What would happen to the earth if the sun disappeared?

If you mean the sun just went “poof” and vanished forever, that would mean Everyone Dies™. The whole solar system would just fall apart. The moon would still orbit Earth, but all the planets orbiting the sun, including Earth, would be flung into deep space and become rogue planets. Without light or heat from the sun,... Continue Reading →

How do satellites stay in space?

Let’s revisit Sir Isaac Newton’s cannon. In the above mentioned article we had placed a level on the cannon and shot the cannonball at 1440 feet per second parallel to the ground until it fell and bounced and rolled and came to a stop. We didn’t want to shoot it up in the air in a... Continue Reading →

Half a Percent of the Speed of Light

It would be really fast. Put your science fiction behind you. If we could use nuclear power to achieve a half of a percent of the speed of light it would be fantastic. We could reach the nearest star in 800 years! We could reach the Trappist-1 system in a mere 8000 years! Wake up... Continue Reading →

Why doesn’t anyone else besides me believe in time traveling?

I don’t know the answer to your question. However, consider this. We are not standing still. In time the Earth rotates around it’s axis, the Earth also rotates around the sun, the sun rotates around the galactic center and the galaxy is merging with Andromeda. We are therefore moving at hundreds of thousands of miles... Continue Reading →

Hypothetically, equally intellectual organisms are living on a near planet when and how would humans discover?

Hypothetically, we are living in an infinite universe. How far is a “near planet?” If the planet is within a very close 200–300 light years, then there might be some possibility, within 200–300 years, that we might detect each other. If the life form is on the other side of the Milky-way, or in another... Continue Reading →

What is combined single directional speed of earth rotation, Earth orbit, solar system transit, galactic spin and transit, and universal expansion?

Yes, we’re all over the place. Speed is relative. The sun orbits the galactic center at about 514,000 mph (143 mi/s) within its trajectory around the galactic center, but as we orbit the sun sometimes the Earth speeds up or slows down relative to the galactic center. Round and round we go. It’s kind of... Continue Reading →

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