2027 Meteor Shower Calendar: Dates, Peak Nights & Best Viewing Conditions 2027 brings twelve major meteor showers to the night sky, from the sharp Quadrantids peak on January 3–4 (ZHR 80–120) to a quiet, moon-free close with the Ursids on…

If you’ve ever wondered exactly how close the Moon has to be before it counts as a supermoon, you’re not alone. Plenty of sites quote a fixed number like 366,000 km, but that’s only an approximation. The real definition compares…

Why Do Eclipses Repeat Every 18 Years? The Saros Cycle Explained Every eclipse belongs to a family. Roughly 18 years, 11 days, and 8 hours after a solar or lunar eclipse, a near-twin occurs — same node, similar geometry, similar…

Where the Moon Is in Its Apsidal and Nodal Precession Cycles The Moon’s orbit doesn’t hold still. Its long axis swings around once every 8.85 years, and the plane it orbits in swings around once every 18.6 years. Here’s how…

Artemis III: NASA’s Orbital Proving Ground Before the Real Landing Artemis III no longer lands on the Moon. Since February 2026, it’s a crewed test flight in Earth orbit built to rehearse docking with two commercial landers before Artemis IV…

Quick Answer Not in any way that matters for prediction. The Moon’s gravity creates small, measurable stress on the Earth’s crust, but decades of statistical analysis — including a review of over 200 magnitude 8+ earthquakes dating back to the…

Telescope Setup Checklist for Moon Viewing Before you point your telescope at the Moon, run through this quick pre-session checklist — covering cooldown time, collimation, and the gear that makes lunar detail actually visible. Pre-Session Checklist Telescope Prep & Acclimation…