Question about the Universe?

The Universe is much, much bigger than the Earth. Consider the following:

If the Earth were the size of a small marble (one centimeter in diameter), the Sun would be a little over one meter wide.

If the Sun were the size of a small marble, the distance from the Sun to the Earth would be over two meters, the distance from the Sun to Pluto would be about 85 meters, and the distance from the Sun to the nearest star (Proxima Centauri) would be about 350 MILES. The Earth would be the size of a tiny dust speck.

If the distance from the Sun to Proxima Centauri were one centimeter (the width of the marbles mentioned above), the Milky Way Galaxy would be over 200 meters wide.

If the Milky Way were the size of a small marble, the Universe would be about six miles wide. The Earth would be one twentieth the size of an electron.

To put it another way, the Universe is about 80 000 000 000 000 000 000 times wider than the Earth.

Here's a video describing the impressive size of the Universe as compared to us:

http://www.youtube.com/watch?v=EjVoUZL0KAI

Because of the wavelength of light, there is actually a theoretical limit to how much microscopes can see. If an object is small enough, even smaller than the wavelength of light, it cannot be detected through an optical microscope. Considering the scale of the universe in comparison to the size of Earth, I'm not even sure that we'd be able to detect our own galaxy!

The Earth is unfathomably tiny compared to the size of the universe.

The universe is at current estimates atleast twenty billion light years in circumference. Even the entire Milky Way, which is "only" 100,000 light years across, would be too small to see if you were looking at the entire universe.

If the universe were reduced small enough to fit under a microscope, our galaxy would be too small to see. The solar system and certainly our Earth would be too insignificantly small to detect.

i really can't answer that question for you because who's not to say this entire universe isn't in a big bubble and we are just one of many floating around. but my answer to it would be no, they wouldn't be able to see us. you figure if we put the earth's entire existence into 24hours, humans would only take up about 4 minutes.

No, I wouldn't think that the Earth would be visible. :)