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Sounds from space

Sounds of Enceladus

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This artist's concept shows the detection of an atmosphere on Saturn's icy moon Enceladus. The NASA/ESA/ASI Cassini spacecraft's magnetometer instrument (MAG) is designed to measure the magnitude and direction of the magnetic fields of Saturn and its moons. During Cassini's two close fly-bys of Enceladus (17 February and 9 March) the instrument detected a bending of the magnetic field around Enceladus.

The picture shows the magnetic field observed by Cassini along its trajectory plotted in a vector form. Even though the spacecraft altitude was almost 500 kilometres at closest approach and the fly-by was upstream of the moon (where the interaction is expected to be weaker) Cassini's magnetometer observed a bending of the magnetic field which is consistent with its 'draping' around a conducting object, i.e. a moon with an atmosphere. This indicates that the Saturnian plasma is being diverted away from an extended atmosphere.

Credits: NASA/JPL

Song of the Sun

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Dawn in space

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Cluster probes the mysteries of the black aurora

The dark band in the green aurora pictured here is an example of a black aurora. A black aurora isn't an aurora at all; rather it is a lack of auroral activity. The black aurora is only visible to the naked eye if it is embedded in a region of diffuse (faint) aurora.

Credits: Photograph courtesy of Jan Curtis, Fairbanks, Alaska

Atmospheric squeaking

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Cassini-Huygens passing through Saturn's rings

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Credits: NASA/ESA

Auroral 'Star Wars'

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An artist's impression of the Cluster quartet

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An artist's impression of the Cluster quartet.

Credits: ESA

Marsquake!

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Mars Express integration at Intespace facilities

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Mars Express will leave Earth for Mars on 2 June 2003 when the positions of the two planets make for the shortest possible route, a condition that occurs once every twenty-six months. The intrepid spacecraft will start its six-month journey from the Baikonur launch pad in Kazakhstan onboard a Russian Soyuz/Fregat launcher.

Credits: ESA J-L Atteleyn

Wailing of the Leonids

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This striking image showing some Leonid meteors was taken on 19 November 2001 by Andrew Johnson in Western Australia. (15 minute exposure using a super wide-angle lens)

Credits: Andrew Johnston, Australia

Last update: 1 November 2005

Looking at Mars

At Saturn and Titan