If two ships are travelling side be side at some major fraction of the speed of light (e.g. 90%) and are, say, 100 yards apart, would they be able to see each other out the portholes?

Great question, and you see, that’s what we mean when we say everything is relative. Your “speed” is always relative to something else. If you don’t compare it to something else, you might as well be standing still.

Relative to you, the other spaceship is standing still. You are both just floating there while Earth quickly moves away from you.

If you were going 90% the speed of light relative to your launching site on Earth, then if you looked back at Earth through a telescope you’d see them all aging very quickly, but to you and your neighboring spaceship, you’d both not experience any personal change. You’d be able to see the other ship and vice versa quite normally.

In fact, if you took a flashlight and pointed it straight ahead in the direction of your travel, even though you were going 90% the speed of light relative to Earth, the beam of light would leave your flashlight at the speed of light relative to you. That’s only possible because time has slowed down for you, making light always look like it’s going light speed. You will not notice any change personally.

On Earth, people looking at you in a telescope would see you were moving and aging very slowly, and although the light of your flashlight would not appear to be going much faster than your spaceship, because your time has slowed down, you see it going out at the speed of light and people on Earth are moving slowly.

Consider this. Here you stand or sit. But the earth is spinning at about 1000 mph at the equator. We are also going around the sun at about 67,000 mph and orbiting the galactic center of the Milky Way galaxy at about 514,000 mph, and our galaxy is approaching the Andromeda Galaxy at about 250,000 mph. So you are not standing or sitting still at all! You are moving very fast right now, but when you shine a flashlight in all directions the beam leaves your flashlight at the speed of light relative to you and your sense of time.

The same happens to you and your friend in the nearby spaceship. You can look out the porthole, see him, and wave and he can see you and wave back as if both your ships were stationary in space and just floating next to each other. It’s all relative.

Lose weight with less gravity!

You weigh less on the Equator than at the South Pole.

I saw a show once about a science researcher that traveled the globe with a small scale and an ordinary garden gnome, you know, like the one on Travelocity TV commercials.

At one point he weighed the gnome at the south pole and it weighed 309.82 grams. At the equator the gnome weighed 307.86 grams. The gnome was 0.6% lighter at the equator, which is further from the center of the earth’s core than the south pole.

The further you go from the core of the earth, the less gravity you experience. So if you want to lose weight without dieting or exercise, go to the equator!

Here’s the scientist himself weighing the gnome.

If the moons of Jupiter and Saturn become habitable when the Sun is a red giant, will we be able to get every human off the Earth through multiple trips (over centuries)? How will the last flight work?

Sadly billions of people would die and not be able to find a way off the planet should the sun become a red giant, even in the future.

Not to worry, though! All life on Earth will cease long before the sun becomes a red giant. As the sun ages it gets hotter and hotter. We estimate that in about a billion and a half years it will be so hot all the oceans, rivers and lakes will have dried up and all vegetation and everything else will cease to be. All that happens billions of years before the sun becomes a red giant.

On the upside, we will finally get rid of all the bad people. By that time, Earth might look something like this:

How did such an immense amount of water actually came to the Earth during its formation period?

There is not an “immense amount of water” on Earth. To we specks walking like ants on the surface of the planet it looks to be a lot of water, but it really isn’t.

To illustrate this I like to show the image below which shows the total water of all the oceans, lakes and rivers on the planet compared to the planet itself.

You can see from the above image, the amount of water relative to the size of the planet is indeed very little, almost insignificant. In fact, relative to the size of the earth, the ocean is very shallow.

This means that only a very small percentage of the collisions early Earth experienced needed to bring water to the planet. The vast majority of these early collisions did not result in the presence of water.

Has there ever been, or will there ever be, a time when the earth was/will be void of all evil, rogue, repressive (use your own adjective) regimes?

Will Earth ever be rid of bad guys? Yes, because in the future there will be no life on Earth at all.

When all else fails, the sun will grow so hot as it ages the oceans and fresh water will dry up. Vegetation and all other lifeforms will cease to exist. Then the sun will grow and become a red giant, completely swallowing Mercury and Venus, and possibly Earth, but if not Earth, Earth would be too close for comfort from the sun’s surface.

At that point I suspect Earth will be completely void of all evil, rogue and repressive regimes and bad guys. In fact, it will be completely void of pretty much everything and look much like what Venus looks like today!

With over 20,000 satellites in the Earth’s orbit, why is there no real satellite imagery of the North and South Pole, or even the earth at all?

Is there any satellite imagery of Earth’s poles or even Earth at all? Of course there is imagery of the poles and the earth as a whole. You must know that. No, the earth is not flat.

But it matters not because no matter what I tell you or show you, you will still go on believing the world is flat and NASA is involved in a giant conspiracy. I don’t even know why you ask these questions. You don’t want to hear why your narrow minded ideas are not accepted by anyone except a small group of kooks.

Your mind will be BLOWN #2!

In the PREVIOUS SCREEN you selected a card from a group of cards. Now your card HAS BEEN REMOVED!

Screenshot_20180130_181655

This is AMAZING. It works because your COMPUTER MONITOR actually DETECTS which card you picked and sends that information back to this website, whereby our website REMOVES the card!

Do you want to try this again? CLICK HERE TO TRY AGAIN!