seen at Quora - Why don't we go to Venus?

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https://www.quora.com/search?q=is%20Venus%20habitable%20in%20upper%20atmosphere%3F

Is Venus a better place to colonize than Mars?
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Planetary Wanderer
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Lives in BelgiumUpdated 8y
Venus, Let’s take a look:

The second planet in our solar system, it has no moons and it is the 
brightest object we can see from earth apart from the Sun and the Moon. 
It is pretty close to the sun compared to earth and it lies outside of 
the habitable zone.

The surface of Venus is hot, really hot 467 °C (863 °F) and the 
atmospheric pressure is immense down there (90 times stronger than on 
Earth). This means that if you don’t melt from the immense heat you 
would get crushed by the atmosphere. It is so hard to survive on the 
surface of Venus that the longest a probe has functioned on the surface 
is 2 hours. It probably seems quite obvious now why colonising the 
surface of Venus isn’t a good idea.

However, a good idea may be to colonise the top atmosphere of Venus.

Up there living conditions are way nicer and an outpost or floating 
colony doesn’t seem too far fetched because NASA already looked into it 
and published a paper about in (Link in sources). The main advantage the 
upper part of Venus presents is that the magnetic field shields you from 
radiation and, because it’s atmosphere is so dense, ‘Earth air’ stays 
afloat. That means that if you build a spaceship and fill it with air 
from Earth’s atmosphere it would float there (Given that the ship isn’t 
too heavy). This means that living there might be quite enyojable, given 
the technology.

Sources:
Image 1: 2 Venus HD Wallpapers | Backgrounds - Wallpaper Abyss
Image 2: NASA Wants to Send People to Venus and Fly a Zeppelin There
NASA paper: 
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110016033.pdf

or items:

If you could travel to any planet to study it without a risk of dying, 
what planet would you go to?
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Manan Suthar
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MS9y
Surprisingly, but Venus !!

Here’s why

It has similar gravity to earth
In upper atmosphere you have habitable temperatures and pressure.
Only need to carry oxygen tank, no need for any other suit.
If you are able to build a structure which floats there, than even 
plants can grow there

Why not Mars

Its surface air pressure is much lesser than earth, need a suit constantly
Need to carry oxygen tank
Gravity is much less, longer stays can make your bones weak
Temperatures are also extreme, your suit needs temperature controller, 
and any damage to it means death
For more, see this video

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Does Venus fall in the habitable zone? If Venus' greenhouse effect could 
be reversed by some means, can it become habitable based on its current 
distance from the Sun?
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Harry Keller
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President & Chief Science Officer (1999–present)
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6y
Venus is just outside (too close to the Sun) of the habitable zone, 
which is an approximation anyway. Two means for “fixing” Venus have been 
proposed. You can build an enormous sunshade in space at the Venus-Sun 
L1 position, or you can put massive amounts of dust in its upper 
atmosphere. These changes will not make it habitable in the usual sense, 
but they will make it more explorable. Temperatures at the surface will 
decline far below the current temperatures that can melt lead so that 
electronics are not fried there. The sulfuric acid that currently falls 
from the skies only to vaporize on the hot-griddle of a surface will 
remain there so that the sulfuric-acid clouds will vanish (and become 
sulfuric-acid lakes). Unfortunately, removing the H2SO4 from the 
atmosphere will not make a large d
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6y
Why don't we go to Venus? Isn't it more livable as gravity is similar 
and we can make floating living spaces in its thick air, compared to 
Mars where gravity is too weak? Venus’s upper atmosphere does have some 
selling points compared to Mars. There are altitudes where the 
temperature and pressure are nice. Breathable terrestrial air is a 
lifting gas in Venus’s atmosphere, hence the design of the Soviet aerial 
cities below. Those semi-habitable altitudes also have enough atmosphere 
overhead to be better shielded from radiation than Mars. And the gravity 
is close enough to Earth’s that it’s likely to be healthy, while we’re 
not certain about Mars’ 0.38G. However, Mars has some selling points, 
too. For one thing, it’s quite easy to operate on Mars’ surface and thus 
have access to the abundant
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