It's Earth Day! As the first Earth Day's organizers wrote, April 22 "is a day for looking beyond tomorrow." Today, and every day, we appreciate our home planet—it's the only one we've got. . . . . . . . . . #multiverse #space #interstellar #milkyway #nasa #galaxy #rockets #spacetime #cosmos #cosmology #spacex #astronomy #astronomer #hubbletelescope #Earth #EarthScience #EarthExperience #MotherEarth #EarthPic #Earthrise #TheBlueMarble #EarthMusic #SchumannsResonance #blueorigin #earthday #motherearth #bigblue #planetearth