How long would one survive on different planets without a spacesuit?

 1. Mercury

Just a few seconds, and with a lot of luck maybe a minute. Then you'll die from the extreme temperatures and suffocation. Mercury's "night side" is extremely cold, while its "day side" is extremely hot.

2. Venus

Less than a second. The very high pressure of the carbon dioxide atmosphere and the extremely high temperature will destroy and roast you within fractions of a second.

3. Earth

About 80 years old. :)

4th Moon

Maybe half a minute. You will die of suffocation.

5th of Mars

Approximately one minute due to the 95% proportion of carbon dioxide in the atmosphere.

6. Jupiter

Less than a second. After you enter Jupiter's atmosphere, your carbon body will turn into diamonds.

7. Saturn

Less than a second. Just like with Jupiter.

8. Uranus

Less than a second.

9. Neptune

Less than a second.

What are some unique insights into the human body?

 I found some extraordinary insights there.

Here you can see the brain through the eyes. It clearly shows that blindness isn't necessarily caused by the eyes, because a lot can go wrong on the way to the brain.

This is what lung cancer looks like.

Here you see some human kidneys. I don't know who arranged them like this, though.

A human skull with milk teeth and the permanent teeth waiting to erupt.

A human face and what lies behind it. I suspect it's from the Body Worlds exhibition.

An eye affected by drugs and stress.

A blood vessel on the finger.

The brain with its associated spinal cord. Incidentally, it doesn't extend all the way to the bottom of the spine. Your lower vertebrae no longer have a spinal cord.

This is what a lung looks like. It consists of countless air sacs, and an injury can cause them to simply collapse. That's why lungs are light, even though they are so large.

What are some shocking facts about human psychology?

 I will write about men and women separately...

*Don't take this answer too seriously; many of the points may not apply.*

*WOMEN*

• Only 2% of women consider themselves beautiful.
• Women remember the faces of beautiful women better because they are seen as potential threats.
• If a girl is really into you, she'll secretly look at you when the people around you are laughing.
• Women are more attracted to men who pay attention, someone who remembers details about them without needing to be reminded.
• Women socialize by complementing each other, and that's really not what they want.
• Women have more taste buds than men.
• Women take longer to make decisions than men, but once they make a decision, they are more likely to follow through on it.
• Women are more easily persuaded by a man's sense of humor than by his looks.
• Women are better at lying than men.
• When a woman is attracted to a man, she speaks louder than usual.
• Most women don't like sending text messages in the first place because they feel unwanted, awkward, and annoying.
• The average number of secrets a woman can keep is 47 hours and 15 minutes.
• Girls like to playfully hit guys when they like them.

---

*MEN*

• Men don't like comparisons. They hate it if a woman compares them to another man.
• Guys fear rejection, crave attention, yearn for affection, and dream of perfection.
• Most of a man's love resides in his mother, and he openly expresses his love for her, but he respects his father even more, though he cannot openly share this even with his own father due to shyness. But deep down, he has great affection for his father.
• The average man gets bored after 26 minutes of shopping.
• The average man lies to his colleagues, boss, or partner 6 times a day.
• Men stare at women for almost a year of their lives.
• According to research, men can listen to their male friends for a long time, but can only listen to a woman for 6 minutes.
• Men change their minds two to three times more often than women.
• Men tend to forget, but they never forgive.
• Most men think of women like books. If the cover doesn't grab their attention, they won't bother reading what's inside.
• Men prefer to resolve their problems without discussing them.
• Men like to make eye contact while talking to girls they like.
• Men think about marriage more than women do after they've already gotten engaged.
• According to psychological findings from male studies, most men want to be like their father.
• Men are less attracted to women who cry frequently.

What are some facts about human biology and why are they interesting?

 The human body is an amazing machine, with some oddities."

You can brush your teeth too aggressively. This can wear down the enamel and make your teeth sensitive to hot and cold foods.

Goosebumps evolved to make our ancestors' hair stand on end, making them more threatening to predators.

Wisdom teeth are useless. They are remnants from hundreds of thousands of years ago. As the brains of early humans grew, they reduced the space in the mouth, thus eliminating that third set of molars.

