CAPE CANAVERAL, Fla. — Exciting news has emerged from a recent study that reveals a tiny, icy body beyond Pluto may have a fragile atmosphere. This atmosphere might have formed through volcanic activity or even a comet impact.
This miniature world, known as (612533) 2002 XV93, is only about 300 miles wide. Researchers believe it’s the smallest object in our solar system with a detectable atmosphere. Ko Arimatsu, the lead researcher from the National Astronomical Observatory of Japan, shared that this discovery could reshape our understanding of small celestial bodies.
Alan Stern, the lead scientist behind NASA’s New Horizons mission to Pluto, echoed Arimatsu’s thoughts, stating, “This development is extraordinary, but we need further verification.” He highlighted the significance of these findings, mentioning they could change how we look at small worlds beyond Neptune.
The research team used three telescopes in Japan to observe the object. They noticed a brief dimming of a star’s light as (612533) 2002 XV93 passed in front of it, indicating the presence of an atmosphere. Arimatsu pointed out, “Finding an atmosphere around such a small object was genuinely surprising,” challenging the belief that only larger planets and moons have atmospheres.
Located over 3.4 billion miles away, this minor planet circles the sun twice for every three orbits of Neptune. The atmosphere is estimated to be 5 million to 10 million times thinner than Earth’s, and about 50 to 100 times thinner than Pluto’s atmosphere. Likely components of this atmosphere include methane, nitrogen, or carbon monoxide, which could explain the observed dimming during the observation.
Future observations, especially with NASA’s Webb Space Telescope, could provide more clarity about this atmosphere’s composition. Arimatsu emphasized that ongoing monitoring is crucial. “If the atmosphere fades, it may suggest an impact origin. If it remains or changes seasonally, this could indicate continuous gas supply from internal ice volcanoes.”
As we look deeper into our solar system’s mysteries, studies like this inspire curiosity and wonder about distant worlds and their hidden secrets.
For more in-depth information, you can find relevant insights in Nature Astronomy.
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Planets, Astronomy, Space exploration, AP Top News, Alan Stern, Technology, Science, National Aeronautics and Space Administration, General news, Japan
