The app simulates the night sky from any location on Earth, past or future. It includes over 120,000 stars, celestial objects, and photos, with optional audio narration.
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.
Perform real-time spectral analysis of sounds. View images with adjustable FFT-resolutions, frequency and amplitude scales, and color schemes. Save and share spectrograms. Access bode plot modes with averaging and maximum calculations.