At a glance
- Found in
- Astronomy & Skywatching
- Related
- Planetary Transit, Transit of Mercury, Lunar Libration, Stellar Spectrum
It is a rare Venus-Sun-Earth alignment near a node.
A scientific orientation to scale, light, or motion; the article supplies the precise definition.
Understand your own relationship patterns.
Explore what you need in love and a next step for your situation. Your reading uses your own birth details.
Walk through Alex’s whole example first
The Road of AgesSee the turning points of your whole life, from your birth date
See your road's shape
Prefer to explore first?
The Road of AgesThe turning points of your whole life, from your own chart
Walk my road
Free, by email
Your daily Almanac letter
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
The story behind Transit of Venus
Eighteenth- and nineteenth-century expeditions coordinated transit observations across widely separated sites.
A one-minute story
The Wandering Stars
How the moving planets were watched, named and found, and what a transit is.
Why Transit of Venus matters
Historic timing campaigns used it to estimate the astronomical unit.
How to read Transit of Venus
Observe only by safe projection or correctly filtered front-aperture solar equipment.
Transit of Venus in practice: an example
Venus appears larger than Mercury during a solar transit because it passes closer to Earth.
Where readings of Transit of Venus go wrong
A common error is to use smoked glass, sunglasses, camera screens, or unfiltered optics; future events are separated by generations.
Sources and editorial method
Research references used for this entry include:
- NASA Science: What’s a Transit? - NASA explanation of planetary transits, light curves, and what transit measurements reveal.
- NASA Science: Eclipse Viewing Safety - Official solar-viewing guidance for eyes, cameras, binoculars, and telescopes.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Last updated
- 2026-09-26
Explore the history of Venus transits
A definition tells you what it is; your own birth chart tells you what it means for you. The Oracle casts your real chart and answers for your love, your work, and your year ahead, in conversation. It opens with the 7-day Seeker trial.
Speak with the OracleRelated terms
More in Astronomy & Skywatching
- Apparent Field of View
- Bond Albedo
- Elliptical Galaxy
- Hertzsprung-Russell Diagram
- Mean Anomaly
- Perihelion
- Red Supergiant
- Solar Photosphere
From the reference page to your own chart
Every word here
is in your own chart.
- A personal reading about love, work or purpose, written from your chart
- A practical next step to consider
- It opens with 7 days free, with the AI Oracle and daily guidance
$0 today, then $12/month after 7 days. Cancel anytime.
Common questions
What is a Transit of Venus?
A Transit of Venus is the passage of Venus’s silhouette across the Sun as viewed from Earth.
What do people get wrong about a Transit of Venus?
A common error is to use smoked glass, sunglasses, camera screens, or unfiltered optics; future events are separated by generations.
Free, by email
The Almanac, in your inbox at 7
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
