... I see the same problem all the time in undergraduate assignments: someone comes up with an answer that is clearly, wildly, hopelessly wrong (e.g. the mass of some star is 0.7 kg, or an asteroid is travelling at 1010 m s-1 (faster than light), or the Earth took 1011 years to form (much longer than the age of the universe). ... This means that every valid equation should work equally well, regardless of the units you use (as long as they are self consistent). ... Do you think this could be correct? ...

Next: SAOTk and TclXPA: Tcl/Tk Extensions for Astronomy . Up: Use of Scripting Language . ... The staff of the Astronomical Data Center at GSFC (ADC, http://adc.gsfc.nasa.gov ) is involved in a research project to define the XML format for the metadata of an astronomical repository and for large data tables. In the process, an XML tool box is being developed for importation, enhancement, and distribution of published data and their metadata documents. ...

... With me I have Dennis Webb, who's been here in Moscow for the last ten days with me. Dennis has had an interesting experience while he's been over there, and we're going to talk about it. Dennis, before we get started on that, why don't you tell us what the origin of your trip is and was, and what your normal job is and what you were doing. Webb: Okay, Rich. ... I'm starting to think, now, okay, they're going to hold me until I get a valid visa. ... Return to JSC Oral History Website . ...

... 33, No. 5, pp. 332­339. i Young Nuclei in Dwarf Elliptical Galaxies I. V. Chilingarian1, 1 2 2 ** , O. K. Sil'chenko1, V. L. Afanasiev2 , and Ph. ... In all three galaxies, the luminosity-weighted age of the nuclei (4 Gyr) is considerably younger than that of the population in the outer regions of the galaxies. ... Kinematically decoupled structures associated with a young metal-rich stellar population can be formed precisely through a dissipative merger of gas-rich galaxies several Gyr ago. ...