Tag: "astronomy"

Why is the day exactly 24 hours long?

This has got to to be the best question so far, continuing in the questions for "evolutionists" series. It disappoints me such people don't even understand the shape and structure of the very local universe.

Darwinists, if Intelligent Design isn't true, then why is a day exactly 24 hours long?

If by Darwinist you mean biologists, then you're asking the wrong group of people. Try asking some astronomers.

A (solar) day is 24 hours long because we decided to break a day up into 24 segments for the purposes of time keeping. We could have just as easily broken it into 10 hours, or 100 hours. Or even 54 hours!

Nowadays however we know that a day isn't 24 hours long. A single day can vary by around 20 seconds depending on the location of the Earth along its orbit. When closer to the Sun near perihelion solar days become longer as the Earth is moving faster in its orbit and has to rotate further to bring the Sun back to the same position on the sky and vice versa. Over the course of a year it will average out to 24 hours, although due to the Moon the Earth's rotation is decelerating.

There's also the sidereal day to take into account which is the time it takes the Earth to rotate relative to the stars. This is truest gauge of how long the Earth takes to rotate. And it is 23 hours 56 minutes and 4 seconds.

Now if the sidereal and the solar day were the same, then maybe you could invoke an intelligent designer to explain why the Earth is a relatively nice place to live, as it would look a little different to how it is now, it would have either fallen into the Sun or remain in orbit with one side boiling and the other freezing while remaining tidally locked to the Sun.

Also, the sun reaches its highest point at noon every day. Why do Darwinists claim this all happened by 'accident' and deny this evidence of intelligent Creator?

The Earth rotates and is angled away from the Sun so it has be at its highest point at some time; we decided to call this the solar noon, which when the Sun crosses the meridian (an imaginary circle crossing between the poles angled at 90° to the local horizon). If by noon you mean 12:00 then this is false. In most countries solar noon will be sometime between 11:00 and 14:00 but due to how large time zones and the fact we like taking hours off and putting them on the solar noon and 12:00 are very rarely equal unless you're stood just in the right spot.

Biologists don't claim this happened by accident. Neither do astronomers. The solar system is a product of the laws of nature. It wasn't put into place as-is by some supernatural intergalactic dictator; it developed from a cloud of hydrogen and dust over millions of years. It seems to be you like using arbitrary names or systems that we came up with to describe the universe as evidence of a designer. The only designer it is evidence for is ourselves.

Questions for "Evolutionists" part 2

I had a comment posted on my original Questions for "Evolutionists" post by someone called Eli, they make some highly effective arguments.

Something that evolutionist can not answer is why are there planets that spin in the opposite direction? Remember now..Conservation of Angular Momentum? Now your answer has to be a fact not a guess.

Ignoring the minor detail that "evolutionists" study biology, not stellar and planetary formation. Young solar systems are chaotic places. There are more forces at work that you haven't taken into account, solar system bodies interact with each other, sometimes extremely violently. A small moon having a retrograde orbit isn't hard to explain, many moons especially irregular ones are captured after their formation, and as such can be orbiting in any direction. Planets revolving different to other planets also isn't hard to explain with large impacts that were common in the early Solar System.

Also I find it interesting they believe in the atom, yet they can't see the atom, but they see its effects. God is the same way.

Except of course we can't put god in a clock so he can tell us the time, caesium atoms work quite well.

Many many evolutionists keep saying "The fossil record proves evolution." Yet those same "scientists" will later say.."Throw out the fossil record it doesn't prove a thing." Which one is it?

Its the one that you didn't just make up.

Sounds like a bunch of confusion to me.

Argument from ignorance, just because you don't understand it doesn't mean it isn't true.

Saturn and Mars in Astronomy magazine

For the people hitting my blog in search of a higher resolution image of Saturn and Mars (and Gemini) that featured in June's Sky this Month section of Astronomy magazine here it is:

Saturn and Mars

Although the caption Astronomy magazine wrote was inaccurate, the image was taken in 2006 and not 2004.

Crysis - ruined by bad science

So I've been playing through Crysis which is a fantastic game. But yesterday I noticed something, something BAD.

WHAT THE HELL IS THAT? The Moon!!!!! Ahhh Jesus.

For us to see the Earth facing side of the Moon completely illuminated, it must be opposite the Sun in the sky. In daytime like this picture shows it is impossible to have the Moon fully illuminated.

In reality the Full Moon will be rising just as the Sun is setting and vice versa - opposite positions in the sky.

So here's the Moon a little later on, and if we look at the compass in the bottom-left of the display we see the Moon hasn't moved a sodding inch in the sky. Despite the fact the Sun has now clearly moved below the horizon.

Next thing I look for is an accurate sky, I was expecting the stars to be thrown randomly into the sky if they couldn't be bothered simulating the Moon properly, I must say I was pleasantly surprised. Here's Cassiopeia, Perseus a quick look around the sky and everything else seems to be in order.

Well until I realised that Polaris is directly overhead. *bangs head on desk*

Now I'm led to believe by this game that I'm on an island in the South China Sea. I would expect Polaris to hang around near the horizon. Polaris being directly overhead means this island, this lush tropical island is set at the North Pole. Then of course if you're at the North Pole why is the sun even setting in the summer? It should remain above the horizon the entire day doing a lap around the sky, and vice versa in the winter.

I was looking forward to seeing some of the southern skies I never get to see in real life, now the stars I see is what I'm stuck with, being at the North Pole means they'll never rise, nor set, that and this big ball called the Moon which hovers over the same spot of the Earth will seemingly always annoy me.

How are they going to explain this? The aliens have teleported this island to the North Pole, yet somehow my funky GPS map thing shows me as being where I'm supposed to be, that the aliens have altered the climate of this island and that they've attached the Moon to the top of a really tall tower on the Earth and put a light bulb inside of it so it!

Yeah right!!!

I have a suggestion for Crytek or EA, I recommend you employ me as your astronomy and/or science advisor on your future projects. Technically speaking it wouldn't take a lot of work to correct this.

You'd need to attach the sky and the Moon to the same thing which makes the Sun move, and move the Moon opposite the Sun, or change its phase to a more accurate one. I would settle for that.

However this wouldn't be accurate for very long (using the in-game binoculars you could spot that the Moon isn't moving properly against the background stars in an hour or two game time). Unless of course you model the Moon's orbit around the Earth properly, which wouldn't take much, and if you're going to do that you might as well model the Earth's motion around the Sun too, that will allow the background stars to move against the Sun as they should do too over the course of a year.

Flight Simulator has been doing this stuff correctly for as long as I can remember. I expect Crysis, one of the best games ever to do the same, this totally ruined the game for me! :-(

In addition to my review on Gamercast I have to add: If you're buying Crysis to use as a sky simulator or an astronomy program I have to strongly recommend against this, there are other freeware applications out there which do a far better job.