... A Close Up of Aurora on Jupiter . ... 19.12.2000 . ... Credit Copyright: John T. Clarke ( U. Michigan ), ESA , NASA Explanation: Jupiter has aurorae . ... As these particles strike the atmosphere, electrons are temporarily knocked away from existing gas molecules . ... Unlike Earth's aurorae , Jupiter's aurorae include several bright streaks and dots . These marks are caused by magnetic flux tubes connecting Jupiter to its largest moons . ... Publications with keywords: aurora - Jupiter . ...

... 2000 December 19 . A Close-Up of Aurora on Jupiter . ... Explanation: Jupiter has aurorae . ... Electric force attracts these electrons back. ... Unlike Earth's aurorae , Jupiter's aurorae include several bright streaks and dots . These marks are caused by magnetic flux tubes connecting Jupiter to its largest moons . Specifically, Io caused the bright streak on the far left, Ganymede caused the bright dot below center, and Europa caused the dot to its right. ... About APOD | ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... This shows the Sun, Moon and Earth (not to scale) together with the . ... They have tested the technique on the Earthshine, the light reflected from the Earth by the Moon, and showed that it can reveal the presence of life in our planet. ... This technique uses the fact that the light reflected from the planet is polarised, whereas that emitted by the star is not. ... Polarised light can tell us about the reflecting surface...

... Science . ... Science Users Information > Science Publications > Science Announcements > Final Data Release of zCOSMOS-bright Redshift Survey . ... Observing Facilities . ... Observing with ESO Telescopes . ... ESO HST Image Galleries . ... This final release of zCOSMOS-bright includes 20689 1-d spectra. The survey was split into two parts: the first, zCOSMOS-bright, which is the subject of this release, aimed to produce a redshift survey of about 20000 I -band selected galaxies at redshift z<1.2. ...

... Jupiter's big moon Ganymede is not only the size of a planet -- it sounds like one too, as heard in audio recordings made from data returned by NASA's Galileo spacecraft released today. ... Characterized by a soaring whistle and hissing static, Ganymede's song reveals that the Solar System's largest moon is also the only one known to possess a planet-like, self-generated magnetic cocoon called a magnetosphere , which shields the moon from the magnetic influence of its giant parent body, Jupiter. ...

... Since moonshine is really reflected sunlight, the full Moon is on the average slightly brighter in mid-winter, when Earth is closest to the Sun. In addition, the distance of the full Moon also varies, due to the ellipticity ("eccentricity") of the Moon's orbit. On 22 December, 1999, the two effects combined to produce the brightest full Moon of the century. ... This year will be the first full moon to occur on the winter solstice, Dec. 22nd, commonly called the first day of winter. ...

... Galileo Probe . The Galileo spacecraft was designed to study Jupiter's atmosphere, satellites, and surrounding magnetosphere for two years. ... From there, Galileo will spend more than five years traveling to Jupiter, where it will become the first spacecraft to make direct measurements from an instrumented probe within Jupiter's atmosphere. ... This image, taken by the Hubble Space Telescope, shows the predicted site at which the Galileo Probe will enter Jupiter's atmosphere on December 7, 1995. ...

... The Sun is the closest star to us, and a regular object in our Galaxy. Solar activity manifests itself, primarily, in solar flares - episodic explosive energy release in the form of electromagnetic radiation and high energy particles (electrons and protons). The nature of the flares is related to cyclic variations of global and local magnetic fields in the atmosphere of the Sun. ... Such formations are called active regions. ...

... The expansion is measured as a number called the Hubble Constant . ... Our value is about 20% lower than the one got with the Hubble Space Telescope in 1994," said Dr Jim Lovell, leader of the team that made the measurement. The Hubble Constant is named after American astronomer Edwin Hubble, who in the 1920s found that other galaxies were moving away from ours. ... The Hubble Constant links the galaxy's distance with its speed." ... A short run-down on the Hubble Constant: . ...

... WISE is achieving 5sigma point source sensitivities better than 0.08, 0.11, 1, and 6 mJy in unconfused regions on the ecliptic in bands centered at wavelengths of 3.4, 4.6, 12, and 22 mum. ... The WISE All-Sky Release Source Catalog is available in compressed (gzip or bzip2) ascii form. ... Users should be aware that the Catalog table is extremely large. ... For complete documentation of the WISE All-Sky Release Source Catalog and the All-Sky Data Release, please see the Explanatory Supplement . ...

... HST Overview . ... CONTENTS: -Update on STIS Situation -Calibration Close-out Highlights -Doppler Correction Errors -Cross-dispersion Plate Scale Corrections -CALSTIS V2.17 Release Notes -Support for STIS Imaging Data in Multidrizzle -Recently published Instrument Science Reports (ISRs) -Fix for CALHRS flux error +----------------------------------------------------------+ Update on STIS Situation We provide an update on the current status of STIS operations and future plans for the instrument. ...