Ocean Worlds: Europa, Enceladus, Titan, and Beyond
Explore evidence for subsurface oceans on Europa, Enceladus, Titan, Ganymede, and more—chemistry, habitability, tidal heating, and missions to explore them.

Guides to help with your Stargazing Adventure

Information on Galaxies, Stars, Constellations, Planets, Moons, Comets and Asteroids
Listen to Bernard Miller describe his journey into AstroPhotography and detail how he captured this stunning image of the Sculptor Galaxy.
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Drew Evans talks about his passion for astrophotography, the equipment used and tips for post processing image data.
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Hear D.j Van Bourgondien as he talks about using his Celestron EdgeHD 8″ telescope to capture this image of the Fireworks Galaxy
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Below are a selection of our Articles, to find more click on one of the sections above, or use the Menu at the top of the page.
Explore evidence for subsurface oceans on Europa, Enceladus, Titan, Ganymede, and more—chemistry, habitability, tidal heating, and missions to explore them.
Explore how black holes influence cosmic structures and our understanding of the universe.
Step-by-step deep-sky astrophotography processing guide: calibrate, stack, and polish images with PixInsight, Siril, and Photoshop. Pro tips and workflows.