A Black Hole Close-Up, and a Telescope as Big as the World

The Event Horizon Telescope will give astronomers an extreme close-up when our galaxy's black hole lights up. 

The giant black hole in the middle of our galaxy stays pretty quiet most of the time, flaring up only occasionally. But it is due for a burst of activity any day now, as a large cloud of gas and dust continues to spiral toward the heart of the Milky Way.  With this sudden influx of material, the normally tranquil black hole — named Sagittarius A* (pronounced "A star") and as massive as 4 million suns — will roar to life, unleashing a fiery discharge of matter and radiation. ...

The full text of this article is available to Discover Magazine subscribers only.

Subscribe and get 10 issues packed with:
  • The latest news, theories and developments in the world of science
  • Compelling stories and breakthroughs in health, medicine and the mind
  • Environmental issues and their relevance to daily life
  • Cutting-edge technology and its impact on our future
Already a subscriber? Register now!
Registration is FREE and takes only a few seconds to complete. If you are already registered on DiscoverMagazine.com, please log in.

Discover's Newsletter

Sign up to get the latest science news delivered weekly right to your inbox!

Collapse bottom bar

Log in to your account

Email address:
Remember me
Forgot your password?
No problem. Click here to have it emailed to you.

Not registered yet?

Register now for FREE. It takes only a few seconds to complete. Register now »