***SkySafari has been upgraded! For more information on the NEW SkySafari 5 Pro for Android, visit SkySafariAstronomy.com or search for SkySafari 5 Pro on Google Play!***
SkySafari 4 Pro has the largest database of any astronomy app, period. It adds over 1.2 GB of data to SkySafari 4 Plus, including 25 million stars from both Hubble Guide Star catalogs, over 740,000 galaxies down to 18th magnitude, and over 630,000 solar system objects - including every comet and asteroid ever discovered. It simulates the view from anywhere in the solar system - or beyond - up to a million years in the past or future.