Enjoying EarthSky? Subscribe.

138,660 subscribers and counting ...

Human World

Breaking through the crystal spheres
Blogs | This Date in Science | Feb 19, 2015

This date in science: Happy birthday, Nicolaus Copernicus

Copernicus broke open the medieval idea of an enclosed, Earth-centered universe. He set the stage for all of modern astronomy.

Blogs | Feb 18, 2015

Happy Chinese New Year 2015!

This year’s Chinese New Year – February 18-19 – rings in the Year of the Sheep (Goat, Ram). Gong Xi Fa Ca, y’all.

Adrienne Haschke.  Used with permission.
Blogs | Feb 14, 2015

For you, Valentine: Top 10 reasons we fall in love

On this Valentine’s Day 2015, what the world of science suggests about the mystery we call love.

Science Wire | Feb 14, 2015

Video: The science of kissing

Why do we kiss? Well, duh, because it feels good. But why does it feel good?

Photo credit: U.S. Air Force/Lawrence Crespo
Blogs | This Date in Science | Feb 13, 2015

This date in science: Chuck Yeager’s birthday

On February 13, 1923, Chuck Yeager, the first pilot to break the sound barrier, was born in Myra, West Virginia.

Launch of SDO in 2010 via NASA/A. Koslosky
Blogs | This Date in Science | Videos | Feb 11, 2015

This date in science: When a spacecraft destroyed a sundog

Coolest space launch ever! Watch what happened when a spacecraft launch destroyed a sundog, in the process bringing to light a new form of ice halo.

Lunar eclipse illustration courtesy of Luc Viatour
FAQs | Feb 09, 2015

What is a Blood Moon?

A lunar tetrad – four total lunar eclipses in a row – began on April 15, 2014. The last total lunar eclipse happened on October 8, 2014, and the next will take place on April 4, 2015.

Great Meteor Procession of 1913 via U. of Toronto
Blogs | This Date in Science | Feb 09, 2015

This date in science: Great Meteor Procession

During the Great Meteor Procession of February 9, 1913, bright meteors were seen to cross the sky on stately, nearly identical paths.

Screen Shot 2015-01-30 at 9.21.13 AM
Science Wire | Feb 03, 2015

Video: What would happen if humans suddenly disappeared?

What would happen to our planet if all us humans – for some reason – suddenly vanished? Here’s AsapSCIENCE’s take on it.

Image via Ingy the Wingy on Flickr
Blogs | This Date in Science | Jan 30, 2015

This date in science: First modern suspension bridge completed

It crossed a dangerous strait between Wales in western Great Britain – and an island that had become a place to catch the ferry to Ireland.