Happy B-Day Neil deGrasse Tyson!

[Rahul]

Yup. By 11:39am ET today I will have travelled 51,697,312,977.89 kilometers around the Sun (32,123,221,000.54 miles). When divided by the circumference of Earth's orbit (2 * Pi * 1 A.U.) you get exactly 55.

Thanks for all the birthday wishes already sent, and for those, perhaps, to follow.

-NDTyson

p.s. 1 A.U. = 1 Astronomical Unit. And you know what Pi is.