Talha Mumtaz ✔️'s Key Ideas from Cosmos
by Carl Sagan

Have you ever looked at the stars in the night and wondered what they actually are? Well, if you have, you're not alone. Stars have always held an importance for our people. The nomadic people used the stars to set times for gatherings, pick fruits and even the migration times of the buffalos. Also, we are not the only ones to determine things based on rotationof celestial bodies. Even the planets in our solar system rotate in a certain pattern. Ptolemy used this to theorize that the Earth was the center and everything revolved around it.

Yes, that is absolutely right. However, the thinking about Earth being the center of attention persisted for centuries until Copernicus posited that the planets revolve around the sun actually. Later, the theory was refined by the likes of Kepler who suggested that the planets orbits in an elliptical motion and not circular.

Well, all of us have been fascinated by the idea of Aliens coming to visit our planet someday. These ideas have only been intensified by the Hollywood's extravagant movies based on the idea. However, you should know that if the aliens want to reach out to us , they might do it via radio waves as the technology is quick and affordable. Also, we really don't know how these aliens would look like and lastly, Carl Sagan also believed that while communicating with Aliens may be theoratically possible, the political system on Earth makes it highly unlikely that we'd get in touch.

In 1997, a space mission "Voyager" launched two space crafts in the space on a mussion to trasnport the history of humanity through the universe. As of now, they have already crossed our solar system and are backed by millions of redundant systems enabling them to travel for a long time.

Do you what's inside Voyager 1 and Voyager 2? Well, they are carrying information about our brains, greetings in multiple languages, popular songs from around the world, and even the sounds of our technologies and natural world. Above all, the information will definitely let the extraterrestrial beings understand our curiosity and interest at the marvels of the cosmos.