... A Chemically Decoupled Nucleus and Inner Polar Ring of the SBb Galaxy NGC 4548 O. K. Sil'chenko* Sternberg Astronomical Institute, Universitetskii pr. ... This nucleus, a probable circumnuclear disk coplanar with the global galactic disk, is embedded in the bulge whose stars are generally also young, T 4 Gyr, although they are a factor of 2.5 more metalpoor. ... O. K. Sil'chenko, Pis'ma Astron. ... It remains to assume that the gas at the center of NGC 4548 rotates in an inclined plane. ...

... This image, and many other fascinating views from space, can be found at http://earth.jsc.nasa.gov. ... There is a real story besides what's in the news. ... Our mission is too important. ... In their work, HHFO team members explore many topics, such as: x Where should the foot restraints be in the International Space Station to ensure easy access to work stations? x Will an astronaut's spacesuit still fit in microgravity? x How can the shuttle's computer and warning systems be made more efficient? ...

... We have modelled the spectral energy distri­ bution of the carbon­rich star UU Aurigae, which shows an excess flux in the far infrared and sub­millimeter re­ gions, in terms of a detached shell generated by an episode of higher (than the current) mass loss rate. ... For the SiC shell, inner radius 3 R \Lambda and dust mass loss rate of 6:4 10 \Gamma11 M fi yr \Gamma1 ; for the AC shell, inner ra­ dius 9 R \Lambda and dust mass loss rate 2:0 10 \Gamma10 M fi yr \Gamma1 . ...