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The F ring resolves into 5 separate strands.

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The F ring resolves into 5 separate strands.
The F ring resolves into 5 separate strands.

Prometheus Disrupting Saturn's Rings.

Cassini took this amazing photograph of Prometheus, one of Saturn's small shepherd moons as it's tugging material away from the planet's F ring. The F ring resolves into 5 separate strands, and you can see how tiny Prometheus has a stream of material flowing towards it. Prometheus is only 102 km (63 miles) across, and scientists still aren't sure exactly why it creates the different knots and breaks in the F ring.

Mars Was Once Suitable For Life.

A series of research papers about past water on Mars have been published in the Journal Science by various scientists involved with the Mars Exploration Rovers. Although the team went public with their discoveries many months ago, these research papers provide the full evidence from the Opportunity rover, and have been exhaustively peer reviewed. They hypothesize that the Meridiani Planum region was once saturated with liquid water for a long enough time to support life.

Greenland Glacier Speeds Up.

Scientists have used satellite photographs to track the movements of a relatively fast moving glacier in Greenland, and found that it's picking up speed, doubling its velocity in the last few years. While the glacier is speeding up, it's also thinning, losing ice at a rate of 15 metres (16.4 yards) in thickness each year. The amount of ice melting into the ocean is more than double the output that traditional climate models were predicting, and demonstrates that the world's ice caps and glaciers are much more sensitive to rising temperatures than previously believed.

Saturn's Rings in Black and White.

This close-up of the lit side of Saturn's outer B ring and the Cassini Division looks something like a phonograph record. There are subtle, wavelike patterns, hundreds of narrow features resembling a record's 'grooves' and a noticeable abrupt change in overall brightness beyond the dark gap near the right. To the left of the gap is the outer B ring with its sharp edge maintained by a strong gravitational resonance with the Moon Mimas. To the right of the Huygens Gap are the plateau-like bands of the Cassini Division. The narrow ringlet within the gap is called the Huygens ringlet.

The image was taken in visible light with the Cassini spacecraft narrow angle camera on Oct. 29, 2004, at a distance of about 819,000 (509,000 miles) from Saturn. The image scale is 4.5 kilometers (2.8 miles) per pixel.

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