Devil’s Horns on the Sun: What Americans Should Expect from the Partial Solar Eclipse on March 29, 2025
On March 29, 2025, a partial solar eclipse will grace the skies, offering Americans a chance to witness a cosmic spectacle where the Moon takes a bite out of the Sun, leaving it with a crescent shape reminiscent of “devil’s horns.” While this won’t be a total eclipse, it’s still a striking event that’s worth catching. As an astrophysicist, I’ll break down what’s happening, when and where to watch it in the U.S., and why it’s a must-see.
What Is a Partial Solar Eclipse?
A partial solar eclipse occurs when the Moon passes between Earth and the Sun but doesn’t fully cover the solar disk. Unlike a total eclipse, where the Moon’s shadow (umbra) plunges a narrow strip of Earth into darkness, this event will only involve the penumbra—the outer, lighter shadow. From our vantage point, the Sun will appear partially obscured, forming a crescent with sharp “horns” protruding from the sides.
For the U.S., this eclipse won’t reach totality, but it will still transform the Sun into a celestial curiosity. The extent of the coverage depends on your location, with visibility decreasing the farther east you are.
When and Where to Watch in the U.S.?
The partial solar eclipse on March 29, 2025, will be visible primarily in the western United States, with the best views in Alaska and parts of the Pacific Northwest. Here’s a breakdown adjusted to local times:
Anchorage, Alaska (AKDT, UTC-8): The eclipse begins around 9:30 AM, peaks at 10:15 AM with up to 40-45% of the Sun covered, and ends by 11:00 AM.
Seattle, Washington (PDT, UTC-7): Starts at 10:00 AM, peaks at 10:40 AM with about 30-35% coverage, and wraps up by 11:20 AM.
Los Angeles, California (PDT, UTC-7): Begins around 10:15 AM, reaches a maximum of 25-30% at 10:50 AM, and ends by 11:30 AM.
Denver, Colorado (MDT, UTC-6): Starts at 11:00 AM, peaks at 11:30 AM with 20-25% coverage, and fades by noon.
Unfortunately, the eclipse won’t be visible east of a rough line from Texas to Minnesota due to the Sun’s position and timing—by the time it rises in cities like New York or Chicago, the event will have ended. The farther west you are, the better your view, with Alaska offering the most dramatic show.
To observe safely, use eclipse glasses or solar filters. Staring at the Sun unprotected can damage your retina. No glasses? Try the pinhole method: poke a small hole in a piece of cardboard and project the Sun’s image onto paper.
Why It Matters
This eclipse isn’t just a pretty sight—it’s a reminder of the precise mechanics of our solar system. The Moon’s orbit, Earth’s tilt, and the Sun’s position align in a dance governed by physics we’ve been decoding for centuries. For astrophysicists, it’s a chance to refine observations; for everyone else, it’s a moment to feel connected to the cosmos.
While the U.S. won’t see a total eclipse until August 2044, this partial event is a teaser for skywatchers. It’s also a great warm-up for the annular eclipse in 2026 visible in parts of the country.
“Devil’s Horns” or Cosmic Art?
The “devil’s horns” nickname is pure clickbait fun—there’s no mischief here, just shadows and light. Still, it’s this kind of imagery that makes astronomy thrilling. So, on March 29, 2025, grab your gear, head outside (preferably in the West), and catch the Sun sporting its eerie crescent. It might just spark a lifelong curiosity about the universe!
