Does alien exict.. Please argue with your own ideas.. :)

Do aliens exist? It’s a question that has spawned countless films and TV series, books, podcasts, artwork and conspiracy theories, but the question of whether or not we are truly alone in the universe remains unanswered. In this episode of Science with Sam, we explain the ongoing hunt for extra-terrestrial life and whether or not they might already be here.

Explanation:

In 1961, Frank Drake wrote down what is now called the Drake Equation, which is frequently used to help guide thinking about extraterrestrial life. The equation multiplies a string of probabilities -- such as the fraction of stars with planets, the fractions of planets that are habitable, and the percentage of times intelligent life forms -- to give an estimate of the likelihood that we are not alone in the universe.

When Drake wrote down his equation, very little was known about any of these probabilities. They were all pretty much guesses. However, using the best guesses of the day, he estimated there were 10 planets in the Milky Way galaxy emitting radio waves and thereby detectable in principle by Earth-based radio telescopes.

A lot has changed in the last half-century and we now have a much better understanding of some of these numbers.

So, what do we know for sure?

While the universe is vast, let's restrict our investigation to only our own Milky Way, as other galaxies are very far away and the idea of traveling between them is even more daunting than interstellar travel. So, I'll only talk about our celestial neighbors.

Hope these points in the comments section may helps you to get some ideas

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.