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. R. R. Tolkien turns 553 Mercury years old on the 13th March, 2025. J. R. R. Tolkien was a linguist, who wrote the Hobbit for his children. It became so popular he wrote a sequel, Lord Of The Rings, and other novels.. Links: Amazon, Wikipedia, Other Space Birthdays For J. R. R. Tolkien 
Albert Einstein turns 146 Earth years old on the 14th March, 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 
Isaac Asimov turns 171 Venus years old on the 15th March, 2025. Isaac Asimov was a science fiction author famous for his Robots and Foundation series of stories. Links: Amazon, Wikipedia, Other Space Birthdays For Isaac Asimov René Descartes turns 1781 Mercury years old on the 15th March, 2025. Descartes' work on mathematics was a great inspiration to Isaac Newton. Descartes made the famous quote "I think, therefore I am" (Cogito Ergo Sum). Links: Amazon, Wikipedia, Other Space Birthdays For René Descartes George Takei turns 365 Mercury years old on the 18th March, 2025. George Takei played helmsman Lieutenant Sulu in the original Star Trek series. Links: Amazon, Wikipedia, Facebook, Other Space Birthdays For George Takei Isaac Newton turns 1587 Mercury years old on the 19th March, 2025. Isaac Newton, amongst many other discoveries, developed a theory of gravity that helped explain how the planets move in their orbits. Links: Wikipedia, Other Space Birthdays For Isaac Newton William Shatner turns 94 Earth years old on the 22nd March, 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 125 Venus years old on the 23rd March, 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 Leonard Nimoy turns 94 Earth years old on the 26th March, 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 
William Shatner turns 50 Mars years old on the 6th April, 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