Exoplanets are a fascinating study in the field of astronomy. Since the first one was discovered in 1992, scientists and planet hunters have confirmed more than a thousand exoplanets out of more than three thousand candidates. An exoplanet is any planet outside our solar system. The importance of finding them is not only for the knowledge that they are present in our universe, but also for finding possible terrestrial planets. However, you can't take your average telescope and point at the sky and find an exoplanet. Finding these hidden objects requires different techniques and technologies. For example, the best way to find an exoplanet is to use radial velocity, or better known as the Doppler method. The Doppler method uses variations in the radial velocity of the host star of what is thought to be an exoplanet, to locate them. Another successful method is the transit method. When a planet passes in front of the star's disk, the star's brightness decreases. The intensity of the star's darkness during this process determines the size of the planet that passes in front of it. There are many different ways to discover and confirm an exoplanet. This list contains other ways to discover these planets: transit time variation, transit duration variation, gravitational lensing, astrometry, pulsar timing, polarimetry, and so on. In the incredible and unimaginably large universe we live in, we must have the technology to explore the vast unknown of deep space. With the ambition and effort to know the darkness in the sky, we have overcome great obstacles and achieved so much as human beings on one planet. We have been to the Moon, along with several planets in our solar system. The technology... the medium of paper... ng and all the other planets and the sun revolved around it. Look how crazy it is to think that now. This is not madness because it is a fact that the Earth is not the center. Technology and knowledge have led us to cross great gaps that we thought were not possible to attempt. We flew to the Moon in 1969, but now we have the power to fly to Mars. In the near future, Terraforming Mars will not just be a science fiction idea. It could actually be done. It's a long process to do, but it can be done. Imagine the power of technology hundreds of years from now. Imagine the feats we can accomplish with this technology and then Earth's Moon seems possible. That is, of course, if we find one there. None of these ideas could be realized if this moon earth did not exist. I guess you could say we hope this Earth moon exists because one day the human race might depend on it.