How well do you know about our Milkyway Galaxy and Andromeda Galaxy? Or did you know that Milkyway Galaxy will collide with Andromeda Galaxy?Keywords: Albert Einstein, Special Relativity, General Relativity, Black Hole, Time Dilation, Twin Paradox, Wormhole, Newton, Gravity*Sponsor: Free Astronomy & Science: https://www.freeastroscience.com**Patreon: If you ever feel like supporting my project: https://www.patreon.com/ScienceWeSpeakSOCIAL MEDIA: Instagram: https://www.instagram.com/sciencewespeak/Facebook: https://www.facebook.com/ScienceWeSpeakTelegram: https://t.me/sciencewespeak