A Planet of Fire: Scientists Reveal L 98-59 d with Molten Surface and Sulfur Air

A Molten Exoplanet with a Sulfur-Rich Atmosphere Beyond Our Solar System

News Desk: Astronomers have identified a fascinating exoplanet named L 98-59 d, a scorching world believed to be covered by vast oceans of molten rock. The discovery is offering scientists a rare glimpse into the extreme diversity of planets that exist beyond our solar system.

Located about 35 light-years away from Earth, L 98-59 d orbits a small red dwarf star known as L 98-59 in the southern constellation Volans. The star is significantly smaller and cooler than the Sun, yet its planetary system has drawn major interest among astronomers because of the unusual characteristics of its planets.

A Super-Earth in a Compact Planetary System

L 98-59 d belongs to a category of planets known as “super-Earths,” meaning it is larger and more massive than Earth but much smaller than gas giants like Neptune or Jupiter. The planet is estimated to be about 1.5 to 1.6 times the size of Earth and slightly more massive.

The planet is part of a tightly packed planetary system containing several known planets that orbit extremely close to their host star. Because of this proximity, L 98-59 d completes a full orbit around its star in just over seven days, far shorter than Earth’s 365-day journey around the Sun.

A World Dominated by Molten Rock

Observations suggest that L 98-59 d experiences extremely high surface temperatures. Scientists believe the heat is so intense that much of the planet’s surface may consist of a vast ocean of molten lava or magma, rather than solid rock.

Temperatures on the planet are estimated to reach well above 1,500 degrees Celsius, hot enough to keep rocks in a molten state. Such conditions likely create a dynamic environment where magma oceans, volcanic activity and intense heat dominate the planet’s geology.

Researchers say a large portion of the planet’s interior may remain molten, making it very different from Earth-like rocky worlds.

A Sulfur-Rich and Hostile Atmosphere

Another remarkable feature of L 98-59 d is its thick atmosphere rich in sulfur-based gases. These gases, which can include compounds such as hydrogen sulfide, could create a dense and toxic environment surrounding the planet.

Scientists believe the atmosphere may trap heat through a powerful greenhouse effect, preventing the planet from cooling and maintaining its molten surface over extremely long periods.

The combination of intense heat, molten rock and toxic atmospheric gases makes the planet one of the most hostile environments ever identified outside the solar system.

A New Class of Extreme Planet

Astronomers believe L 98-59 d could represent a new category of planetary worlds that do not fit neatly into existing classifications such as rocky Earth-like planets or gas giants.

These magma-dominated planets may have formed under unique conditions around smaller stars, and studying them could help scientists understand how planets evolve in extreme environments.

Expanding the Search for Alien Worlds

The discovery also highlights the growing capabilities of modern astronomical instruments and space telescopes that allow scientists to analyze distant planets in remarkable detail.

Although L 98-59 d is far too hot and hostile to support life as we know it, studying such exotic worlds helps researchers better understand how planetary systems form, how atmospheres evolve and how diverse the universe truly is.

Astronomers believe continued observations of the L 98-59 system could reveal even more about these unusual planets and possibly uncover additional worlds orbiting the same star.