Picture of the Day: The Spaceship of Constant Twilight

More

7170115985_09a3b3d1b5_o.jpg

For astronauts on board the International Space Station, most of the year they travel a path that crisscrosses over where Earth is in daytime and where it is night, and as a result they see 16 sunrises and sunsets every day. But twice a year, around the winter and summer solstices, the space station's orbital pattern tracks what is known as the terminator -- the line on Earth that separates day from night. During those times, the astronauts experience constant twilight. Astronaut Don Pettit said this means that he'll see day if he looks to one side and night when he looks to the other.

Image: NASA.

Jump to comments
Presented by

Rebecca J. Rosen is a senior editor at The Atlantic, where she oversees the Business Channel. She was previously an associate editor at The Wilson Quarterly.

Get Today's Top Stories in Your Inbox (preview)

What's the Number One Thing We Could Do to Improve City Life?

A group of journalists, professors, and non-profit leaders predict the future of livable, walkable cities


Elsewhere on the web

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register. blog comments powered by Disqus

Video

Adventures in Legal Weed

Colorado is now well into its first year as the first state to legalize recreational marijuana. How's it going? James Hamblin visits Aspen.

Video

What Makes a Story Great?

The storytellers behind House of CardsandThis American Life reflect on the creative process.

Video

Tracing Sriracha's Origin to Thailand

Ever wonder how the wildly popular hot sauce got its name? It all started in Si Racha.

Video

Where Confiscated Wildlife Ends Up

A government facility outside of Denver houses more than a million products of the illegal wildlife trade, from tigers and bears to bald eagles.

Video

Is Wine Healthy?

James Hamblin prepares to impress his date with knowledge about the health benefits of wine.

Video

The World's Largest Balloon Festival

Nine days, more than 700 balloons, and a whole lot of hot air

Writers

Up
Down

More in Technology

Just In