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Teaser image horizontal 1293749586

Even 'Failed Stars' Form Planets

October 25, 2005
An international team of astronomers shows that even brown dwarfs start to form planets [more]
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First Direct Evidence Says: Young, very Low Mass Objects Are Twice as Heavy as Predicted

January 23, 2005
Although mass is the most important property of stars, it has proved very hard to measure for the lowest mass objects in the Universe. Thanks to a powerful new camera a very rare low-mass companion has finally been photographed. The discovery suggests that, due to errors in the models, astronomers have overestimated the number of young "brown dwarfs" and "free floating" extrasolar planets. [more]

Mysterious Stellar Dust in the Early Universe

December 23, 2004
Since last year some astronomers thought they finally knew the origin of the large amount of dust surrounding the earliest quasars: It would have formed during supernova explosions of the first stellar generation after the big bang. This notion was inferred from observations of the allegedly "heavily smoking" supernova remnant Cassiopeia A. However, new observations obtained with the ISO and SPITZER infrared satellite observatories now show that this important result is no longer tenable. [more]

25 Years of Calar Alto Observatory

November 16, 2004
From the Past to the Future [more]
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Mining for Cosmic Treasures with GEMS

January 15, 2004
Largest Hubble color image tells the history of the Universe [more]
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