The Sciences

#88: Visualizing the Violent Cosmos

A new map shows the hotspots of energetic activity in our galaxy and beyond.

By Mary Beth GriggsDec 27, 2011 6:00 AM
NASA/DOE/FERMI LAT Collaboration


Sign up for our email newsletter for the latest science news

This is the night sky as seen in gamma rays, radiation emitted by the most energetic objects in the universe. The bright streak across the middle shows where high-speed particles collide with gas and dust scattered between the stars of the Milky Way. Pulsars and supernova remnants—relics of exploded stars—show up as bright dots close to the centerline. Many of the red spots above and below are distant, active galaxies where massive black holes stir up gas and sling it around at close to the speed of light. Researchers at NASA’s Fermi Gamma-ray Space Telescope produced this map [PDF] after two years of observations. Nearly one-third of all the sources of gamma rays seen here remain unidentified, which is what makes the research so exciting to project scientist Julie McEnery. “Who knows what we’re going to find next year?” she says.

1 free article left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

1 free articleSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!


Already a subscriber?

Register or Log In

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Our List

Sign up for our weekly science updates.

To The Magazine

Save up to 70% off the cover price when you subscribe to Discover magazine.

Copyright © 2023 Kalmbach Media Co.