... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... 2010 November 29 . Dark Belt Reappearing on Jupiter . Credit: NASA's JPL , U. Oxford , UC Berkeley , Gemini Obs. ... Explanation: Why are planet-circling clouds disappearing and reappearing on Jupiter? ... Earlier this year, unexpectedly, Jupiter's dark Southern Equatorial Belt (SEB) disappeared. ... Detailed professional observations revealed that high-flying light-colored ammonia -based clouds formed over the planet-circling dark belt. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... ATCA | ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

There is often dust associated with ionized regions. Compact HII regions usually have associated dust from a molecular cloud in which the massive star is being "born". ... For such stars the dust is not produced by the star, and a variety of dust features are observed. The planetary nebulae also usually have associated dust from the previous stage of evolution where they were either carbon stars or M-type giants. ... The feature near 11.5 microns in the IC 418 spectrum may be due to SiC dust. ...

... Tonight's Sky . ... Sky this Month . ... Star Atlas . ... stars . ... The Sky This Week: April 1 - 10 . ... Observing springtime deep-sky objects with a large telescope . ... Why do some stars appear to flash a variety of different colors when you look at them through a telescope? ... So, Earthт??s atmosphere will bend some colors from especially bright stars more so than others, which makes the source look like itт??s flashing colors. Get instant access to subscriber content on Astronomy.com! ...

A press release on the Canadian Galactic Plane Survey was associated with this poster. ... Below are maps of HI emission, HISA, and 12 CO emission in the eastern 25% of the survey, given as projections along the velocity ( Figure 1 ) and latitude ( Figure 2 ) axes. ... 2000, A. J. , submitted . ... GIF | ... We are developing automated methods of locating HISA in velocity cubes by removing large-scale emission in space and velocity and flagging small-scale dark residuals. ...

... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... ESO Supernova . ... Star Clusters . ... Stars@ESO . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... Future Projects . ... This NASA/ESA Hubble Space Telescope image shows the positions of the past, present and predicted future appearances of the Refsdal supernova behind the galaxy cluster€а MACS J1149+2223 . ...

... The featured image combines infrared exposures from the Hale Telescope on Mt. ... Though some might claim to see six planets, in this seaside panoramic view all five celestial wanderers were found above the horizon along with a bright waning gibbous Moon on January 27. Hidden Galaxy IC 342 . ... But they are found in a region of space where galaxies tend to gather, on the eastern side of the nearby Virgo Galaxy Cluster. An Airglow Fan from Lake to Sky . ... Big Dipper, Deep Sky . ...

Ariel . ... Ariel [AIR-ee-al] is a relatively small satellite and is the brightest moon of Uranus. ... This image of Ariel shows a world pock-marked with craters. ... This image is a mercator map of Ariel. ... This image is a polar stereographic map of the southern hemisphere of Ariel. ... This image is an orthographic view of Ariel centered at -66 degrees latitude and 316 degrees longitude. ... This image of Ariel is at the same geometry of the highest resolution mosaic of Ariel taken by Voyager. ...

... In 1995, two intermittent detector features (aka hotspots) particular to the ROSAT HRI have been noticed on the edge of the HRI field. ... To view the hotspots: . HS #1 > xdisplay "rh123456n00.qp[key=(rawx,rawy)][186:697,230:741]" HS #2 > xdisplay "rh123456n00.qp[key=(rawx,rawy)][3380:3891,297:808]" HS #3 > xdisplay "rh123456n00.qp[key=(rawx,rawy)][2753:3252,3065:3564]" OR > xexamine rh...qp[key=(rawx,rawy)] [HS #1, if present, appears as a spot in the lower left; HS #2 in the lower right.] ...