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stellarium-web.org favicon

View the night sky from anywhere in your browser

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Explore the night sky with an interactive online star map that lets you view stars, planets, and constellations from any location, right in your browser.

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Plan and safely view the 2024 solar eclipse

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Eclipse2024.org offers expert info and tools to safely view the 2024 total solar eclipse in North America.

server1.wikisky.org favicon

Explore the night sky interactively online

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Explore stars, galaxies, and constellations with an interactive online sky map for astronomy lovers and curious stargazers.

stellarium.org favicon

Explore a realistic 3D night sky from home

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Stellarium lets you explore a 3D night sky on your computer, showing stars, planets, and constellations just as you'd see them in real life.

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Explore the universe with interactive star maps

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Explore interactive maps of the universe and view astronomical data from telescopes worldwide using this web-based planetarium tool.

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Browse an open database of asteroids and comets

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Explore a growing database of asteroids, comets, and other space objects. Discover detailed info about the universe in this open-source resource.

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View and verify registered stars worldwide

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Browse and verify registered stars in an international celestial object registry. Explore a prestigious catalog and check your star registration details.

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Track satellites and view real-time orbital data

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CelesTrak offers up-to-date satellite tracking data, tools, and resources for anyone interested in monitoring objects in Earth orbit.

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Simulate space scenarios with custom planets and physics

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Explore and simulate solar systems, exoplanets, and galaxy collisions with adjustable physics in a 3D gravity simulator.

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Access global sky survey data and research tools

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Explore the universe with SDSS-V—access sky-wide optical and IR data, research tools, and collaborative resources for astronomy and science education.

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Explore a seamless, realistic virtual universe

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SpaceEngine lets you explore a scientifically accurate virtual universe, traveling from stars to galaxies and landing on planets on your computer.

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View interactive night sky charts and events

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Explore astronomy news and interactive night sky charts to discover planets, stars, and events happening above you. Perfect for stargazers and enthusiasts.

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Access deep-space survey data and galaxy maps

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Explore massive spectroscopic surveys of the universe, our galaxy, and exoplanets with SDSS-III's data, tools, and research results.

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Discover astronomy through hands-on science learning

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Explore astronomy and science literacy with the John J. McCarthy Observatory, offering educational resources and telescope experiences.

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Experience astronomy shows and educational programs

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Explore the universe with Merrillville Community Planetarium offering shows and programs for schools and the public in Northwest Indiana.

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Track and discover asteroids and comets worldwide

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The IAU Minor Planet Center tracks and shares data on asteroids, comets, and minor planets, helping astronomers worldwide discover and monitor these objects.

legacysurvey.org favicon

View and download deep-sky astronomical survey data

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Explore detailed optical and infrared maps of the extragalactic sky, access survey data, and discover astronomical resources from the DESI Legacy Surveys.

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Discover cosmic radio images and research data

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Explore the universe with the MWA Telescope—access radio astronomy data, learn about cosmic discoveries, and connect with the science community.

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Explore detailed images and data from the Sloan Digital Sky Survey with interactive tools for astronomy research and discovery.

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Experience immersive 3D astronomy shows

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Explore astronomy and immersive 3D shows at Nehru Planetarium with workshops, exhibitions, and skywatch events.

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Find and join hackerspaces near you

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Discover and connect with community-run hackerspaces worldwide to collaborate, tinker with tech, share ideas, and learn from fellow enthusiasts.

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Join a worldwide juggling community

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Connect with jugglers worldwide, access resources, join events, and become part of a global juggling community. Site in English.

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Connect with a global high-IQ community

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Intertel is an international community for people with high intellectual ability, connecting members from diverse backgrounds for networking and enrichment.

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Discover and share Irish traditional tunes

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Join a lively online community for traditional Irish music—discover tunes, share recordings, find local sessions, and connect with fellow enthusiasts.

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Connect with the world’s largest asexual community

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Asexuality.org is a welcoming community and resource hub for asexual people and allies, offering forums and information about asexuality and related topics.

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Connect with fellow MSX enthusiasts worldwide

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A vibrant online community for MSX computer fans, sharing news, events, archives, and resources about the classic 8-bit MSX system.

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Join the nationwide chess community

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US Chess Federation connects chess players across the US, offering resources, events, and support to help members enjoy and improve at chess.

Worldwide Observers.org Alternatives

hirise.lpl.arizona.edu favicon

View stunning high-res images of Mars

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Explore detailed images of Mars from NASA's HiRISE camera, view science updates, and access a vast archive of high-resolution planetary photos.

djm.cc favicon

Find constellations by sky coordinates instantly

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Easily find which constellation contains any sky coordinates with this astronomy tool designed for quick star mapping and constellation identification.

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Find stars and celestial objects with ease

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MeMstar® helps you easily locate celestial objects with a pointing device, making stargazing and astronomy more accessible for everyone.

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Identify stars and constellations instantly

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Explore the night sky with an interactive star map and astronomy tool that helps you identify stars, planets, and constellations in real time.

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Get real-time asteroid impact alerts

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ATLAS is an asteroid impact early warning system that scans the sky for moving objects and alerts about potential asteroid threats to Earth.

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Get custom high-quality astronomical instruments

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Astrosysteme designs and manufactures high-quality custom astronomical instruments for sky observation enthusiasts and professionals.

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Travel the solar system from your car

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Explore the Maine Solar System Model, a large-scale 3D representation of the solar system spanning 100 miles along U.S. Route 1.

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Get expert advice on choosing your telescope

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Bandit de Nuit offers astronomy tips and telescope guides for enthusiasts passionate about exploring the night sky.

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Hear live meteor echoes from Earth’s atmosphere

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Listen live to meteor echoes as meteors strike Earth's atmosphere, with real-time radio data and meteor shower info.

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Explore deep space with advanced millimeter-wave telescope

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Russian space observatory project with a 10-meter telescope studying the universe in millimeter and infrared wavelengths.

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