卡西尼最近的作品展示

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In Orbit with Rhea
Released: March 17, 2006

Shadow-striped Saturn and its exquisitely thin rings occupy the near field in this Cassini view, while a crescent Rhea hangs in the distance.

A couple of bright pixels at the center of the image mark the location of tiny Pan (26 kilometers, 16 miles across). As Saturn’s second-largest moon, Rhea is 1,528 kilometers (949 miles) wide.

[ 本帖最后由 夜猫子 于 2006-4-3 12:51 AM 编辑 ]

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Moons Near and Far
Released: March 16, 2006

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Quick Passage
Released: March 15, 2006

   Mimas briefly slipped in front of Tethys while Cassini looked on and captured the event in this series of images.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 11, 2006, at a distance of approximately 3.7 million kilometers (2.3 million miles) from Mimas and 4.1 million kilometers (2.5 million miles) per pixel from Tethys. Resolution in the original image was 22 kilometers (14 miles) per pixel on Mimas (397 kilometers, 247 miles across) and 25 kilometers (16 miles) per pixel on Tethys (1,071 kilometers, 665 miles across). The images have been magnified by a factor of two.

[ 本帖最后由 夜猫子 于 2006-4-3 12:52 AM 编辑 ]

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Taking a Bite Out of Tethys
Released: March 14, 2006

Dione steps in front of Tethys for a few minutes in an occultation, or mutual event. These events occur frequently for Cassini when the spacecraft is orbiting close to the ringplane.

The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on Feb. 10, 2006, at a distance of approximately 3.7 million kilometers (2.3 million miles) from Dione and 4 million kilometers (2.5 million miles) from Tethys. Resolution in the original image was 22 kilometers (14 miles) per pixel on Dione (1,126 kilometers, 700 miles across) and 24 kilometers (15 miles) per pixel on Tethys (1,071 kilometers, 665 miles across). The image has been magnified by a factor of two.

[ 本帖最后由 夜猫子 于 2006-4-3 12:09 AM 编辑 ]

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Rhea and Enceladus
Released: March 13, 2006

   Rhea and Enceladus hover in the distance beyond Saturn’s ringplane. Enceladus, bathed in icy particles from Saturn's E ring, appears noticeably brighter than Rhea.

Rhea is 1,528 kilometers (949 miles) wide; Enceladus is 505 kilometers (314 miles) wide.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 8, 2006, at a distance of approximately 4.3 million kilometers (2.7 million miles) from Enceladus and 4.6 million kilometers (2.9 million miles) from Rhea. The image scale is 26 kilometers (16 miles) per pixel on Enceladus and 28 kilometers (17 miles) per pixel on Rhea.

    Rhea and Enceladus徘徊在土星环平面下的远处. Enceladus,被来自土星E环的冰微粒笼罩着,与Rhea.相比,显得特别亮.

    Rhea直径1,528 公里(949 英哩) ; Enceladus 直径505 公里(314 英哩)。

    下图是卡西尼上的窄视角照相机用可见光在2006年2月8日,在距离Enceladus约4.3 百万公里(2.7 百万英哩) 和距离Rhea 约4.6 百万公里(2.9 百万英哩)处拍摄的。图像分辨率是在Enceladus上26 公里(16 英哩) 每象素和在Rhea上28 公里(17 英哩) 每象素。

[ 本帖最后由 夜空 于 2006-4-30 10:52 AM 编辑 ]

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Accented Vortex

This interesting vortex in Saturn’s atmosphere is surrounded by a halo of bright clouds that extend away toward the east and west. Storms like this one seem to be bright at all wavelengths at which Cassini observes them.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 24, 2006, at a distance of approximately 2.9 million kilometers (1.8 million miles) from Saturn. The image scale is 17 kilometers (11 miles) per pixel.

引人注目的漩涡

这个在土星大气里有趣的漩涡被从东延伸到西明亮的云光晕围拢着。像这种的风暴似乎在Cassini观察它们的所有波长都很明亮。

图像采用Cassini 航天器的狭窄角度照相机在2006 年1月24日距离土星大约2 .9 百万公里 (1.8 百万英哩)以可见光拍摄. 图像标度是17 公里(11 英哩) 每像素。

[ 本帖最后由 夜空 于 2006-4-29 09:28 AM 编辑 ]

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Spray Above Enceladus III
Released: March 9, 2006

   Plumes of icy material extend above the southern polar region of Enceladus as imaged by the Cassini spacecraft in February 2005. The monochrome view is presented along with a color-coded version on the right. The latter reveals a fainter and much more extended plume component.

Images like these are being analyzed by scientists as they seek to explain the processes that could be producing such incredible features. As reported in the journal Science on March 10, 2006, imaging scientists believe that the plumes are geysers erupting from pressurized subsurface reservoirs of liquid water above 273 degrees Kelvin (0 degrees Celsius).

Another plume view, (PIA07801), was taken one month earlier and looks broadside at the moon’s prominent “tiger stripe” fractures. In the January view, the plume appears to have a single component. This (February) view looks along the tiger stripe fractures and reveals both a large and a small component to the plume; the smaller, fainter component is separated from the main plume by about 100 kilometers (60 miles).

(See PIA06247 for a view of the tiger stripe features.)

