By Michael Hartley
New: daily puzzles on Math Is Lit
Try my new mobile-friendly daily puzzle site:
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
Albert Einstein turns 240 Venus years old on the 6th November, 2026. 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 
Marie Curie turns 159 Earth years old on the 7th November, 2026. Marie Curie was a scientist who studied radioactivity. She was the first person to win two Nobel prizes, and is still the only person ever to win two in two different disciplines. Links: Amazon, Wikipedia, Other Space Birthdays For Marie Curie 
Douglas Adams turns 310 Mercury years old on the 8th November, 2026. Douglas Adams wrote the famous Hitch Hiker "trilogy", in which the unfortunate Arthur Dent bounces through space and time like a billiard ball.. Links: Amazon, Wikipedia, Official Website, Other Space Birthdays For Douglas Adams Nicolaus Copernicus turns 2299 Mercury years old on the 8th November, 2026. 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 92 Earth years old on the 9th November, 2026. 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 Carl Sagan turns 382 Mercury years old on the 10th November, 2026. 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 William Herschel turns 288 Earth years old on the 15th November, 2026. 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 Isaac Newton turns 624 Venus years old on the 15th November, 2026. 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 Buzz Aldrin turns 402 Mercury years old on the 16th November, 2026. Buzz Aldrin was the second person to set foot on the moon. He also flew on one of the Gemini missions.. Links: Amazon, Wikipedia, Official Website, Other Space Birthdays For Buzz Aldrin René Descartes turns 700 Venus years old on the 22nd November, 2026. 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