Legend:

IconsPage/ubuntu.png - installed by default in Ubuntu
IconsPage/kubuntu.png - installed by default in Kubuntu
IconsPage/edubuntu.png - installed by default in Edubuntu
IconsPage/ubuntu_grey.png - Main (officially supported) Ubuntu repository, not installed by default
IconsPage/community.png - Universe (community maintained) repository
IconsPage/important.png - Multiverse (non-free) repository

Those installed by default are in Main (officially supported) Ubuntu repository. For information about the Ubuntu repositories see Repositories. Clicking on the icon next a program should take you to information about the Ubuntu package.

Astronomy

  • KStars http://packages.ubuntu.com/kstars - A virtual planetarium.

  • XEphem - A very comprehensive ephemeris/planetarium. Old interface.

  • Nightfall - An astronomy application for fun, education, and science.

  • Stellarium http://packages.ubuntu.com/stellarium - Stellarium is a free open source planetarium that shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

  • Google Earth http://packages.ubuntu.com/googleearth-package - 3D earth viewing application includes a sky view.

More Astronomy applications - UbuntuScience/Astronomy

Biology

  • BioPerl http://packages.ubuntu.com/bioperl - a collection of Perl modules that are useful for programmers in bioinformatics/biology

  • ClustalW http://packages.ubuntu.com/clustalw - Global multiple nucleotide or peptide sequence alignment