[ 本帖最后由 夜猫子 于 2006-4-3 12:18 AM 编辑 ]

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A Pearl at Dusk
Released: March 7, 2006

Enceladus hangs like a single bright pearl against the golden-brown canvas of Saturn and its icy rings. Visible on Saturn is the region where daylight gives way to dusk. Above, the rings throw thin shadows onto the planet.

Icy Enceladus is 505 kilometers (314 miles) across.

Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were taken using the Cassini spacecraft wide-angle camera on Jan. 17, 2006 at a distance of approximately 200,000 kilometers (100,000 miles) from Enceladus. The image scale is 10 kilometers (6 miles) per pixel.

黄昏的珍珠
发布: 2006 年3月7 日

Enceladus（土卫二）像一颗孤独而明亮的珍珠在金黄棕色的土星天幕和它那冰光环之前悬挂着。 土星上可见白天和黄昏的交界。 上面, 光环把稀薄的阴影投影到行星上。

冰冷的Enceladus（土卫二）直径505 公里(314 英哩) 。

图像使用了红色, 绿色和蓝色光谱滤光镜分别拍摄然后再合成便创造这张自然色彩的视图。 图像用Cassini太空船上的广角照相机在2006年1月17日 在距离Enceladus（土卫二）大约200,000 公里(100,000 英哩)处拍摄的。 图像分辨率是10 公里(6 英哩) 每象素。

[ 本帖最后由 夜空 于 2006-4-29 09:04 AM 编辑 ]

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The Air Up There
Released: March 6, 2006

This specially processed composite view reveals a tremendous amount of structure in the northern polar atmosphere of Titan. The hazes in Titan’s atmosphere are known to extend hundreds of kilometers above the surface.

Structure visible here could be due to multiple detached hazes, or waves in the atmosphere that propagate through stably stratified layers.

Ten images taken during a brief period were processed to enhance fine detail and then were combined to create this view.

North on Titan (5,150 kilometers, 3,200 miles across) is up.

[ 本帖最后由 夜猫子 于 2006-4-3 12:26 AM 编辑 ]

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Titan Shines Through
Released: March 3, 2006

Titan’s smoggy atmosphere glows brilliantly in scattered sunlight, creating a thin, gleaming crescent beyond Saturn’s rings. At this slight angle above the ringplane, the thin F ring shines brightly. Light from Titan’s eastern and western limbs penetrates the narrow Encke Gap.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 18, 2006, at a distance of approximately 1 million kilometers (600,000 miles) from Saturn. Planet-sized Titan (5,150 kilometers, 3,200 miles across) was 2.2 million kilometers (1.4 million miles) distant from Cassini at that time. The image scale is 13 kilometers (8 miles) per pixel on Titan.

[ 本帖最后由 夜猫子 于 2006-4-3 12:28 AM 编辑 ]

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Credit: NASA/JPL/Space Science Institute
Released: April 4, 2006 (PIA 08149)


This dramatic close-up of Tethys the large crater Penelope lying near center, overprinted by many smaller, younger impact sites.

Three smaller impact features of roughly similar size make a line left of Penelope that runs north-south: (from bottom) Ajax, Polyphemus and Phemius.

Features on Tethys are named for characters and places from “The Iliad” and “The Odyssey.” The largest impact structure on Tethys is named Odysseus. (See PIA07693 for a stunning close-up of Odysseus.)

[ 本帖最后由 夜猫子 于 2006-4-22 11:52 PM 编辑 ]

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Credit: NASA/JPL/Space Science Institute
Released: April 5, 2006 (PIA 08150)


As our robotic emissary to Saturn, Cassini is privileged to behold such fantastic sights as this pairing of two moons beyond the rings. The bright, narrow F ring is the outermost ring structure seen here.

In this scene, bright Enceladus (505 kilometers, 314 miles across) begins to slip in front of more distant Dione (1,126 kilometers, 700 miles across). Enceladus is closer to Saturn than Dione, and orbits the planet at greater velocity. Thus, the smaller moon eventually passed the larger one, as seen from Cassini, and continued on its way.

[ 本帖最后由 夜猫子 于 2006-4-22 09:54 PM 编辑 ]

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Turbulent Down South
Released: April 6, 2006 (PIA 08151)


This view of high southern latitudes on Saturn shows very linear clouds at top, usually indicative of stable prevailing winds, and two turbulent, swirling features farther south. It is possible that these features merged some time after this image was taken.

The image was taken with the Cassini spacecraft narrow-angle camera on March 6, 2006, using a filter sensitive to wavelengths of infrared light centered at 750 nanometers. The image was acquired at a distance of approximately 2.8 million kilometers (1.8 million miles) from Saturn. The image scale is 16 kilometers (10 miles) per pixel.

[ 本帖最后由 夜猫子 于 2006-4-22 11:49 PM 编辑 ]

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Crescent Moon with Rings
Released: April 14, 2006 (PIA 08157)


This poetic scene shows the giant, smog-enshrouded moon Titan behind Saturn’s nearly edge-on rings. Much smaller Epimetheus (116 kilometers, 72 miles across) is just visible to the left of Titan (5,150 kilometers, 3,200 miles across).

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 9, 2006, at a distance of approximately 4.1 million kilometers (2.5 million miles) from Titan. The image scale is 25 kilometers (16 miles) per pixel on Titan. The brightness of Epimetheus was enhanced for visibility.