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That is an excellent point! We can, for example, know that Newton got something very close to being exactly right about universal gravitation and the nature of the Moon's orbit because he predicted how long one orbit of the Moon should take based on how far something falls in one second here on...

By the way, I have met with utter failure on my attempt to photograph the Lyrid Meteor Shower. Meteors are difficult to photograph under any circumstances but utterly impossible to image when it's overcast. What's really bad is that I had perfect viewing conditions the morning before which is...

Which is exactly what happens when they fly in a truly straight trajectory. But typically, they flat in a level trajectory which is where gravity comes in. No, it isn't saying that David! This is not complicated! To fly a flat (level) course is to keep a course that is perpendicular to the...

The videos you've posted about supposed "real" images of Venus aren't worth anyone's time, including yours. THEY ARE STUPIDITY!!!! That isn't a mere insult, its the truth! The videos you've posted on this thread shouldn't convince a twelve-year-old, David. That first one you posted was a...

He is winning the point. Don't be afraid of logic. If you don't see the point he's making then answer his question and see where it goes. If you do see his point then respond to it because I do see his point and he's got you on this one. There is no contradiction, you're just wrong. There's no...

Incidentally! Tomorrow night - that's Saturday night the 22nd of April - there will be a meteor shower. Since gravity isn't real and we aren't in orbit around the Sun, I have no idea how I know that but, nevertheless, it will be happening tomorrow night. The meteors WILL NOT fall only in a...

Dave, Maybe we can take this discussion down a different course. Let's see what we can find as common ground. I know you're not much into astronomy and related sciences but since the shape of the planet is, at its core, an astronomical issue, I think it might be beneficial to ask you just what...

There are at least two possible explanations. 1. It is spinning, just not at a rate you can detect in the video. 2. It is not spinning relative to whatever it is that took the video. David, this is stupidity. I'm not even going to dignify it with a direct response. Dave, you make claims and...

Translation: "All counter examples to my claims will be dismissed as fakes." How does one debate against an unfalsifiable position?

Nope! http://gizmodo.com/5909215/this-is-the-definitive-photograph-of-planet-earth http://www.dailymail.co.uk/sciencetech/article-2883739/The-GREY-planet-True-colour-image-reveals-Earth-really-looks-like-space-without-filters-editing.html It took me just about 30 seconds to find those images...

Dave does not say anything like, "Jesus loves you. Oh, and by the way, the Earth is flat because the bible says so." He's merely preparing himself for a possible encounter with the issue. He's not one of those who likes to be caught having to say, "I have no idea what you're talking about." Clete

As I just mentioned to Knight, I would like to retract this whole post. It was an emotional reaction and I shouldn't have said it. I'm sorry Dave.

Yeah, me too. I no longer think he's just lying so I retract that accusation. He is, however, being very aggravating.

You've gone now from debating to lying. I'm not putting up with it. Goodbye Dave. Thanks for wasting months of my time. Go and say these stupid things to unbelievers on the street and make us all look like slobbering morons.

Because the Earth's shadow is only so big. When the Moon is lined up with the Earth directly between the Moon and the Sun then the Sun no longer illuminates the Moon. We call this a Lunar eclipse. It happens on a very regular schedule. We can predict down to the second when eclipses are going to...

I just now took this picture. I shot this in my master bedroom closet with the light off. It's a very dark room. I shined a light across the closet and into the side attic so that the light wouldn't reflect off the walls of the closet and illuminate the back side of the sphere. The sphere is...

Yes, Dave, it is. It takes up less than 1% of the sky. And on the moon, there is no atmosphere to create a daytime sky like the blue one we have that spends light all over the place. It's the very definition of a near point source of light. I'm looking at a sphere right now on my desk. At...

Nope. No atmosphere on the moon and a near point source of light (neglecting Earth shine) creates stark shadows on any sphere. In all the internet, you couldn't find an actual photograph of a sphere being illuminated by a point source of light? You relied on computer animation and pencil...

You're right about that! :up:

I do not buy into space-time. Time is not a thing, it's an idea. It is a convention of language used to convey information about the duration and sequence of events. Likewise, I strongly suspect that space is also not a thing but an idea. Ideas are not warped by an object's mass. HOWEVER...