Another free app that takes wonderful advantage of the iPad.
Description From the Apple Website:
The first official NASA App invites you to discover a wealth of NASA information right on your iPhone or iPod Touch.
The NASA App collects, customizes and delivers an extensive selection of dynamically updated information, images and videos from various online NASA sources in a convenient mobile package. Come explore with us.
• NASA Mission Information
• Live streaming of the NASA TV public channel
• Launch Information & Countdown clocks
• Sighting Opportunities (Visible Passes for the ISS and Shuttle)
• Mission Orbit Trackers
• NASA Image of the Day
• Astronomy Picture of the Day
• NASAImages.org collection of images
• NASA Videos
• NASA Twitter Feeds/Mission Updates
• Facebook® Connect for easy sharing
• Integrated Twitter™ client