... An Active Sun During a Total Eclipse . ... Taking advantage of such, the above image shows the solar eclipse earlier this month as covered and uncovered by several different solar observatories. ... The outermost image -- showing the outflowing solar corona -- was taken by LASCO ten minutes after the eclipse and shows an outflowing solar corona. ... NASA Official: Jay Norris. ... Publications with keywords: Sun - eclipse - solar maximum . Publications with words: Sun - eclipse - solar maximum . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. September 20, 1999 . Io in True Color . Credit: Galileo Project , JPL , NASA . ... This recently released picture , showing Io's true colors, was taken in July by the Galileo spacecraft currently orbiting Jupiter. Io's colors derive from sulfur and molten silicate rock . ... About APOD > . ... NASA Technical Rep.: ...

... May 15, 1998 . TRACE and the Active Sun . Credit: Courtesy CFA , TRACE Team , NASA . ... It shows graceful arcs of intensely hot gas suspended in powerful looping magnetic fields which soar above a solar active region. ... By operating the TRACE instruments during the Sun's increasingly active phase, scientists hope to explore the connections between complex solar magnetic fields and potentially hazardous solar eruptions. ... About APOD > . ... NASA Technical Rep.: ...

Ganymede is the largest moon in our solar system, larger even than the planets Pluto and Mercury. ... Ganymede's surface consists of two main types of terrain: old, dark polygonal units, and young, bright valleys and ridges (see figure 11 ). ... In a similar way, hitting a large block of ice with a hammer makes white marks. ... Ganymede as seen by Voyager 2. ... Because Voyager couldn't spot any large impact craters, scientists have concluded that the moon's surface is young. ... Moon . ... Europa . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... active galactic nuclei . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . ... This close-up look at Comet ISON (C/2012 S1) is from NASAтАЩs Hubble Space Telescope. This image was captured on 10 April 2013, when the comet was at a distance of 386 million miles (slightly further than Jupiter) from the Sun. ... Image credit: NASA, ESA, J.-Y. Li (Planetary Science Institute), and the Hubble Comet ISON Imaging Science Team) . ...

... Distant galaxies are faint and have small angular sizes, therefore their study has remained the province of the largest telescopes. ... For this reason, one of the early observations that was scheduled immediately after the first servicing mission of HST in December 1993 to repair spherical aberration was the re-imaging of the cluster of galaxies 0939+4713 at z = 0.4 that had been observed previously by Dressler et al. (1994) from both the ground and with the aberrated HST. ... huizinga@stsci.edu . ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Survey Telescopes . ... Star Clusters . ... FLAMES . ... 100 Hours of Astronomy . ... IMAX€о 3D Film Hidden Universe . ... This image, the first to be released publicly from VISTA, the worldтАЩs largest survey telescope, shows the spectacular star-forming region known as the Flame Nebula, or NGC 2024, in the constellation of Orion (the Hunter) and its surroundings. ...

... The picture shows sketches of the optical and ultraviolet (top, left) and X-ray (top, right) spectra of a typical quasar or AGN (Active Galactic Nucleus). These spectra are full of sharp features due to the interaction of atoms with light ('atomic features'). They can be high (= bright) points, called 'emission lines' or low (= dark) points, called 'absorption lines' . ... Broad Emission Lines ("BELs") [seen in 100% of AGN], . ... Broad Absorption Lines ("BALs") [see in only 10% of AGN], . ...

Jupiter . ... HST view (true color) 1877k tiff ; 264k gif ; 96k jpg ; 34k jpg . Jupiter Storms (HST) 37k jpg ; 169k gif ; 1800k tiff ; ( caption ) . ... Jupiter and Ganymede 60k jpg . Jupiter with Narrow Angle Camera (Violet filter) 359k gif . Jupiter with Narrow Angle Camera (Violet filter) 182k gif . Jupiter with Narrow Angle Camera (Violet filter) 274k gif . Jupiter with Narrow Angle Camera (Violet filter) 291k gif . ... Jupiter with Wide Angle Camera (Orange filter) 324k gif . ...

... Active Disk Building in a Local HI-massive LIRG . by Michelle Cluver (UCT) . ... However, the mid-infrared uncovers a star-forming disk housing an intense starburst with a star formation rate of approximately 21 Msun/yr (Cluver et al. 2008 , 2010 ).This luminous infrared galaxy (LIRG) appears to be undergoing asymmetric inside-out disk building, with a star formation efficiency comparable to local disk galaxies and quite different to merger-driven starbursts. ... today * ATNF | ...