2021 saw great discoveries and achievements in physics, astronomy, and space exploration. In this video, we will be discussing the 5 most exciting discoveries and achievements of 2021 in physics and astronomy. Besides the discoveries covered in the video, other notable ones include the muon g-2 experiment, Parker's dive into the solar atmosphere, the detection of water beyond our galaxy, Perseverance and Ingenuity's Mars adventures, a step closer to invisibility, the achievement of the lowest temperature in a lab, and the discovery of new particles at CERN. Basics of Astrophysics series: https://bit.ly/3xII54M Astronomy Calendar 2022: https://bit.ly/astro_2022 Links to Research Papers: NS-BH Merger: https://bit.ly/3qBl0j9 5th force: https://bit.ly/3vTVIi7 Voyager 1 Hum: https://bit.ly/3J8Y4QD Wormholes (March): https://bit.ly/3Jc6UwT Wormholes (September): https://bit.ly/3mt5UuK Black Hole: https://bit.ly/3GZSzBG