Image Credit: grigory_bruev/123rf.com
A new celestial phenomenon is captivating skywatchers this spring: comet C/2025 F2 (SWAN). This vibrant green comet, first observed in late March, is currently visible in the early morning sky for those located in the Northern Hemisphere.
Amateur astronomer Michael Mattiazzo initially discovered the comet using images from the SWAN camera aboard the SOHO spacecraft. Ukrainian astronomer Vladimir Bezugly also identified the comet independently. Since its discovery, astrophotographers have documented its striking appearance, characterized by an emerald glow.
The comet’s green hue is attributed to diatomic carbon being ejected from its surface. As sunlight interacts with this carbon in the comet’s coma, it produces the distinctive color. While the comet’s tail may not be particularly bright, it stretches across the sky, estimated to span about two degrees—approximately twice the width of a pinky finger held at arm’s length.
Currently on its way to perihelion, the closest point to the sun in its orbit on May 1, comet SWAN is expected to become brighter as its proximity to Earth increases. Astronomers anticipate that this may allow it to be visible to the naked eye, although predicting the behavior of comets remains challenging. Some comets may break apart as they approach the sun, making their visibility uncertain.
For those wishing to view this rare spectacle, comet SWAN can be spotted shortly before sunrise along the northeast horizon until approximately April 25. After this date, it will transition to visibility in the west-northwest horizon after sunset until around May 5. Observers in the Southern Hemisphere will have their opportunity to see the comet starting May 4.
C/2025 F2 (SWAN) has a lengthy orbital period, taking approximately 1.4 million years to complete a single orbit around the sun. Thus, for many, this may be a once-in-a-lifetime chance to witness this remarkable cosmic event.
Check out the original article here: Source link
