Showing 1–20 of 1,000 ranked alternatives.
Yakov Manshin
View and read explanations
View images and accompanying explanations from NASA’s Astronomy Picture of the Day. Save favorite photos to a personal collection. Access the full APOD archive dating back over 30 years. New images are available daily around midnight ET.
Juicestand Inc
Read , track discoveries, explore
Read and share articles about , exploration, exoplanets, and astrobiology. Follow updates from NASA, ESA, and other agencies. View high-resolution images from observatories. Save and organize favorite stories. Subscribe to alerts for new content.
Lazel, Inc.
Explore planets, read eBooks, track progress
Explore educational content with interactive space-themed planets featuring eBooks and activities. Complete quizzes and track progress via a dashboard. Designed for K-5 students, it includes privacy features and is free to download.
Pocket Labs.
Design galaxies, place planets, simulate orbits
Create and simulate a custom with realistic physics. Adjust planet sizes, positions, and orbits. Explore 3D space environments and test gravitational interactions. Save and share custom solar systems.
Mark Hambly
View today's , random, or favorites
View and share Pictures of the Day. Access current and past APODs. Browse feeds of random or favorite images. Save and share preferred APODs. Display APODs via widgets on home screen.
KAKHA GIORGASHVILI
Track celestial objects and view telescope data
Track the Space Telescope’s mission with real-time updates and news. View high-resolution images and scientific data. Explore telescope specifications and mission milestones. Receive alerts on major discoveries and events.
Toca Boca AB
Create stories, design worlds, explore freely
Create and explore imaginary worlds with customizable characters and environments. Roleplay as different characters like teachers or vets. Design and customize avatars and settings. Save and share stories with friends.
Chegg, Inc.
And prepare for exams
Access materials, solutions, and flashcards for multiple subjects. Search for step-by-step explanations, practice problems, and subject-specific resources. Manage course notes and track progress across different subjects.
APPS BAY LIMITED
Explore space images and astronomy news
Explore astronomy with daily high-quality space images and wallpapers. Access latest NASA news and discoveries. Search astronomy keywords in a comprehensive database. Learn about missions, spacecraft, and space observations.
Celestial Dynamics AG
Track celestial events and time
Explore the night sky with three perspectives: sky, Earth, and solar system. View star maps, constellations, and celestial events. Use augmented reality for interactive exploration. Display high-resolution Earth globe and solar system models.
Wobbleworks LLC
Explore stars, planets, and galaxies
Explore celestial objects with detailed star maps and constellation guides. View 5 million stars and 5,000 years of eclipses. Track planets, moons, and Messier objects. Receive on-device recommendations based on location and time.
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