Enjoy your extra looong Saturday

Lunar Dawn circa 3 billion years ago by Karen Wehrstein

Courtesy of our moon, you get an extra long Saturday this weekend: one second longer. It’s because of the earth-moon interaction, the moon tugs on the earth’s tidal bulge, earth returns the favor by accelerating the moon slightly and pushing it further away. So every now and then we have to add in an extra second to keep up with it all. That day is today: [Read more...]