io9 
Enter your username and password.
San Francisco, 2:41 PM
Thu Dec 31
27 posts in the last 24 hours
Tip your editors:
Editor-in-Chief:
Annalee Newitz |
News Editor:
Charlie Jane Anders |
Associate Editor:
Meredith Woerner |
Assistant Editor:
Lauren Davis |
Weekend Editor:
Graeme McMillan |
Contributors:
Joshua Glenn
Stephen Goldmeier |
Ed Grabianowski |
Austin Grossman
Paul Hogan |
Lauren Davis |
Chris Hsiang |
Lynn Peril |
Ann VanderMeer
Alasdair Wilkins |
Graphic Designer:
Stephanie Fox |
Interns:
Tim Barribeau |
Julia Carusillo |
Alex Eichler |
Cyriaque Lamar |
Caitlin Petrakovitz |
Mary Ratliff |
Josh Snyder |
Original material is licensed under a Creative Commons License permitting non-commercial sharing with attribution.
Mars in the Nineteenth Century
Using telescopes, astronomers have been mapping the surface of Mars in surprising detail for over 100 years. This map of the entire Martian globe, showing everything from Mare Australe to Mare Boreum, was made in 1890. Now you can check a satellite photo to see how accurate it really was. More »