Picture of the Day: A Galaxy Slowly Grows

588728main_pia14772-43_full_full.jpg

This artist's rendering shows how a galaxy may build mass from narrow streams of cold gas. The European Space Agency's Herschel Space Observatory has observed that galaxies may grow more through this sort of slow and steady building, and not by collisions with other galaxies as had been previously thought. The rate of star formation peaked in the early years of the universe, about 10 billion years ago.

Image: NASA.
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.

Never Tell People How Old They Look

Age discrimination affects us all. Who cares about youth? James Hamblin turns to his colleague Jeffrey Goldberg for advice.

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

Never Tell People How Old They Look

Age discrimination affects us all. James Hamblin turns to a colleague for advice.

Video

Would You Live in a Treehouse?

A treehouse can be an ideal office space, vacation rental, and way of reconnecting with your youth.

Video

Pittsburgh: 'Better Than You Thought'

How Steel City became a bikeable, walkable paradise

Video

A Four-Dimensional Tour of Boston

In this groundbreaking video, time moves at multiple speeds within a single frame.

Video

Who Made Pop Music So Repetitive? You Did.

If pop music is too homogenous, that's because listeners want it that way.

More in Technology

Just In