Wandering Mystery Planets [7-2-2001]
Scientists using the Hubble Space Telescope have spotted mysterious planet-sized objects apparently running loose in a distant cluster of stars.  

Cold Clouds and Water in Space [6-4-2001]
Astronomers have for the first time determined how much of the water in cold regions of space is in gaseous form and how much is frozen. This is especially interesting because these regions are the future birthplaces of low-mass stars like the Sun, and solar systems like our own.  

Galactic Habitable Zones [5-18-2001]
Our Milky Way Galaxy is unusual in that it is one of the most massive galaxies in the nearby universe. Our Solar System also seems to have qualities that make it rather unique. These qualities make the Sun one of the few stars in the Galaxy capable of supporting complex life.  

An Astronomy First: Telescopes Double-team Hawaiian Night Sky [3-19-2001]
Proving that two telescopes are better than one, NASA astronomers have gathered the first starlight obtained by linking two Hawaiian 10-meter telescopes.  

A Shortage of Planets [3-5-2001]
When they turned the Hubble Space Telescope on a distant globular cluster of stars, astronomers expected to find fifteen or twenty planets. They found zero.