Astronomy! Meet The Giant Exoplanet As Light As Styrofoam — Larger Than Jupiter And About 320 Light-Years From Earth

Written by Fabio Lucas Carvalho

Published on 09/01/2025 at 17:43

Updated on 09/01/2025 at 17:44

Foto: Robinson/Universidade Lehigh

Be the first to react!

Astronomy Scholars Discovered a Giant Exoplanet, Larger Than Jupiter, But Surprisingly Light, With Density Comparable to

Imagine a planet so light that its density is comparable to that of Styrofoam, so close to its star that its temperatures reach extreme levels and with an atmosphere full of exotic compounds that seem to defy the logic of astronomy.

This is the exoplanet KELT-11b, which was discovered in 2016 using the Kilodegree Extremely Little Telescope (KELT).

According to scholars in astronomy, the planet is classified as a highly inflated gas giant, belonging to the category of “Hot Jupiters“.

ARTICLE CONTINUES BELOW

Orbit and Atmospheric Conditions

The planet completes an orbit around its star in just 4.7 days, at an average distance of 0.06229 AU. This proximity results in high atmospheric temperatures, estimated at around 1,712 K (1,439 °C), which causes its atmosphere to expand remarkably.

Observations made in 2022 by the CHEOPS space telescope, from the European Space Agency (ESA), allowed for precise measurements of the planet’s radius, estimated at 181,600 km, with a margin of error under 4,300 km.

These measurements are five times more accurate than those previously made with ground-based instruments.

Atmospheric Composition

The atmosphere of KELT-11b has attracted significant attention from scientists due to its unique chemical composition and characteristics.

Spectroscopic studies conducted in 2023 identified the presence of water vapor in subsolar amounts, in addition to elements such as hydrogen cyanide (HCN) and titanium and aluminum oxides.

Furthermore, sodium was detected, reinforcing the chemical complexity of the atmosphere.

Analyses also indicate that the atmosphere of KELT-11b is predominantly cloud-free, allowing for efficient heat redistribution between the day side and the night side of the planet.

This is particularly interesting for studies of energy transfer in atmospheres of exoplanets close to their stars.

Misaligned Orbit and Spectroscopic Astronomy Studies

Another intriguing aspect is KELT-11b’s misaligned orbit relative to the equator of its star. Observations made in 2022 estimated a projection angle of -77.86 degrees, indicating that the planet has a significantly inclined trajectory.

This misalignment may offer clues about the gravitational dynamics of the planetary system and the processes involved in the formation and evolution of the planet.

Scientific Importance and Future Studies

KELT-11b is considered a natural laboratory for atmospheric characterization, especially due to its proximity to a bright star.

The planet’s low density facilitates spectroscopic analysis of its atmosphere, making it one of the best candidates for detailed studies with the next generation of space telescopes, such as the James Webb Space Telescope (JWST).

The combination of high temperature, exotic atmospheric composition, and misaligned orbit makes KELT-11b a valuable object for investigating the formation of gas giants and their interactions with their host stars.

Astronomy! Meet The Giant Exoplanet As Light As Styrofoam — Larger Than Jupiter And About 320 Light-Years From Earth

Astronomy Scholars Discovered a Giant Exoplanet, Larger Than Jupiter, But Surprisingly Light, With Density Comparable to

Orbit and Atmospheric Conditions

Atmospheric Composition

Misaligned Orbit and Spectroscopic Astronomy Studies

Scientific Importance and Future Studies

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Gaddafi built the world’s largest artificial river under the Sahara — it’s 4,000 km of giant pipes that pump 40,000-year-old fossil water to entire cities in Libya.

Discovery in Africa scares even scientists: a study published on April 23 reveals that the crust in Turkana has become so thin that it could pave the way for the continent’s division and the emergence of an ocean in the future, in a gigantic geological transformation.

