Planets Ready to Shine on November 12
If you’ve ever wanted to glimpse the solar system’s inner workings from your own backyard, November 12 offers a prime, fleeting opportunity. As the sun sinks in the western sky, a swift Mercury will appear close to the red light of Mars along the southwestern horizon. This pairing is visible for a short window just after sunset, giving observers a chance to watch two of the solar system’s most famous neighbors in a single glance.
Where and When to Look
Begin your vigil about 20 to 30 minutes after sunset, when the sky begins to dim and the horizon still bears a warm glow. Look low on the southwestern horizon; Mercury, the innermost planet, will hug close to Mars, the brighter reddish dot. The timing can be tight—Mercury moves quickly along its orbit and fades fast as the sky darkens. Have a clear view to the horizon with minimal trees or buildings blocking your line of sight.
What You’ll See
Mercury is often a elusive sight due to its proximity to the sun, but at this event it should stand out briefly thanks to Mars’s brightness. Mars’s familiar coppery-red hue provides a distinct contrast to Mercury’s pale, yellowish light. Because both planets are far brighter than most stars, you’ll be able to spot them with the naked eye if the sky is clear. A pair of binoculars can improve the view, revealing the pair as two separate points rather than a single, unresolved glow.
Tips for a Successful Observation
- Choose a location with an unobstructed horizon to the southwest.
- Allow your eyes to adjust to the dark—this takes about 10 minutes.
- Check local weather and astronomical twilight times to plan your window accurately.
- Bring a chair or blanket; observing requires a short, patient wait near sunset.
- Use a simple star app or a sky chart to confirm Mars and Mercury’s positions as sunset approaches.
Why This Pairing Is Interesting
Mercury’s appearance next to Mars offers a rare chance to compare two very different planets in close proximity. Mercury, the smallest planet in our solar system and the one closest to the sun, contrasts with Mars’s larger, dusty surface and its historical fame as a “face of war” in human culture. The sight is a reminder of the dynamic motions within our solar neighborhood and the way the heavens reveal themselves differently at dusk.
Safety and Preparation
Unlike more dramatic celestial events like eclipses, this is a gentle, everyday observance. There’s no need for special equipment, but a steady, patient introduction to the night sky can greatly enhance the experience. Don’t expect a dramatic spectacle; instead, savor the moment of calm as two planets briefly share a common corner of the sky before Mercury slips away from the glare of the sun.
Looking Ahead
If you miss the November 12 window, don’t worry—astronomical calendars routinely offer another chance to observe inner planets as they dance through the twilight. For aspiring skywatchers, keeping a simple log of dates, times, and what you saw can make future observations easier and more rewarding.
