1st Alien World confirmation 25 Years anniversary

1st Alien World confirmation 25 Years anniversary

January 10, 2017

Artist’s impression of exoplanet orbiting two stars

Astronomers confirmed first alien world 25 years ago today.

Astronomers Alex Wolszczan and Dale Frail made an historic discovery on January 9, 1992, confirming a planetary system around the millisecond pulsar PSR1257 + 12.

Above, artist’s impression of exoplanet orbiting two stars.   Credit ESA/Hubble



They published a paper in the journal Nature announcing two exoplanets circling an incredibly dense pulsar.

Artist's impression of the planets orbiting PSR B1257+12

Artist’s impression of the planets orbiting PSR B1257+12. The one in the foreground is planet “C”. Credit NASA/JPL-Caltech/R. Hurt (SSC)

Astronomers have identified about 3,500 of exoplanets, that orbit stars outside of Earth’s solar system.

Wolszczan, from Pennsylvania State University, wrote in a note about the pulsar planets:

“From the very start, the existence of such a system carried with it a prediction that planets around other stars must be common, and that they may exist in a wide variety of architectures, which would be impossible to anticipate on the basis of our knowledge of the solar system alone.”

 

By | 2017-02-01T19:33:40+00:00 Jan 10, 2017|Categories: Astronomy|Tags: , , |

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