Source: ESO Science Release eso1216
The dust ring around Formalhaut.
Image credits: Millimeter/submillimeter: ALMA (ESO/NAOJ/NRAO).
Visible light image: the NASA/ESA Hubble Space Telescope.
A new observatory still under construction has given astronomers a major breakthrough in understanding a nearby planetary system and provided valuable clues about how such systems form and evolve. Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered that planets orbiting the star Fomalhaut must be much smaller than originally thought. This is the first published science result from ALMA in its first period of open observations for astronomers worldwide.(read more)