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Tech/Science

Atmosphere Discovered on Rocky Exoplanet 55 Cancri e

Recent breakthroughs in astronomy have unveiled a fascinating discovery – an atmosphere surrounding a rocky exoplanet, marking a significant milestone in our understanding of distant worlds. The exoplanet in question, 55 Cancri e, has been the subject of intense study due to its unique characteristics.

Located 41 light-years away, 55 Cancri e is a super-Earth, slightly larger than our own planet, but vastly different in terms of conditions. With scorching temperatures reaching 2,000 Kelvin, this lava world orbits its star in less than 18 hours, making it inhospitable to life as we know it.

Scientists have long been intrigued by 55 Cancri e, particularly due to its lack of a primordial atmosphere composed of hydrogen and helium. Instead, recent observations have revealed significant heat variations between its dayside and nightside, hinting at complex processes at play on the planet.

Astronomers utilized the James Webb Space Telescope (JWST) to delve deeper into the mysteries of 55 Cancri e’s atmosphere. By analyzing the light emitted by the exoplanet, researchers identified a thick atmosphere possibly containing carbon monoxide (CO) and carbon dioxide (CO2). This groundbreaking finding sheds light on the intricate interplay between the planet’s molten surface and its evolving atmosphere.

Renowned planetary scientist Renyu Hu from the California Institute of Technology emphasized the significance of this discovery, stating, ‘Through observation of this extrasolar example of atmosphere-magma interaction, we can better understand how the early solar system worked.’

55 Cancri e, with its outgassed atmosphere, presents a unique opportunity for astronomers to study the dynamic processes shaping rocky exoplanets. The data collected by JWST’s Near-Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI) in 2022 and 2023 have provided valuable insights into the planet’s atmospheric composition and behavior.

This groundbreaking research not only expands our knowledge of exoplanets but also offers a glimpse into the complex evolution of planetary atmospheres. As scientists continue to unravel the mysteries of distant worlds, discoveries like the atmosphere of 55 Cancri e pave the way for further exploration and understanding of the vast universe beyond our solar system.

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