The earth is a spheroid.

*Correction*In the definitions, the term "radius" was spelled "rdaius."The definitions should read:radius - a straight line from the center to the circumference of a circle or sphere.*Rebuttal*Con only accepts the "planet on which we live" portion of the definition for earth, in the definitions, and that's fine.What's not fine, is Con's feeble attempt at refuting my case for a spheroid Earth.I had mentioned that orbital velocity is a speed that is reached by objects that get caught in Earth's orbit given their size and radial distance from earth.Con responds:"I see no reason to believe it..."My response:Your argument from personal incredulity is as fallacious as it is unfounded.Whether or not you can believe something has no bearing on whether or not it's true, and all of the functioning satellites orbiting around the earth are reasons you should see to believe the orbital velocity concept.Con continues:"you've not given a reason, and have good reason to say it is gibberish."My response:The equations for orbital velocity have been used to launch every single one of the 1,738 satellites currently orbiting the earth, listed at all confirmed satellite databases.https://s3.amazonaws.com...You can actually check every single satellite's live orbit around the earth at this awesome, free, sign-up-less, site below.Let it load and search for the weather satellite "Aqua" or search one of the many "Navstar" satellites and you can watch them orbit earth.http://stuffin.space...Readers can check out the actual equations at the physics classroom link I provided first round and see that orbital velocity is necessarily successful on its radius property, which necessarily requires a spheroid/spherical center.I had also provided a database of all satellites currently in Earth's orbit, which readers can cross check with the interactive, live view of those satellites moving in Earth's orbit.Con responds:"Another unevidenced assumption."My response:Which satellites mentioned in the database are errant, Con?Why is it that I can cross-check any of the satellites mentioned in the database and locate their position in Earth's orbit, Con?If there were no spheroid center, the radius of all of these satellites moving relative to Earth wouldn't be calculable.The calculations for orbital velocity work, and I gave over 1,700 examples of it.Con goes off the rails:"GPS was used long before satellites were invented."My response:Yeah, and fire was used long before lighters were invented.That doesn't change the existence of butane, metal or plastic and their ability to form a lighter to create fire.GPSs use the distance between four or more satellites to calculate your device's location on Earth and this calculation ALSO involves the radius of the satellites from a central spheroid mass, the Earth.Con blathers:"obvious discrepancies lie with the claimed existence of satellites, like the temperature of the thermosphere..."My response:What's wrong with the temperature given the materials the satellites are made of?Titanium, aluminum, cadmium, nickel, and the alloys there within perfectly allow for the increasing temperatures, when higher altitudes are reached in the thermosphere.Con brain diarrheas:"99% of the world's international data is transferred via undersea cables..."My response:Therefore no satellites?Come on man.All cell phone companies use satellites directly or indirectly for their broadband service, and the transfer of information after that point speaks not to whether or not there are satellites in Earth's orbit.Con asserts:"The earth hasn't moved an inch since it's conception."My response:I sourced a peer-reviewed Institute of Physics article on how the solar system formed given nuclide and long-lived U–Pb chronometry, meteorite evidence, the current volatile element inventory of the solar system, variable and intense x-rayemission of protostars, and zirchon chronology.http://iopscience.iop.org...Con just didn't bother to read it.Instead, Con asserts that the Earth hasn't moved without any sourcing at all.Con just doesn't do much in the way of refuting, other than saying "No it's not."So, I extend my other arguments.Selenelions can go on record all day long, it doesn't negate orbital velocity, satellites, the earth's point in its formation, and actual lunar eclipses always showing circular shadows.Bam!