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Unprecedented discovery in astronomical theories

Fundamental Astronomy

By Md Rafiqul HasanPublished 7 months ago 3 min read
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Unprecedented discovery in astronomical theories
Photo by Shot by Cerqueira on Unsplash

Freshly released images from the James Webb Space Telescope have brought to light unexpected pairs of planet-like entities in the Orion Nebula that have hitherto remained undetected. The Orion Nebula, a luminous cloud of gas and dust, is one of the most radiant nebulae in the night sky and is identifiable as the sword in the Orion constellation. Located at a distance of 1,300 light-years from Earth, the nebula has long been a source of fascination for astronomers, who have studied a plethora of celestial objects within it, including planet-forming disks around young stars and brown dwarfs, which are objects with a mass between that of planets and stars.

Astronomers employed Webb's near-infrared camera, known as NIRCam, to capture mosaics of the Orion Nebula in both short and long wavelengths of light, thereby revealing unprecedented details and unexpected discoveries.

Upon scrutinizing the short-wavelength image of the Orion Nebula, astronomers Samuel G. Pearson and Mark J. McCaughrean focused on the Trapezium Cluster, a young star-forming region that is approximately one million years old and teeming with thousands of nascent stars. In addition to the stars, the researchers detected brown dwarfs, which are too small to initiate nuclear fusion at their cores and become stars. Brown dwarfs have a mass that is less than 7% of the mass of the sun.

While searching for other low-mass isolated objects, the astronomers stumbled upon something that had never been observed before: pairs of planet-like entities with masses ranging from 0.6 to 13 times the mass of Jupiter that appear to challenge some fundamental astronomical theories.

The scientists have designated them as Jupiter Mass Binary Objects, or JuMBOs. Pearson, a European Space Agency research fellow at the European Space Research and Technology Centre in the Netherlands, stated that "although some of them are more massive than the planet Jupiter, they will be roughly the same size and only slightly larger."

The astronomers have discovered 40 pairs of JuMBOs and two triple systems, all of which are on wide orbits around each other. Despite existing in pairs, the objects are typically separated by approximately 200 astronomical units, or 200 times the distance between Earth and the sun. It can take between 20,000 and 80,000 years for the objects to complete an orbit around each other.

Pearson explained that the objects' temperatures range from 1,000 degrees Fahrenheit (537 degrees Celsius) to 2,300 F (1,260 C). The gaseous objects are young, astronomically speaking, at approximately 1 million years old. In comparison, our solar system is 4.57 billion years old.

McCaughrean, senior adviser for science and exploration at the European Space Agency, stated that "we are halfway through the life of the sun, so these objects in Orion are 3-day-old babies. They're still quite luminous and warm because the energy they have when they get created still allows them to glow, which is how we can see these things in the first place."

McCaughrean and Pearson have authored two research papers based on their discoveries in the Orion Nebula using the Webb telescope. The studies have been submitted to academic journals for publication, and the preliminary findings are available on a preprint site called arXiv. However, many questions about JuMBOs remain, including how they came to exist in the first place.

Stars are formed through the gravitational collapse of massive clouds of gas and dust. This process gives rise to disks of gas and dust that orbit the stars, eventually leading to the formation of planets. However, the formation of JuMBOs (super low mass objects) in the Orion Nebula remains unexplained by current theories. Dr. McCaughrean acknowledges that some may compare JuMBOs to rogue planets, which are planetary-mass objects that wander freely in space without orbiting stars. However, it is difficult to explain how pairs of JuMBOs could be ejected from orbiting stars simultaneously while remaining gravitationally connected to each other

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Md Rafiqul Hasan

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  • StoryholicFinds7 months ago

    love it ❤️

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