Astronomy
Astronomy guides — stargazing, telescopes, constellations, astrophotography, deep sky objects, solar system observation, and cosmology.
Articles in this section
Astronomy for Beginners: Your First Guide to the Night Sky
Getting started in astronomy — naked-eye observation techniques, choosing binoculars and telescopes, reading star …
Choosing and Using a Telescope: A Beginner's Guide
Complete guide to telescopes — refractors, reflectors, catadioptric designs, equatorial and alt-azimuth mounts, …
Guide to Constellations and Star Hopping Techniques
Learn major constellations by season, star hopping techniques for navigating the night sky, asterisms like the Big …
Observing the Solar System: Planets, Moons, Asteroids, and Comets
Viewing planets, moons, asteroids, and comets — best times for planetary observation, what features to look for, how to …
Deep Sky Objects: Galaxies, Nebulae, and Star Clusters
Observing deep sky objects — complete Messier and NGC catalog guide, galaxy types, emission and reflection nebulae, open …
Astrophotography for Beginners: Capturing the Cosmos
Introduction to astrophotography — camera types, telescope mounts, tracking systems, stacking software, long exposure …
Lunar Observation Guide: Exploring Earth's Moon
Observing the Moon — phases and libration, major features including craters, maria, mountain ranges, rilles and domes, …
The Planets: A Complete Observation Guide
Detailed guide to observing each planet from Mercury through Neptune — best viewing windows and oppositions, surface …
Meteor Showers: Viewing and Understanding Cosmic Debris
Guide to major meteor showers — Perseids, Geminids, Leonids, Quadrantids, Orionids. Understanding radiant points, peak …
Solar and Lunar Eclipses: Complete Viewing Guide
Understanding solar and lunar eclipses — types including total, annular, partial and penumbral, safe viewing methods for …
Light Pollution and Dark Sky Preservation
Impact of light pollution on astronomy, Bortle Dark-Sky Scale, finding dark sky locations, light pollution filters, dark …
Astrobiology: The Science of Life in the Universe
Explore astrobiology — habitable zones around stars, extremophiles on Earth, biosignatures in exoplanet atmospheres, …
Exoplanets and Planetary Systems: Worlds Beyond Our Sun
Discovering and characterizing exoplanets — transit method and TESS mission, radial velocity technique, direct imaging, …
Stellar Evolution: The Life Cycle of Stars
Life cycle of stars from protostars to stellar remnants — main sequence fusion, red giant phase, white dwarfs, …
Cosmology: Understanding the Origin and Evolution of the Universe
Introduction to cosmology — the Big Bang theory, cosmic microwave background radiation, dark matter and dark energy, …
Keeping Up with Space News and Missions
Following current space exploration — NASA missions, ESA programs, SpaceX launches, James Webb Space Telescope …
Amateur Astronomy Research: Contributing to Science
Complete guide to amateur astronomy research — variable star observation with AAVSO, asteroid tracking, exoplanet …
Astronomy Software and Apps: Essential Tools for Stargazers
Guide to essential astronomy software — planetarium apps like Stellarium and SkySafari, observation planning tools, …