SPACE NOWASTRONOMY
LUNAR ECLIPSE · REVISION 1

Earth's shadow nearly covers the Moon

A deep partial lunar eclipse reaches a calculated obscuration near 0.966 at global peak.

scheduled
01 · WHY IT MATTERS

The meaning behind the moment

Unlike a solar eclipse, the same broad lunar-eclipse phase is shared across Earth's entire night side.

02 · ENJOY IT FROM HOME

Drag the Moon through Earth's shadow

Compare the Moon before, during, and after it crosses Earth's shadow; the red color comes from sunlight filtered through Earth's atmosphere.

  1. Start with the physical arrangement.
  2. Notice what changes from Earth's point of view.
  3. Connect the geometry to what a person can actually experience.
A guided explanation of Drag the Moon through Earth's shadow.
Eric Bordelon · photograph
03 · FROM YOUR LOCATION

Useful without a location; richer with one

The global event and indoor experience are complete above. Add a city on This Week for a localized time and an honest easy / possible / not-visible result.

04 · IF YOU STEP OUTSIDE

No equipment required

You need the Moon above your local horizon during the eclipse. No eye protection is required for a lunar eclipse.

05 · HOW WE KNOW

Source, calculation, and revision

Last checked
2026-08-10T23:00:00+00:00
Calculation
astronomy-engine@2.1.19
Precision
exact; weather is not included
Media
Eric Bordelon · NASA Media Usage Guidelines
06 · WHAT HAPPENED AFTERWARD

We’ll keep this page current

After the event, this durable page will preserve the result, official replay, or a concise correction without silently rewriting the earlier revision.