32 Real Alien Planets You Won't Believe Exist

Distant from the eight well-known planets in our solar system lie numerous strange and extreme worlds waiting to be discovered—some of which have already been identified.

Due to the swift advancement in telescope technology, astronomers have identified over 5,600 exoplanets beyond our solar system. exoplanets As scientists refer to them, these planets include worlds made entirely of molten rock and others covered completely with water. Some are being scorched by the intense radiation from their parent stars, while others remain shrouded in everlasting darkness. Among them are planetary bodies reminiscent of those seen in “Star Wars,” along with celestial spheres potentially harboring alien organisms beyond our wildest imaginations.

Come with us as we explore some of the weirdest and most intriguing exoplanets in our surprisingly varied cosmos.

The "inferno world" where molten rock showers down.

55 Cancri e is a terrestrial planet approximately eight times larger than Earth, categorizing it as a "super Earth." Although its dimensions are impressive, the environment does not offer anything favorable for life. Frequently referred to as the "planet from hell," 55 Cancri e is entirely enveloped by rivers of molten rock, and it might also rain lava It is also situated there. The exoplanet lies 41 light-years away from Earth, which makes it a favored subject for research (though not ideal for vacations).

Related: 38 Stunning Images from the James Webb Space Telescope

The ocean-filled planet with (possibly) habitable seas

K2-18 b is an expansive planet situated approximately 120 light-years away from our Sun. This celestial body resides within what scientists call the "habitable zone," indicating that conditions might be just right for liquid water—and possibly even life—to exist there. New observations using the James Webb Space Telescope (JWST) suggest evidence supporting the presence of a potential liquid water ocean on this exoplanet. could potentially harbor living organisms In this research, JWST identified potential signs of dimethyl sulfide—a substance exclusively released by phytoplankton on our planet—in the atmosphere of an exoplanet.

The real-world "Tatooine"

Luke Skywalker would find himself quite comfortable here. Kepler-16b This exoplanet holds the distinction of being the first discovered circumbinary world—a celestial body orbiting two stars simultaneously akin to Tatooine in the Star Wars series. Despite its similarities with Saturn’s gas giant appearance, even a skilled Jedi might struggle to find stable ground on this distant orb situated roughly 200 light-years away from our Sun.

The rule-breaking behemoth

The giant exoplanet LHS 3154b leaves scientists puzzled due to its considerable size relative to its small star. The planet has approximately 13 times the mass of Earth yet revolves around a star that is nine times smaller. less massive More luminous than the sun, this seems implausible according to scientists who first encountered it in 2023. Further investigations into this 'unthinkable' celestial body might challenge our current understanding of how planets come to be formed.

What is the biggest exoplanet discovered so far in our universe?

With a diameter two times larger than Jupiter’s, the exoplanet HAT-P-67 b could potentially be the biggest identified planet in existence , in terms of width. However, even with its massive size, there are more massive There are worlds beyond our own. This massive planet, situated roughly 1,200 light-years away from us, boasts an extremely low density, making it just one-third as heavy as Jupiter.

The "fluffy" planet where it hails sand.

Situated 200 light-years away from our planet, the exoplanet WASP-107b exhibits an exceptionally low density, causing it to seem quite "puffy" when observed through telescopes. Recently, Webb Space Telescope investigation of the planet revealed clouds potentially made of fine-grained silicate particles, meaning it may literally rain sand on this puffed-up world.

The planet referred to as the "eyeball world" featuring possible living oceans.

Positioned merely 50 light-years away from our planet, the slitted-eyed distant planet LHS 1140 b It could potentially harbor alien life due to its distinctive surface features. Researchers examining the planet using the James Webb Space Telescope discovered evidence suggesting that much of the planet might be encased in ice—except for an area always facing its parent star. This region’s constant exposure to stellar radiation might cause sufficient melting to create a round, liquid-water ocean, as per their findings. The unusual pattern resulting from this phenomenon gives the planet a target-like look. Moreover, scientists believe that this uncommon body of water could serve as an ideal environment for extraterrestrial organisms to thrive, based on their report.

The rotten-egg world

The exoplanet HD 189733 b Located approximately 64 light-years away from our planet, this celestial body boasts an exceptionally distinctive chemical makeup, making it almost possible for astronomers to sense its presence even from vast intergalactic distances. According to new research conducted with the James Webb Space Telescope (JWST), the atmosphere of this world includes substantial quantities of hydrogen sulfide—a poisonous and combustible substance associated with decomposing biological materials and volcanic activity here on Earth—known for its unpleasant odor reminiscent of spoiled eggs. Despite being excessively heated, rendering conditions inhospitable for living organisms (which we're thankful for), discovering these specific compounds within its air suggests promising potential; indicating that the JWST might soon have the capability to identify signs of extraterrestrial life throughout various parts of the cosmos.

