Astronomers using data from the Keck I Observatory on top of Mauna Kea mountain in Hawaii have discovered an exoplanet in a triple star system. The planet, only slightly larger than Jupiter, is very close to the central star in the system, completing one orbit in just 3.3 days. The other two stars orbit each […]

When the world’s foremost expert on impact cratering mentions that his preconceived notions about comets have changed at least twice in the past week, it is time to rewrite the book on the subject. Dr. H. Jay Melosh, professor and a member of the Deep Impact science team, spoke before a packed crowd Saturday night, […]

The moons of Saturn are a strange assortment of worlds. When the Cassini spacecraft takes the highest resolution images ever of each new world, it generally captures something that leaves scientists and space buffs scratching their heads. Enter the next head-scratcher: Hyperion. This tiny water ice moon looks like a sponge and may in fact […]

Deep Impact Flyby took a look back at the devastation it wrought on Comet Tempel 1 and snapped a spectacular image of impact ejecta streaming out into space in a column that has grown much larger in dimension than the comet nucleus itself. While images and other data continues to stream to the Earth from […]

In a brilliant explosion, Deep Impact’s impactor spacecraft smashed into Comet Tempel 1 around 10:52 p.m. Pacific Standard Time today. The control room at the Jet Propulsion Laboratory in Pasadena, Californa, USA went crazy with gasps, shouts and applause as the first images showing the impact appeared on their projector screen. The image taken by […]

There is not a lot of material in the coma of Comet Tempel 1, according to scientists after studying recent observations made by the Chandra X-ray Observatory. The space telescope saw a steady stream of X-rays from the interaction of the comet nucleus with the solar wind. However, the X-ray view could change during Tempel […]