Things might be getting all Christmassy on Earth, but space is getting into the holiday spirit as well. This is what is now ...

The following SAS statements produce Figure 8.1: data compact ... end; return; run; proc cluster data=compact outtree=tree method=single noprint; run; proc tree noprint out=out n=3; copy x y; run; ...

NGC 2264 is a cluster of young stars that has been colored and rotated to emphasize its nickname of ... [+] the “Christmas Tree Cluster”. Astronomers have released new “Christmas Tree ...