Space Telescope

See what the James Webb Space Telescope is observing now, decide if tonight is worth watching for meteors, find your next visible ISS pass, and follow upcoming rocket launches. Space Telescope brings live mission data, practical stargazing tools, and beautiful space imagery together in one astronomy app.

James Webb Space Telescope tracker

Follow Webb's current observation target, scientific category, proposal, instruments, execution status, and scheduled start and end times. The live view refreshes every five minutes while open, with links to proposal details and the full observation schedule.

Meteor shower tracker and planner

Turn an annual meteor shower calendar into a practical plan for your sky. Choose your location and sky darkness to see:

- A realistic meteor-per-hour range
- The best viewing window and where to look
- Moon interference and radiant visibility
- Estimates for 30, 60, or 90 minutes outside
- Peak-night previews, shower speed, peak shape, and observing tips

Set two useful meteor alerts: one the evening before and another when the best viewing window opens. If you see an exceptional fireball, jump to the official reporting form. Cloud cover is not included, so check local weather before leaving.

Rocket launch tracker

Browse upcoming launches with live countdowns, mission status, provider, rocket, pad, launch window, webcast link, and mission description. Opt in to a reminder 15 minutes before liftoff.

ISS tracker and visible passes

See live International Space Station latitude, longitude, altitude, velocity, orbit data, crew, expeditions, dockings, visiting vehicles, and upcoming ISS missions. Calculate seven days of passes for your location, including pass quality, direction, peak elevation, and duration. Set a 10-minute alert or add a pass to your calendar.

Space telescope galleries and mission guides

Explore imagery and mission details for James Webb, Hubble, Chandra, the Nancy Grace Roman Space Telescope, Artemis, Mars, and the ISS. Follow Roman's launch countdown, instruments, journey to L2, and comparison with Webb and Hubble. Enable only the gallery alerts you want. Like, comment, share, and browse telescope facts, observatories, discoveries, and astronauts.

NASA Astronomy Picture of the Day

Open the daily APOD image or video with its expert explanation. Share it and opt in to a daily alert.

More astronomy tools

- Tonight Sky: sunrise, sunset, Moon phase, illumination, and twilight for your location
- Space Weather: Kp index, solar wind, aurora probability, and active alerts
- Cosmic Calendar: meteor showers, eclipses, and other sky events
- Exoplanet database: discovery method and year, distance, orbit, mass, radius, temperature, host star, and habitable-zone marker
- Community astrophotography: upload photos with equipment and observing details, then like and comment
- Space wallpapers: browse and share phone wallpapers; premium items are marked in the app
- Astronomy quizzes, points, levels, and global leaderboards
- Ask an Astronomer and real-time chat rooms in 10 languages
- Full interface available in English and Spanish

Whether you follow Webb every day, plan a Perseids or Geminids watch, photograph the night sky, teach astronomy, or want to know when the ISS will cross your sky, Space Telescope keeps the useful details in one place.

Space Telescope is an independent astronomy app and is not affiliated with or endorsed by NASA, ESA, STScI, SpaceX, or any launch provider. Data and imagery are credited to their respective sources.