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 →

GPS Block III on Hold

Since GPS achieved Fully Operational Capability on July 17, 1995, GPS has become an essential navigational tool for civilians and military alike. Keeping the system up-to-date has proved to be a problem. Originally the system was supposed to be up and running in February of 2016 but has been delayed at least until 2023. The latest... Continue Reading →

Will “Space Force” Militarize Space?

The President of the United States, Donald Trump, wants to create a new branch ​_of the military with equal but separate powers with the air-force. He calls it "Space Force." I don't think this sounds like a good idea. Are we now going to militarize space? The Internet is already producing thousands of images to... Continue Reading →

Why does the moon revolve around the earth?

It just moves forward. The moon isn’t stationary. It has inertia and no atmosphere in space to slow it down. It just goes. As it moves forward, the gravity of Earth tugs on it and it falls, but because it’s moving forward it misses Earth as it falls and goes around, again and again. That’s... 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 →

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