Scientists aren't sure exactly why we yawn, but it may help regulate body temperature.

Your nails don't grow after you die.

If they were placed end to end, all the blood vessels in the human body would circle the Earth four times.

Humans are the only animals with chins.

When you breathe, most of the air enters and exits through one nostril.

Every few hours, the workload shifts to the other nostril.

Blood makes up about 8% of total body weight.

The human nose can detect approximately 1,000 billion odors.

You have two kidneys, but you only need one to live.

Navels grow special hairs to catch lint.

The satisfying sound of your joints cracking comes from gas bubbles popping in your joints.

The skin is the largest organ in the body and can make up 15% of a person's total weight.

Thumbs have their own pulse.

Your tongue is made up of eight intertwined muscles, whose structure resembles that of an elephant's trunk or an octopus's tentacle.

Genetically, all humans are more than 99% identical.

The foot is one of the parts of the body most sensitive to tickling.

The extraocular muscles of the eye are the fastest muscles in the body. They allow both eyes to flip in the same direction in a single movement lasting 50 milliseconds.

A surgical procedure called selective tonsillohippocampectomy removes half of the brain's amygdala, and with it, the patient's sense of fear.

The pineal gland, which secretes the hormone melatonin, gets its name from its shape, which resembles a pine nut.

Hair grows rapidly—about 15 cm per year. The only thing in the body that grows faster is bone marrow.

No one really knows what fingerprints do, but they can help remove water from our hands, prevent blisters, or improve our sense of touch.

The heart beats more than 3 billion times in an average human lifetime.

The blush is caused by an adrenaline rush.

How long can a human being go without eating?

In 1965, a 27-year-old Irishman named Angus Barbieri, who suffered from severe obesity, did it for 382 days.

He survived for over a year on just his body fat, plus water, other fluids, and supplements, going to the bathroom approximately once every 40-50 days.

The sensational fast was prescribed by Dr. William Kinnear Stewart and took place under controlled conditions, with frequent blood tests and hospital monitoring.

Initially, the treatment was supposed to last only 40 days, but Angus unexpectedly found himself calm, stating that his body was getting used to the absence of food and, thanks to his great desire to achieve the goal, he decided to continue with the treatment. (bitter end.)

In the end, starting from an initial weight of 207 kg, he managed to lose 125 kg, thus reaching his ideal weight of 82 kg.

He broke his fast on the morning of July 11, 1966, by eating a boiled egg, a slice of bread with butter, and a cup of coffee, stating in a later interview that he enjoyed the meal very much, but that it immediately made him feel full.

In the following months and years, he continued to be monitored by doctors, and the last check-up, five years later, showed that his weight remained below 90 kg, a value he maintained for the rest of his life.

What are the most impressive facts about the human brain?

 1. Your brain's storage capacity is virtually unlimited.

2. The human brain contains between 80 and 100 billion neurons.

3. More than 100,000 chemical reactions occur in the brain every second.

4. The human brain is the only object of any kind that can contemplate itself.

5. The human brain weighs about 1.4 kg (3 pounds).

6. The human brain can generate about 23 watts of power (enough to power a light bulb).

7. Sixty percent of the human brain is composed of fat. This makes it the fattiest organ in the human body.

8. The brain uses 20% of the body's total oxygen and energy.

9. The brain does not have pain receptors, therefore it cannot feel external pain.

10. The average brain generates up to 50,000 thoughts per day.

11. Your brain has an autopilot setting that allows us to perform common tasks, such as driving, without actively thinking about them.

12. Your brain never sleeps while you sleep; it's busy performing maintenance.

13. When a person dies, they have 7 minutes of brain activity.

What will be challenges to establishment of human colony on Mars

 There are some problem to establishment of human colony on Mars:

1. Journey form earth to moon take approximately 1yr. for example India launch it's satellite for mars mission in 5 nov 2012 and reached mars Orbit in 24 sep 2013 this long time lead to some problem:

A). Long time spend in Zero Gravity leading to weakness of muscles including heart muscles also which was increase the risk of heart attack.

B). It also lead to the weakness of Eyes which was known as stress graft syndrome.

