"We have talked in detail about the limitations of Ubuntu
Software Center in its current form. But that was a discussion
strictly from a functionality and design point of view. What about
the hundreds and thousands of open source applications available in
Ubuntu Software Center? Below, we will list 20 of the most highly
rated and downloaded applications of the lot.
" Stellarium Planetarium Software: Stellarium is a free and open
source planetarium for your computer. It shows a realistic sky in
3D, just like what you see with the naked eye, binoculars or a
telescope. It boasts of a star catalogue with over 600,000 stars.
No wonder why Stellarium is one among the most favored applications
for Astrnomy enthusiasts in Linux."