Gravity measurements confirm subsurface ocean on Enceladus

In 2005, NASA's Cassini spacecraft sent pictures back to Earth depicting an icy Saturnian moon spewing water vapor and ice from fractures, known as "tiger stripes," in its frozen surface. It was big news that tiny Enceladus—a ...

Saturn is like an antiques shop, Cassini suggests

(Phys.org) —A new analysis of data from NASA's Cassini spacecraft suggests that Saturn's moons and rings are gently worn vintage goods from around the time of our solar system's birth.

NASA Refines Asteroid Apophis' Path Toward Earth

(PhysOrg.com) -- Using updated information, NASA scientists have recalculated the path of a large asteroid. The refined path indicates a significantly reduced likelihood of a hazardous encounter with Earth in 2036.

Islands of Life Across Space and Time

A new study by the University of Puerto Rico at Arecibo shows the first quantitative evaluation of planetary habitability. The study identifies some potential habitats in the solar system and also shows how the habitability ...

Comet ISON and Mars imaged together during close approach

Comet ISON made its closest approach to Mars yesterday (October 1, 2013) at a distance of 10.5 million km (6.5 million miles). While we await to find out if attempts to image the comet by spacecraft on the surface (update: ...

Cassini observes meteors colliding with Saturn's rings

(Phys.org) —NASA's Cassini spacecraft has provided the first direct evidence of small meteoroids breaking into streams of rubble and crashing into Saturn's rings. These observations make Saturn's rings the only location ...

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