¡Good night! My name is Juan David Tobón and I begun studying physics this year at the "Universidad de Antioquía" here in Colombía. I created an account on this forums so I can practice my english (I hope I haven't write anything wrong) and talk with you all about our universe and learn the most that I can about it. Even tough I have near to zero valuable experience in physics or other sciences I will put all my effort in help make this site a good place to be in. ¡Thanks a lot! P.D: I didn't know what to write, if you didn't realized it please do as if you've never seen this line.