Lightroom on the Venue 8 Pro

I was able to load Lightroom 5 on my Venue Pro 8. Seems a bit awkward to use with just the touch screen. Would a stylus help with drag and drop or am I better off going with a mouse?

Same with Stellarium. Is there a better sky map app for Windows 8 on a touchscreen?

Lightroom was not designed for touch. Use a mouse, or Wacom, i.e., Bamboo.