天球模擬器 vs COSMOS

Astronomy Teaching System is an interactive application designed for learning and exploring basic astronomy. Through visual simulations, it helps users intuitively understand complex celestial geometry and the patterns of celestial motion. Core Features: • Celestial Sphere and Diurnal Motion Simulation: Observe the celestial coordinate system with support for toggling Right Ascension RA and Declination Dec grid lines. Users can freely adjust the observer's latitude 90°N to 90°S via a slider to see real-time changes in the starry sky and stellar tracks at different latitudes. • Dual Perspectives and Relative Motion: Provides Earth Rotation and Celestial Rotation modes, allowing you to thoroughly understand the principles of diurnal motion from different reference frames. You can tap stars on the screen to hide or show specific celestial bodies. • Solar Path through the Seasons: Explore the changing position of the sun on the ecliptic. Use an intuitive date slider 1/1 to 12/31 to observe changes in solar altitude angles and daylight tracks during the equinoxes and solstices. • Space and Earth Mode Toggle: In Space Mode, view Earth's orbital path and axial tilt in the solar system from a bird's-eye perspective. In Earth Mode, view the daily solar path in the local sky from an observer's first-person perspective. • Rotation and Revolution Control: Supports independent toggling of Earth's rotation and revolution, with an acceleration feature for quick demonstrations of long-term astronomical changes. This application offers intuitive touch-to-zoom and perspective adjustment features, making it an ideal supplementary learning tool for students, educators, and astronomy enthusiasts.

Explore the universe from the palm of your hand. COSMOS is a space exploration app that takes you on an immersive journey through the solar system, distant galaxies, black holes, asteroid belts, and dwarf planets - all with stunning visuals and real astronomical data. EXPLORE 5 COSMIC REGIONS Milky Way - FREE Start your journey in our home solar system. Visit all 8 planets, 13 moons, and the Sun. Tap any world to discover facts, stunning imagery, and take a quiz to test your knowledge. Andromeda Travel 2.5 million light years to our nearest spiral galaxy. Explore 5 deep-space objects including satellite galaxies M32 & M110 and the supermassive black hole at its core. Black Holes Confront the most extreme objects in the universe. From Sagittarius A* at the heart of our galaxy to M87* - the first black hole ever photographed. Asteroids Journey through the asteroid belt between Mars and Jupiter. Meet Vesta, Bennu, Ryugu, Psyche and other rocky relics from the early Solar System. Dwarf Planets Venture beyond Neptune to discover Pluto, Eris, Haumea, Makemake, and Ceres - worlds too small to be planets, too fascinating to ignore. LEARN AS YOU EXPLORE Every object comes with detailed facts and a built-in quiz. Test yourself on difficulty levels from Quick to Expert and earn badges as you master the cosmos. 13 BADGES TO EARN Track your progress and unlock achievement badges as you explore each region. Can you earn the ultimate "Universe Mapped" badge by visiting every object? PRIVACY FIRST No account required. No ads. No tracking. All your progress is stored locally on your device. COSMOS PREMIUM Unlock all 4 premium regions with a single one-time purchase. No subscription, no hidden fees - pay once, explore forever. Start your journey today. The universe is waiting. Privacy Policy: https://clkcompany.github.io/cosmosapp/privacy-policy.html Terms of Service: https://clkcompany.github.io/cosmosapp/terms-of-service.html License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact: tech@clk.company