If Valentine's Day causes your heart to skip a few beats, here's a machine that can help with that. “The Mechanical Heart” also known as the Michigan Heart had the ability to bypass both the patient’s heart and lungs allowing surgeons a “dry” field on which to work.
How many galaxies are there? Hint: A lot. FIND OUT: https://curiosity.com/video/how-many-galaxies-have-been-found-planets-stars-more-ehoweducation/?utm_source=pinterest&utm_medium=social&utm_campaign=20150107pingalaxynumber