Are we alone in the universe?

• 9.807 m/s is earth’s gravity strength.
• 57 Fahrenheit is earth’s average temperature.
• 4.5 billion years is the age of the earth.

Today, there are 8 planets in the solar system, 171 moons and 5,000 identified planets outside the solar system.

For the 5,000 exoplanets, scientist have enough information to estimate planet size, strength of gravity, atmosphere, temperature and more details.

Still, with that information and new planets being identified almost weekly since 1992, there’s yet to be a single planet which they believe is likely to have life, let alone intelligent life.

There’s a constant question, which is asking if earth is one of many planets with life or if earth is this anomaly of 100 billion planets.

Many have been disappointed in decades of research into this with NASA and other groups. Some conspiracies even centered around it.

That said, I think I can explain the lack of alien discovery in simple terms.

First up, gravity

• Mercury’s gravity strength is 3.7 m/s.
• Mars is 3.7
• Venus is 8.9
• Uranus is 8.9
• Earth is 9.8
• Saturn is 10.4
• Neptune is 11.5
• Jupiter is 24.8

If a person could hypothetically go on some of planets and things like burning to death or breathing weren’t an issue, they’d die purely due to gravity.

Jupiter has gravity 2.5x the strength of earth, which could support human bones, where it’s believed human bone density could support gravity at 90x earth’s, but the organs, muscles and possibly even cells couldn’t handle it, where a person would die quickly due to the pressure in a likely slow and painful passing.

Also, things don’t get as good for planets with lower levels of gravity such as Mars or Venus, where while a person would live, without having some clothing for weights, it’s believed long term muscle damage would happen and likely issues for the organs. Not nearly as bad, but would cause problems.

This makes gravity an issue, where it’s possible it’s difficult for life to be created on certain planets just due to gravity impacting atmosphere, gases and how those things form to the point life would be impossible to start, let alone intelligent life.

Second issue, temperature

• Mercury’s average temperature is 354 degrees.
• Mars is -81 degrees
• Venus is 847 degrees
• Uranus is -353 degrees
• Earth is 57 degrees
• Saturn is -285 degrees
• Neptune is -373 degrees
• Jupiter is -238 degrees

This makes earth clearly very different over any other planet in the solar system, where it’s the only one temperature is relatively stable.

Mars, which is believed to be the only other planet which can support life has the equator during the summer hit a pleasant 70 degrees, but during the night, it’ll go negative 100 degrees.

This isn’t rare for planets, where many will bounce between a freezer to an oven in a period of hours, which makes it likely impossible for any life to actually form.

Third and final issue, time.

• 4.5 billion years is the age of the earth.
• 3.5 billion years is believed to be the age of life on earth.
• 430 million years ago was when life started on land.

Humans only began to appear 2 million years ago, with it believed the ancestors showed up 5-7 million ago.

Which at the 7 million year number, it would only give humanlike species .1% of earth’s total existence.

And this is why if we could see all 100 billion planets in the galaxy, we’d likely only get a handful with some form of life and very few if any with intelligent life.

Reason being most planets will boil or freeze anything which could form into life, break it down with intense gravity levels and even if every condition for life was in play, there’d have to be the hope the planet is old enough, we’d catch it in that .1%, where something intelligent would pop up or 10% where something would rise out of the water.

All said and done, is there life outside earth?

Absolutely

100 billion planets in one galaxy of 2 trillion in this universe, which could be one of infinite.

There’s 100% going to be life and probably some really intelligent life out there.

The problem though is it looks like 99.9999% of planets are freezers, stoves, difficult gravity zones or just places that haven’t found the time for life yet.

Humans aren’t alone, but we’re very very very lonely.