Idea about new info table (photoshop mokeup):
new into mokeup.png
Info table becomes a window, which is fully transparent (invisible) in normal mode, showing only text, but appears when user hover mouse cursor over it. It could have an expand/collapse buttons, to show more/less detailed description of a selected object, it also could have a close button (and a button on the left-size toolbar to bring it back). Or maybe it could behave like a second left-side toolbar, showing itself when mouse cursor is near the upper-left side of the screen; could be "pinned" to be always visible.
Very old idea - add a tiny switch button next to each measure unit, which will appear when user hover mouse cursor over it. Pressing on it will switch parsecs to light years, Kelvins to Celsius to Fahrenheit, and so on.
I also experimented with typing the planet class name on the Solar System browser, but found it too messy (too much text, visually overloaded).
Love the info table change and ideas, the cell descriptions not so much.
EDIT: Looking at it differently, the cell descriptions do look nice. Hope this makes it to 0.981.