A German architect built a cylindrical house in 1994 that rotates to follow the sun throughout the day, generates 5 times more energy than it consumes, and was the world’s first energy-positive house.

During works to build an artificial island in Indonesia, workers dredged 5 million cubic meters of sand from the seabed and found over 6,000 fossils from a lost continent that submerged 10,000 years ago.

A company that drilled for oil has drilled 4.8 kilometers of rock in Utah and found a never-ending heat of 290 degrees — now it is building the world’s first next-generation commercial geothermal power plant, with 100 MW connected to the grid in June 2026.

The Piper Alpha platform exploded in 1988 and killed 167 workers — the disaster that changed offshore safety forever…

Singapore, China, Germany, and Sweden already use precast concrete slabs to speed up construction and reduce waste, and now Brazil is entering the map of a method that promises almost absolute budget control and record-time key delivery.

A R$11.9 billion train that promises to revolutionize mobility in São Paulo and make trips of about 1 hour gains new progress with the inclusion of another city in the project.

The reactors of the aircraft carrier Gerald R. Ford produce 600 megawatts and could power an entire city.

As if a faucet had been opened in the ocean, warm water begins to reach Antarctica, breaks through the natural protection of the ice shelves, and intrigues scientists about the upcoming impacts on the global climate.

Astronomy! Meet The Giant Exoplanet As Light As Styrofoam — Larger Than Jupiter And About 320 Light-Years From Earth

Astronomy Scholars Discovered a Giant Exoplanet, Larger Than Jupiter, But Surprisingly Light, With Density Comparable to

Orbit and Atmospheric Conditions

Atmospheric Composition

Misaligned Orbit and Spectroscopic Astronomy Studies

Scientific Importance and Future Studies

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Gaddafi built the world’s largest artificial river under the Sahara — it’s 4,000 km of giant pipes that pump 40,000-year-old fossil water to entire cities in Libya.

Discovery in Africa scares even scientists: a study published on April 23 reveals that the crust in Turkana has become so thin that it could pave the way for the continent’s division and the emergence of an ocean in the future, in a gigantic geological transformation.

A German architect built a cylindrical house in 1994 that rotates to follow the sun throughout the day, generates 5 times more energy than it consumes, and was the world’s first energy-positive house.

During works to build an artificial island in Indonesia, workers dredged 5 million cubic meters of sand from the seabed and found over 6,000 fossils from a lost continent that submerged 10,000 years ago.

A company that drilled for oil has drilled 4.8 kilometers of rock in Utah and found a never-ending heat of 290 degrees — now it is building the world’s first next-generation commercial geothermal power plant, with 100 MW connected to the grid in June 2026.

The reactors of the aircraft carrier Gerald R. Ford produce 600 megawatts and could power an entire city.

As if a faucet had been opened in the ocean, warm water begins to reach Antarctica, breaks through the natural protection of the ice shelves, and intrigues scientists about the upcoming impacts on the global climate.

Mysterious green lights in the sky leave astronomers in search of answers

Putin and Kim Jong-un deepen military alliance that has already sent 14,000 North Korean soldiers to the war in Ukraine, and now the Russian Defense Minister travels to Pyongyang to finalize a new cooperation pact with stable bases until 2031.

The Piper Alpha platform exploded in 1988 and killed 167 workers — the disaster that changed offshore safety forever…

Singapore, China, Germany, and Sweden already use precast concrete slabs to speed up construction and reduce waste, and now Brazil is entering the map of a method that promises almost absolute budget control and record-time key delivery.

A R$11.9 billion train that promises to revolutionize mobility in São Paulo and make trips of about 1 hour gains new progress with the inclusion of another city in the project.

The reactors of the aircraft carrier Gerald R. Ford produce 600 megawatts and could power an entire city.

As if a faucet had been opened in the ocean, warm water begins to reach Antarctica, breaks through the natural protection of the ice shelves, and intrigues scientists about the upcoming impacts on the global climate.