Gravitational Lensing: Nature’s Deep-Space Telescope
Discover how gravitational lensing bends light, reveals dark matter, finds exoplanets, and measures cosmic expansion—with tips, tools, and landmark cases.

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.
Discover how gravitational lensing bends light, reveals dark matter, finds exoplanets, and measures cosmic expansion—with tips, tools, and landmark cases.
Find the Summer Triangle and explore Vega, Deneb, and Altair. Star‑hopping tips, deep‑sky targets, cultural lore, and astrophysics inside this iconic asterism.
Learn how microscope condensers and diaphragms shape illumination. Compare Abbe vs aplanatic designs, phase/darkfield/DIC options, and compatibility tips.