Leap Years: Wibbly-Wobbly Timey-Wimey?

This past Saturday we celebrated not only the Mardi Gras Parade, but also a rare day that shows up once every four years. That’s right, if you turned 84 on the 29th of February, congratulations you’re quote-unquote “finally legal”. Why did last month have an extra day? What are years, even? A familiar voice to 2SER, Astrophysics Professor Jonti Horner, at the University of South Queensland, joined us earlier to discuss.