Home » News & Blogs » Ancient Clam Shell Reveals Shorter Day Length
Bookmark and Share
Scientific American

Ancient Clam Shell Reveals Shorter Day Length

17 Mar 2020, 20:24 UTC
Ancient Clam Shell Reveals Shorter Day Length
(200 words excerpt, click title or image to see full post)

The growth layers in a 70-million-year-old clam shell indicate that a year back then had more than 370 days, with each day being only about 23.5 hours.

-- Read more on ScientificAmerican.com

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod