Evidence of Widespread Stealth Volcanism on Io. High spatial and spectral resolution observations of SO emissions on Io reveal evidence for widespread stealth volcanism. Click on thumbnail for more information, references and images.

Multi-phase volcanic resurfacing at Loki Patera on Io. On 8 March 2015 Europa passed in front of Io, gradually blocking out light from the moon, an event observed with the LBTI. Click on thumbnail for more information, references and images.

Three decades of Loki Patera observations. A variety of observations of Loki Patera are presented. Click on thumbnail for more information, references and images.

Long-term, Hi-res Tracking of Eruptions on Io. We tracked 48 hot spots on 100 nights from August 2013 through the end of 2015. Click on thumbnail for more information, references and images.

LBTI Observations of Io. On 24 December 2013 we observed Io with the Large Binocular Telescope Observatory. Click on thumbnail for more information, references and images.

Three Massive Outbursts on Io (August 2014). During a 2-week period in August 2014 we detected three gigantic eruptions on Io with the Keck and Gemini telescopes. Click on thumbnail for more information, references and images.

TVASHTAR AWAKENING (Apr. 2006). Integral-field spectrometer observations detected a powerful volcanic eruption at Tvashtar in April 2006. This eruption was likely the same as detected with the New Horizons spacecraft in Feb. 2007. Click on thumbnail for more information, references and images.

SPATIALLY RESOLVED SO ON IO (NOV. 2002)We scanned the NIRSPEC spectrometer across Io while the satellite was in eclipse (see next bullet). This way we obtained the first spatially resolved `map' of SO on Io. Click on thumbnail for more information, references and images.

AO OBSERVATIONS OF IO IN ECLIPSE (DEC. 2001)When Io is in eclipse (Jupiter's shadow), no sunlight is reflected of the satellite, and hence it cannot be used for wavefront sensing. Yet observations under such circumstances would reveal many volcanic hot spots. Click on thumbnail for more information, references and images.

SPECKLE IMAGES OF IO IN ECLIPSE (1998) Speckle images of Jupiter's satellite Io, while it was in Jupiter's shadow. Click on thumbnail for more information, references and images.

MASSIVE VOLCANIC ERUPTION AT SURT (2001) Keck Adaptive Optics images of Io obtained with the Keck telescope on 19, 20 and 22 February 2001 reveal hot spots and violent volcanic activity. Click on the thumbnail for more information, references and images.

KECK AO IMAGES OF IO AT KLM BANDS (2001) Keck Adaptive Optics images of Io at L (3.8 micron) and M (4.8 micron) bands were taken in December 2001. At these wavelengths the Sun is much less bright, so volcanic hot spots are easily recognized. Click on the thumbnail for more images, references and a movie.

DISCOVERY OF SO ON IO WHILE IN ECLIPSE (1999) We discovered a forbidden SO emission band complex on Io while the satellite was in eclipse. Click on thumbnail for more details and references.