Quartz-like Crystals Found in Planetary Disks
NASA/JPL-Caltech · Download full size image
NASA's Spitzer Space Telescope has, for the first time, detected tiny quartz-like crystals sprinkled in young planetary systems. The crystals, which are types of silica minerals called cristobalite and tridymite, can be seen close-up in the black-and-white insets (cristobalite is on the left, and tridymite on the right). The main picture is an artist's concept of a young star and its swirling disk of planet-forming materials.
Cristobalite and tridymite are thought to be two of many planet ingredients. On Earth, they are normally found as tiny crystals in volcanic lava flows and meteorites from space. These minerals are both related to quartz. For example, if you were to heat the familiar quartz crystals often sold as mystical tokens, the quartz would transform into cristobalite and tridymite.
Because cristobalite and tridymite require rapid heating and cooling to form, astronomers say they were most likely generated by shock waves traveling through the planetary disks.
The insets are Scanning Electron Microscope pictures courtesy of George Rossman of the California Institute of Technology, Pasadena, Calif.
Posted on: 13 Nov, 2008
- Hubble Space Telescope
- Chandra X-ray Observatory
- Compton Gamma-Ray Observatory
- ROSAT X-ray Observatory
- SOHO Solar Observatory
- WMAP
- 2MASS Sky Survey
- ASTER Earth Imaging Instrument
- MISR Earth Imaging Instrument
- NRAO Gallery
- NAOJ Subaru Telescope
- Galaxy Evolution Explorer (GALEX)
- European Southern Observatory (ESO)
- Wide-Field Imager (WFI)
- SOFI Infrared Multi-mode Instrument
- Canada-France-Hawaii Telescope (CFHT)
- New Technology Telescope (NTT)
- Atacama Pathfinder Experiment (APEX)
- SOHO Daily Images - 1996
- Spitzer Space Telescope (SIRTF)
- Infrared Legacy Gallery
