Did Tesla really say that the Earth was flat?

Who knows. Whether he said it or not (probably not), the Earth is still a sphere.

You can go on quoting and quoting, but you never quote people who have asserted since the days of Galileo that the earth is not flat. Why? Because no matter what anyone says, you won’t listen to anyone who says the earth isn’t flat.

Why do scientists think there might be life on earth like planets when aliens might survive hot temperatures with no water?

Good point. Great question. We just look for the most “likely” places life might develop. Interestingly, though, there are lifeforms like the ones you describe here on Planet Earth!

You can find these lifeforms in Chile, specifically the Atacama desert. This place is burning hot and has had no significant rainfall in at least 250 years.

According to express.co.uk “While in the central valleys [of the Atacama desert], researchers found 70 species of microorganisms and further inland, the team made another shocking discovery.” What they found, 1 meter deep, was actual living bacteria.

Life does exist in extreme conditions sometimes on Earth. Why not elsewhere, like Mars for instance?

So far, however, we haven’t found any life or former evidence of life, anywhere except here on Earth.

It leads us to believe that if life is out there somewhere, the most likely place to find it would be in conditions that are similar to various climates and places on Earth.

What country would be equal in size to the area of the moon?

The moon has 14.6 million mi². The earth, meanwhile, is 70.8% covered with water. What sticks out of the water covers 57.5 million mi². This means there’s only 3.9 times more land on Earth than on the moon. The moon takes up more than 1/3 of the landmass of Earth above water!

Put that in your pipe and smoke it!

No country in the world is as big as the landmass on the moon.

The closest you might come is the biggest country: Russia, with 6.6 million mi², less than half the area of the moon.

Here’s what the landmass of Earth might look like if we stuck it all together.

Space Debris – A Dodging Problem

This is a no frill video (no audio) produced by scientists, to depict just how much junk “litter” we have floating around up in space, some of it going 35,000 miles per hour.

Just something to think about.

How would we know if there’s intelligent life on the planet?

 This answer is re-quoted with my permission (from my own website). Take it as a rather interesting answer to your interesting question!

Breaking news. Astrophysicists have discovered a new planet within the “Goldilocks” region orbiting a yellow dwarf star and believe it is teaming with life, thus putting to rest the age-old question: “Is there life on other planets?”

The planet appears to be similar to our own in size and has an atmosphere primarily of oxygen and nitrogen. However, don’t plan on visiting the new world anytime soon. Not only is it many light years away, but microbial life floating in the wind would be a death trap without a spacesuit since we have never developed evolutionary immunity against them.

Observations suggest the surface of the planet is mostly submerged under salt-water oceans which themselves are full of aquatic life of all sizes. The areas that rise above the oceans, approximately 25% of the planet surface, are covered with plant life which provide food for many of the animals that live there.

Evidence indicates the dry land areas are inhabited mainly by germs and insects, however quadrupeds and bipeds live among them. The bipeds appear to be polluting their own air and water due to advanced industrial revolution. Great cities have arisen all over the land and the bipeds appear to have launched satellites and probes into space. Unfortunately, they quarrel and kill each other and share no common interests with their environment.

The planet is located inside the neighboring Milky Way Galaxy, which can be seen from our own Andromeda Galaxy with the naked eye in the night sky, and appears brilliant when seen through even modest telescopes.

Tentatively the planet, has been named “Earth” and due to the circumstances may be barren of all life within a few thousand years. It has been classified as dangerous for habitation and the search for intelligent life on other worlds continues.

If you launched a satellite into low earth orbit and let it travel indefinitely without course corrections, how long would it take before it hits another object?

Okay, your question is how long until it hits another object also in low earth orbit, AKA space debris.

In low Earth orbit you are not completely above the atmosphere, though it’s pretty thin up there. Most objects we place in orbit don’t need course corrections and likely succumb to the ever so slight air resistance and over time de-orbit and come down in a ball of fire. The same happens for space debris at that altitude.

There’s a lot of debris at various altitudes, but really most satellites that are released into orbit don’t ever have course corrections. The problem isn’t crashing into something, but gradually slowing down and leaving orbit. It’s true the ISS sometimes has to move out of the way of space debris, but that stuff usually passes many football fields away, and the ISS is a big target. A small satellite is like a bullet. Getting hit by a piece of debris going the other direction is like two bullets hitting each other. Doesn’t happen. In fact, in over 50 years of space exploration, it’s only happened a couple of times.

Given that NASA has landed on the Moon, why did they not put some plants on the lunar surface?

Wow. What would have happened if astronauts had brought plants to the moon? Surely by now the moon would be green! Here I always thought the thing was made of blue cheese.

You must know from the other answers that there’s no air on the moon and plants need air to survive just like you do. Another issue is there’s no water on the moon – no rivers, no lakes, no rain – and we all know if plants don’t get water they die.

However, I can offer you what none other can! Below is a picture of what the moon would look like if it really was green!