmosphere of Venus is mainly composed of carbon dioxide and nitrogen, with clouds made of sulfuric acid droplets, which make optical observation of the surface impossible.
As can be seen ...
3
votes
3answers
209 views
Are the mountains of Venus of any help for us to explore the surface?
The circular orbit and small axial tilt results in no seasons, coupled with the well-known strong greenhouse that makes nights just as hot as days.
As pressure gets lower by height, so does ...
2
votes
1answer
78 views
How to calculate mass of fuel for Venus Orbiter
I'm working on a hypothetical constellation of orbiters at Venus for a school project, and I am currently trying to figure out how much fuel I need in the transfer stage. I have already calculated ...
1
vote
0answers
79 views
Speculation. Will this “turning-co2-into-O2” zeppelin work in Venus? [closed]
Background: Me and a friend are trying to "colonize" Mars and Venus. He has Mars, and I have to "colonize" Venus. So, my intention was to do a slow terraform by creating zeppelins that convert CO2 ...
5
votes
1answer
377 views
Could there be caves/underground tunnels in Venus?
If so, would they have the same pressure/temperature than of the surface of Venus? How could we "scan" the surface to gather that kind of information?
For reference, there are several images of lava ...
5
votes
0answers
77 views
Could metal sulfates stay in the sulfuric acid layer of Venus?
For cyanobacteria metal ions like K+, Mg+ and other essential nutrients like phosphorus are vital for growing and to expand.
So they could only thrive in the clouds of Venus if at least metal ions ...
6
votes
0answers
183 views
Why not simulate certain regions of the atmosphere of Venus?
Many people would like to know if any form of life could survive anywhere in the atmosphere of Venus.
Researchers have simulated conditions on Mars and found that after a month some cyanobacteria ...
4
votes
0answers
125 views
What is the typical size of the sulfuric acid droplets in the atmosphere of Venus?
According to Wikipedia:
Venusian clouds are thick and are composed mainly (75-96%) of sulfuric acid droplets. These clouds obscure the surface of Venus from optical imaging, and reflect about 75% ...
24
votes
3answers
4k views
When will we send floating probes to Venus?
Recent plans on human missions to Mars have sparked many discussions, one of which is about if we should colonize Venusian upper atmosphere with Zeppelin like floating ships and cities first.
NASA ...
7
votes
4answers
1k views
Will thinning the atmosphere of Venus make its surface habitable?
I have no idea about this thing, but since Mars is on the table, why not Venus? It has comparatively better gravity and a big enough surface. Also, maybe we can harvest its atmosphere and use it ...
7
votes
2answers
175 views
Are there any updates / follow ups on the HAVOC Venus exploration concept?
The HAVOC concept for exploring Venus with airships has been made public almost three years ago now, but the scientific publication seems to never have been cited, neither am I aware of any official ...
9
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4answers
4k views
Why is the atmospheric pressure on Venus so high?
The pressure on Venus is 1334 PSI or 92 times the pressure at sea level on Earth, which is 14.5 PSI. Now, in our oceans the pressure increases by 14.5 PSI every 33 feet. So, we're told that the ...
5
votes
3answers
707 views
Mechanical computing hardware for a future Venusian rover? How does it work?
I don't know why Gizmodo says NASA's Latest Venus Probe Concept Looks Like a Tim Burton Creation, because it looks far more like a Theo Jansen creation! Compare videos below as well.
I can understand ...
6
votes
1answer
484 views
Why do radar maps of the surface of Venus have missing slices?
The visually opaque clouds of Venus still pass radio and some microwaves, and so powerful radar signals can be used to map the surface. This is probably done using some kind of delay-Doppler technique,...
2
votes
1answer
487 views
Does Venus have a north star or south star?
I am trying to figure out how you would navigate on Venus. On Earth you can use Polaris as a North Star to find north. Would there be a star on the Venus sky which could function as either a north ...
9
votes
1answer
278 views
Archimedean braking for low density Venus lander + subsidiary question
Subsidiary question: Imagine a sphere 10cm in diameter in low venusian orbit.
Slow it down a little in order to deorbit it. What's the density of the sphere, in order to touch the ground at 0 vertical ...
6
votes
2answers
444 views
Is bypassing LEO more efficient when launching to Venus or Mars?
According to the table in the Wikipedia article on Hohmann transfer orbits, when traveling to Venus or Mars, the Δv to enter a Hohmann transfer orbit from Earth's orbit is less than the Δv from LEO:
...
16
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3answers
2k views
Potential high temperature power sources for a Venus lander
What power sources are viable on a 'long term' Venus lander?
An RTG relies on a temperature differential, and is not likely to be doable with a 457C 'cold side'.
Based on this answer there is not ...
3
votes
1answer
290 views
Is there likely to be life in Venus's upper atmosphere?
From what I understand, Venus's upper atmosphere is much more habitable than its surface, with a temperature and pressure that humans could tolerate. However, lack of oxygen and the presence of ...
11
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1answer
340 views
Would it be possible to “ride the wave” on Venus?
Update: Newly published paper in Nature Geoscience Atmospheric mountain wave generation on Venus and its influence on the solid planet’s rotation rate has open-access links in Science News, ...
4
votes
1answer
535 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 ...
4
votes
2answers
303 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 ...
4
votes
1answer
370 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 ...
1
vote
1answer
121 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 ...
2
votes
3answers
381 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 ...
5
votes
2answers
419 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
48 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, sulfuric rain, lack of water, lack of ...
3
votes
1answer
125 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 ...
39
votes
3answers
9k views
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 ...