2. In the Mars extreme weather condition in a night time temperature around -153°C and day time around 20 degree Celsius where human do not sustain and technology for it is very costly.

3. Mars atmosphere is thin and It is primarily composed of carbon dioxide (95%), molecular nitrogen (2.85%), and argon (2%).Without a pressure suit, low atmospheric pressure would cause human blood to boil.

4.Lacking a magnetic field, the surface is bombarded with high-energy cosmic rays, requiring radiation shielding for any long-term habitation.

5. Mars Gravity it very less around 38% of earth and exists of iron oxide highly reactive dust—often described as nanophase iron oxides—which poses a significant health hazard if inhaled, ingested, or brought into human habitats.

6.No liquid water exists on the surface now, there are huge, permanent polar ice caps made of water and carbon dioxide, and potentially more water frozen in sub-surface ice

7.Future astronauts will face extreme isolation, confinement, and the "Earth-out-of-view" phenomenon, which will challenge the human psyche.

8. There are some also a morality issue vehicle do not carry all the people of the earth and what happened with the remaining person who has not going to the mars ,it's unfair

why We do not try to maintain earth in human condition rather thanmake it inhabitiual ?

What is an amazing physiological fact about human behaviour?

 1.Every girls in the world do not want an honest answer to the question - "how am i looking? (Brothers Start Lying To your girl)

2. Falling in love at first sight is apparently true according to psychologists. It takes only 2-4 minutes to fall for someone or to make a good impression on Someone. (Just maintain strong eye contact and make her laugh for first 4 minutes)

3. At the age of 16, 80% of people have already met the person they are going to marry. (You Lucky Bastard )

4. A man's smell is the most vital factor for a woman upon first contact. They actually appear more attractive to women when they smell good. (Guys please start taking shower daily)

5. When boys have heartbreak effects then it will hurt them more than girls.(see girls how much pain we hide just to look cool in front of our friends)

6. According to research male don't like one thing repeat again and again. (Girls please stop teasing us by making us say I Love you in Public)

7. Guys hate asking for help most of time, and will avoid talking any help until they feel they can't do it by themselves. (And we are less likely to feel that we can't do it by ourselves)

8. A man like a girl who are more feminine not dominating. (Girls please stop acting like so called male all the time it pisses us off)

9. people's hairstyle can say a lot about their personality. (Guys please choose a hairstyle that suits your personality and stick with it don't just don't become like me who doesn't care about his hairstyle)

10. Sunglasses make people look more attractive because they give the illusion of a chiseled bone structure on top of a soft feature face. (Now I'm regretting why I threw my sunglasses)

11.The feeling of falling in love can alter your personality. (Oh!!! Is that so, I've to be very careful I don't wanna alter my personality)

12. A psychological fact confirms that a presence of a beautiful woman ignites stupid behaviour in men. (Aaa! I don't know what to say, hmm, lets see, what the hell am I doing. Oh!!! It's because of you beautiful)

13. People text faster to someone they like most. (Now I get it Why am I Typing so fast Maybe I already Knew that you were going to read this answer sweetheart)

Thanks for your precious time and don't forget YOU ARE AWESOME.

What are the most mind-blowing facts about the human brain?

 1). The Brain Feels No Pain.

There are no pain receptors in the brain. That's why surgeons can perform brain surgery on a patient while they are still awake.

2). Men's Brains are 10% Bigger than female.

3). When you’re awake, your brain produces enough electricity to power a small light bulb.

4).Surgical removal of almost half our brain is possible with little or no effect on personality or memory.

5).They Saved Einstein's Brain.

After Albert Einstein’s death in 1955, scientists all over the world scrambled for the opportunity to get a piece of his brain. It was a pathologist by the name of Thomas Harvey who got to it first.

6) It is a widely perpetuated myth that most or all humans only use 10 percent (or some other small percentage) of their brains.

The 10 percent myth has inspired many references in the cultural imagination. Films like "Limitless" and "Lucy" are based on the same.

7)."Inception" is Real

It turns out, there is something called Lucid Dreaming, where a person could control the outcome of a dream while in a sleep-like state. It has its roots in ancient Tibetian Buddhism.