Showing 261–280 of 1,000 ranked alternatives.
Johns Hopkins University Applied Physics Laboratory
Explore space missions and science instruments
Explore ’s mission with real-time imagery and a countdown. View spacecraft data, science instruments, and mission updates. Access educational resources, activities, and news articles. Sync with Apple Watch for quick updates.
QA International
Look up words with images and pronunciations
Look up words with definitions, pronunciations, and high-definition images. Explore over 8,000 labeled images explained in five languages. View word meanings and learn vocabulary through context.
Flying Titans, Inc.
Current date and time formats provided.
The app displays the current date and time in Julian Date, Modified Julian Date, Truncated Julian Date, and Dublin Julian Date formats. It also provides the Gregorian ISO 8601 numeric date time format.
Jennifer Sipila
Explore Mars images by camera and date
Explore Mars images from NASA's Curiosity using camera, date, and sol date filters. View archived photos and learn about Mars time and the mission. Save selected images to your device's photo library. Share photos via email.
佩佩 伍
Learn words with audio, pictures, and pronunciation
Learn through listening, speaking, reading, and writing exercises. Classify words into categories like animals, fruits, and colors. Adjust playback speed and receive AI-based pronunciation feedback. Compare voice recordings for accuracy.
Mike Smithwick
Explore lunar surface in 360 degrees
Explore lunar landing sites with 360-degree panoramas. Rotate device to navigate terrain. View the Sun and Earth in real-time. Listen to mission audio and optional narration. Add annotations and interact with virtual elements.
Marwan Shaban
Track celestial objects and record sightings
Track and log sightings of 150 visible satellites with time and location details. Record observations and note when each was seen. Browse future passes in preview mode. Explore 9000 visible stars and major constellations with educational notes.
Joseph Rupertus
Explore celestial bodies in 3D
Explore the Solar System with 3D models of the Sun, 8 planets, 5 dwarf planets, and over 20 major moons. View real-time positions of celestial bodies. Rotate, zoom, and navigate through the Solar System.
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