Active Galactic Nuclei: Quasars, Jets, and Feedback
A deep guide to active galactic nuclei—accretion disks, jets, the unified model, SMBH growth, feedback, and how AGN shape galaxies across cosmic time.

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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A deep guide to active galactic nuclei—accretion disks, jets, the unified model, SMBH growth, feedback, and how AGN shape galaxies across cosmic time.
Learn the differences between Greenough and CMO stereo microscopes, including optics, image quality, accessories, and use cases to choose the right system.

Sitting in front of a microscope for long hours will cause significant discomfort no matter what model you use. Unfortunately, that is just part of the job. However, there is a way to make the task less stressful on your body and more tolerable with microscopic ergonomics. Manufacturers are now considering the ergonomics of their