There is nothing in the universe that is static or eternal, so because of that there can never be perfection. There can a more or less valid way of making or building something (or whatever else you can think of) but you can never have perfection. This is the case with or without a (belief in) god.
There is No Such Thing as Absolute Time
According to Einstein’s special theory of relativity, there is no such thing as absolute time. What this means is that there is no universal ‘clock’ ticking the time - every frame of reference has its own perception of time. Thus, there’s no such thing as an absolute present - or future, or past.
All time on Earth is relatively the same for all reference frames because all humans are not moving very fast - and nowhere near light speed. However, if we were moving at drastically different speeds, we would find that time ticks more slowly for the person moving more quickly - we would age at different rates! Similarly, if one of us was closer than the other to a major gravity well like the Earth, we would age slower than someone who wasn’t.
GPS satellites, of course, are both moving quickly and at significant distances from Earth. So their internal clocks show a different time to the receivers on the ground. A lot of computing power has to go into making your sat-nav work around the theory of special relativity.
Solar Eclipse vs. Lunar Eclipse
Although many people confuse the terms and use them interchangeably, there is, of course, a distinct difference between these two types of eclipse. As soon from Earth, a solar eclipse is when the Moon passes between the Sun and the Earth - effectively blocking out the sun. In this case, one would only seen the moon, with a bright ring around it (shown above on the left.) Seeing the moon is what causes people to confuse it with a lunar eclipse. Solar eclipses can only happen when the lunar calendar is in the total eclipse phase. A solar eclipse does not necessarily mean the entire sun is blocked out - but this is called a total solar eclipse.
Interestingly, if the moon was in a perfectly circular orbit - there would be a total solar eclipse during every new moon, or once a month. Unfortunately, the Moon’s orbit is angled at about 5 degrees relative to the Earth’s orbit, so it doesn’t line up as often! Don’t believe it when people say it is safe to look directly at the eclipse, it is still dangerous!
In contrast with only occurring during a new moon, a lunar eclipse can only occur during a full moon. During a lunar eclipse, the Earth is aligned in between the Moon and the Sun - exactly or as closely as possible. In this way, the Earth blocks the Sun’s rays from striking the Moon directly.
Additionally, solar eclipses can only be seen from small areas of the Earth - while a lunar eclipse can be seen anywhere on whatever is the night side of the Earth at the moment. Lunar eclipses also last much longer, a few hours compares to a mere few minutes!
