Moon
- Moon / Planet visible positions in night sky
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- Constellation Guide
- Moon - Blue Moon
- Moon - Full Moon Dates and Names for 2019 (Farmers' Almanac)
- Moon - Full moon schedule for 2019
- Moon - Full moon schedule for 2020 (Blue Moon Oct 31, 2020!)
- Moon - Full moon schedule for 2021
- Moon - Full moon schedule for 2022
- Moon - Halloween Full Moons / Blue Moons (October 31, 2020, 2039, 2058, 2077, 2096)
- Moon - Understanding The Moon Phases
- Moon - Why Do We Only See One Side of the Moon?
- Moon Phase Calculator
- Moon Phases for Bridgeport, Connecticut, USA 2020 (Blue Moon Oct 31, 2020!)
- Computing Times of Rise, Set, and Twilight
- Sky & Telescope computation of times of rise and set - Moon (BASIC software program)
- Sky & Telescope computation of times of rise and set - Sun (BASIC software program)
- USNO Multiyear Interactive Computer Almanac 1800-2050 (MICA)
- Lunar Tables and Programs from 4000 BC to AD 8000
- Moon Phase Calendar
- What Is a Blue Moon? (second full moon in a calendar month)
- What is a Black Moon? (second new Moon in a calendar month, opposite of a "Blue Moon")
- Full Moon Names: Native American Moon Names & Folklore
- Full Corn Moon or Harvest Moon (September)
- Full Hunter's Moon or Harvest Moon (October)
- Harvest Moon in September or October?
- When is the Next Full Moon?
- How Rare is a Full Moon on Halloween? (~every 19 years)
- How Rare is a Full Moon on the Winter Solstice? (~every 19 years)
Celestial / Astronomy
- US Naval Observatory Astronomical Applications Department
- Moon Phase Simulated (US Navy) (link no longer works)
- Astronomical Information Center
- Astronomical Applications Department Software
- Astrophysics Source Code Library (ASCL) (free)
- Standards of Fundamental Astronomy
- Moon Observation Journal
- Moon Observation Journal (PDF download)
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- Moon / Planet visible positions in night sky
- Meteor Shower Calendar
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- All Alone in the Night - Time-lapse footage of the Earth as seen from the ISS
- ISS Current position
- ISS observation
- ISS Spot The Station
- Meteorological Versus Astronomical Seasons
- Second Starlink Launch Visible Passes
- Space News
- Space Debris / Satellite / etc.
- Active Satellite TLE Data and Information
- ESA's re-entry predictions
- Heavens-Above
- Rogozin - Russian space agency
- SATVIEW - Tracking satellites and Spacejunk in Real time
- Space-Track.org
- Reentries (The Aerospace Corporation)
- Space Debris - Center for Orbital and Reentry Debris Studies (CORDS) (The Aerospace Corporation)