Astronomy Picture of the Day . ... The Heart and Soul Nebulas . ... Possibly not, but that is where two bright emission nebulas nicknamed Heart and Soul can be found. ... Tracking major weather patterns on the Solar System's outermost gas giant can help in the understanding of global weather patterns here on Earth. ... Known to some as the Elephant's Trunk Nebula, parts of gas and dust clouds of this star formation region may appear to take on foreboding forms, some nearly human. ...

... 2003 October 15 . Space Rock SQ222 Noticed After Pass . ... An undetected asteroid zipped past the Earth undetected last month in the closest near miss yet recorded -- within a quarter of the distance to the Moon. ... Robert Cash of Minor Planet Research Inc. discovered asteroid 2003 SQ222 in data from the sky-scanning Lowell Observatory Near Earth Object Search (LONEOS). ... About APOD | ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . ... Chandra Proposer's Guide pile up section ] During frame readout, the ACIS CCDs take 40 microsec to (parallel) transfer the charge by one pixel. As a result of this, each frame readout, each pixel is exposed for 40 microsec to a source (plus cosmic X-ray background) at each location along its column. ... Note also that the image does not just trail, it extends along the whole column. ... Chandra Supernova Remnant Catalog . ...

... User Guide ] Task: moment Purpose: Calculate moments of a Miriad image. ... Key: in The input image. No default. ... Key: mom -3: Velocity at peak intensity using a three-point quadratic fit around the peak (km/s). 2: Peak intensity using a three-point quadratic fit (units same as individual channels). ... The moments are calculated independently for each pixel using spectral channels with intensity satisfying the specified clip range. ... Key: axis Axis for which the moment is calculated. ...

... Sun images . ... Active areas . October : 2014 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Alpha . ... Coordinates and other characteristics of active regions are issued for October 09, 2014 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for October 09, 2014 00:31 UT . ...

... Authors: Laurent Loinard 1 2 , Ronald J. Allen 1 We present new interferometric 12 CO(1-0) and single-dish 12 CO(3-2) observations of the central parts of D478, a large (> 200 pc) dark dust cloud located in a quiescent region in the inner disk of M31 where single-dish 12 CO(1-0) and 12 CO(2-1) observations were previously obtained. Only a small fraction (< 15%) of the 12 CO(1-0) flux previously detected in this region with the single-dish telescope is recorded by the interferometer. ...

... a major flood of the entire Upper Mississippi River basin which resulted in very wide spread agricultural and commercial damage. On August 10, an enormous plume of turbid river water was detected extending eastward from the Mississippi River delta region. River water discharged on the western side of the delta flowed eastward around the south side of the delta, joining additional river water discharged from pa