New telescope images of the interstellar comet 3I/ATLAS confirm that the mysterious object has gotten brighter and greener since its close approach to the sun in late october. This increase in activity could portend new, bright outbursts of cometary material as 3I/ATLAS careens toward its closest encounter with Earth next week.
Taken on Nov. 26 with the Gemini North telescope atop Hawaii’s dormant Mauna Kea volcano,the new images capture the comet in one of its most active phases yet. Recently heated by intense solar radiation, ice on the comet is sublimating and spewing into space along with tons of dust, forming a bright, cloudy atmosphere (a coma) around the comet’s main body and a long, glowing tail behind it.
To capture this view, the team observed 3I/ATLAS using four filters (blue, red, orange and green), and found that gas in the comet’s coma now emits a faint greenish hue, which wasn’t the case several months ago.
Why is 3I/ATLAS going green?
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Comet 3I/ATLAS: What You Need to Know
Get ready. A new comet,3I/ATLAS,is currently making its way toward Earth,and it has the potential to become a stunning sight. unlike some comets that fizzle out, this one is predicted to be remarkably bright – possibly even visible to the naked eye.Here’s what you should know.
What is Comet 3I/ATLAS?
Comet 3I/ATLAS was discovered in early 2023 by the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescopes in Hawaii. That’s where the “ATLAS” part of the name comes from. The “3I” signifies it’s the third interstellar comet discovered. That means it didn’t originate from our solar system; it came from somewhere else in the galaxy. This is relatively rare, making 3I/ATLAS particularly engaging to astronomers.
When and Where to See It
The comet is currently brightening as it approaches the sun. Its closest approach to the sun (perihelion) will be on September 27, 2024. Though,the best viewing opportunities for those in the Northern Hemisphere will be in late September and early October 2024.It will pass closest to Earth on October 12, 2024.
Look towards the constellation Perseus. You’ll want a dark sky, away from city lights, for the best chance of spotting it. Binoculars will likely enhance the view, but if predictions hold true, you might see it with just your eyes. Keep in mind that comet visibility is notoriously challenging to predict, so don’t be discouraged if it’s fainter than expected.
Why is This Comet Special?
Several factors make 3I/ATLAS stand out. First, its interstellar origin is fascinating. Studying its composition can give us clues about planetary systems around other stars. Second, it’s unusually rich in carbon dioxide.This is different from most comets we’ve observed, which are typically dominated by water ice.
This high carbon dioxide content means it might exhibit a unique behavior as it approaches the sun. Instead of a typical, gradual brightening, it could experience sudden outbursts of gas and dust.Astronomers are closely monitoring it to see how it evolves. there’s even a small chance it could fragment as it gets closer to the sun, creating an even more dramatic display.
How to Track the comet
Want to stay updated on the comet’s progress? Several websites provide tracking facts and observing guides:
These resources will give you the latest information on its position,brightness,and any potential observing challenges. Don’t miss this chance to witness a visitor from another star system!