By Michael Hartley
If you were born on Mars, how old would you be today? Or how many times has Jupiter gone around the sun since you were born? What's your age in Venusian years? This page can tell you! Enter your and your friends' birthdays using the form below. The information will only be stored on this computer, not on the server, so don't worry! (PS - I also have some printable space birthday worksheets you can download if you want to do these calculations yourself.)
- Your/your friend's name:
- Your/your friend's birthday:
Celebrity Birthdays
J. K. Rowling turns 98 Venus years old on the 14th November, 2025. J. K. Rowling became famous for her Harry Potter series of books, after being rejected by eight different publishers. Links: Amazon, Wikipedia, Official Website, Other Space Birthdays For J. K. Rowling 
William Herschel turns 287 Earth years old on the 15th November, 2025. William Herschel was an astronomer who discovered the planet Uranus, the first new planet discovered since ancient times.. Links: Amazon, Wikipedia, Other Space Birthdays For William Herschel 
William Shatner turns 393 Mercury years old on the 15th November, 2025. William Shatner is most famous for his role as Captain James T. Kirk, from Star Trek. Links: Amazon, Wikipedia, Other Space Birthdays For William Shatner Terry Pratchett turns 322 Mercury years old on the 16th November, 2025. Terry Pratchett is a British fantasy author, known and loved for his incredible Discworld series. Links: Amazon, Wikipedia, Official Website, Other Space Birthdays For Terry Pratchett Albert Einstein turns 609 Mercury years old on the 16th November, 2025. Einstein's theory of relativity helped explain some oddities of the orbit of Mercury, which had been puzzling astronomers since the days of Newton. Links: Amazon, Wikipedia, Other Space Birthdays For Albert Einstein Leonard Nimoy turns 393 Mercury years old on the 19th November, 2025. Leonard Nimoy is most famous for his role as the Vulcan Spock in Star Trek. Links: Amazon, Wikipedia, Star Trek on Amazon, Other Space Birthdays For Leonard Nimoy George Takei turns 144 Venus years old on the 21st November, 2025. George Takei played helmsman Lieutenant Sulu in the original Star Trek series. Links: Amazon, Wikipedia, Facebook, Other Space Birthdays For George Takei Nicolaus Copernicus turns 2295 Mercury years old on the 21st November, 2025. Copernicus is famous for his model of the solar system that put the planets orbiting around the sun. . Links: Wikipedia, Amazon, Other Space Birthdays For Nicolaus Copernicus Carl Sagan turns 148 Venus years old on the 27th November, 2025. Carl Sagan's writings have been incredibly inspirational in mankind's reach towards the planets and stars. Links: Amazon, Wikipedia, Official Site, Other Space Birthdays For Carl Sagan 
Albert Einstein turns 78 Mars years old on the 27th November, 2025. Einstein's theory of relativity helped explain some oddities of the orbit of Mercury, which had been puzzling astronomers since the days of Newton. Links: Amazon, Wikipedia, Other Space Birthdays For Albert Einstein