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- <text id=94TT1212>
- <title>
- Sep. 12, 1994: Space:The Black Hole Next Door
- </title>
- <history>
- TIME--The Weekly Newsmagazine--1994
- Sep. 12, 1994 Revenge of the Killer Microbes
- </history>
- <article>
- <source>Time Magazine</source>
- <hdr>
- SPACE, Page 61
- The Black Hole Next Door
- </hdr>
- <body>
- <p> A nearby object mirrors events across the cosmos
- </p>
- <p> Astronomers have been pondering the riddle of the quasars for
- more than 30 years, wondering what prodigious energy source
- could possibly make these starlike objects visible from halfway
- across the universe. The leading theory: a quasar is gas falling
- into a gigantic black hole. As the gas is compressed, it heats
- up to millions of degrees, glowing brightly enough to outshine
- an entire galaxy; occasionally, jets of hot gas spray out, like
- juice squirting from a squeezed orange.
- </p>
- <p> Since quasars lie billions of light-years from earth, astrophysicists
- thought they might never prove the theory. But radio astronomers
- report in the current issue of Nature that they have discovered
- something similar to a quasar in the Milky Way galaxy, right
- in our own cosmic backyard. The object is much less powerful
- than a typical quasar, but it appears to work on the same principle.
- And being a mere 40,000 light-years away, it will be easier
- to study.
- </p>
- <p> What the astronomers actually saw was a radio hot spot, caused
- by a jet of subatomic particles spewing from the object at nearly
- the speed of light. (Because of its angle, the jet gives the
- illusion of moving faster than light, a physical impossibility.)
- The jet presumably comes from gas falling from an orbiting companion
- star into a black hole that weighs as much as a handful of stars.
- Typical quasars, in contrast, emanate from something with the
- mass of a million stars or more. Unfortunately, galactic dust
- largely hides the mini-quasar, so there is a limit to how much
- astronomers will be able to learn from it. But since they have
- found one, they might find others. And that could give them
- plenty of clues to help solve cosmic riddles.
- </p>
- </body>
- </article>
- </text>
-
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