The potential non-existence of the "Vulcan planet"

In an extraordinary instance where science fiction mirrors reality, researchers announced finding a planet akin to Vulcan—the birthplace of Mr. Spock from the Star Trek universe. This celestial body was identified back in 2018 orbiting the actual star known as 40 Eridani A—precisely the star that supports Spock’s fictional homeworld within the renowned sci-fi saga. Nonetheless, recent follow-up observations Some observations of the star have cast doubts on the planet's existence; slight fluctuations in the star’s luminosity might be due to recurrent outbursts on the stellar surface instead of gravitational effects from an orbiting body. Consequently, the validity of the Vulcan planet, known as HD 26965 b, appears questionable.

A world similar to Earth orbiting a tiny, reddish star

The Earth might have had a previously undetected twin within a neighboring star system. Called Gliese 12 b The planet revolves around a small, red-hot star located approximately 40 light-years away from us. Interestingly, this exoplanet has a diameter only slightly larger than Earth’s, making it quite comparable to our world. Despite orbiting its parent star at a closer distance—completing one revolution every 13 Earth days—the star itself is considerably smaller. This positioning places the exoplanet within the habitable zone, allowing for the potential presence of liquid water on its surface. Consequently, this far-off cousin might even host some form of extraterrestrial life.

A planet of Earth's size that experiences perpetual darkness

Not every Earth-sized planet is fortunate enough to be inhabitable. Consider SPECULOOS-3 b, an earthlike, rocky planet The orbit of this rocky world around its red dwarf star is perilously tight. It completes a full revolution in just 17 hours, subjecting itself to such intense radiation that most of its atmosphere may have been stripped away ages ago, rendering the planet completely uninhabitable. While these extreme conditions are not uniform across the entire globe, they do vary significantly due to tidal locking—where one hemisphere perpetually experiences daylight and the opposite side endures constant darkness.

The crimson volcanic planet that's "dissolving from inside"

Astronomers have identified a planet within a far-off stellar system where volcanic eruptions seem to occur incessantly, causing the entire globe to emit a reddish glow observable via telescopes. smoldering exoplanet, named TOI-6713.01 The exoplanet lies approximately 66 light-years away from our planet and circles close to its parent star, finishing one orbit in just about 2.2 Earth days. Evidence indicates that the surface of this celestial body might be engulfed in flowing lava due to numerous ongoing volcanic activities. Additionally, intense heat generated internally through gravitational interactions with both its nearby stars and adjacent planets could contribute to melting processes occurring deep inside the planet.

The gaseous planet characterized by winds as swift as bullets

Researchers have charted the climate of a massive exoplanet located about 280 light-years away from our planet, and the conditions appear quite harsh. The planet, named WASP-43b is tidally locked, showing only one side constantly towards its star while the opposite side remains shrouded in perpetual night. These extreme conditions create substantial thermal variations, resulting in powerful gusts of wind that researchers have calculated could reach speeds of approximately 5,600 mph (9,000 km/h), far surpassing the velocity of a rifle projectile.

The nightmarish realm adorned with brilliant rainbows

The exoplanet WASP-76 b Located approximately 637 light-years away from our planet, this location isn’t exactly what you’d call a dream getaway. The exoplanet circles its parent star at an astonishingly close distance, roughly twenty times nearer than Mercury’s orbit around the Sun. This proximity scorches the planet’s daylight side with temperatures soaring to about 4,350 degrees Fahrenheit (or 2,400 degrees Celsius), rendering it akin to a celestial inferno. Despite these harsh conditions, there remains something intriguing—a peculiar glowing area visible along the boundary between the daytime and nighttime portions of the globe. Scientists speculate that this might be a “glory,” a spectacular optical effect similar to rainbows but appearing as concentric colored bands encircling a larger diameter, which can occasionally be witnessed here on Earth.

The massive planets circling deceased stars

One day, the sun will perish—but certain planets within our solar system might endure. Researchers reached this conclusion after identifying two massive planets circling "lifeless" white dwarf stars in far-off stellar systems. WD 1202-232 and WD 2105-82 The planets are believed to have masses ranging from one to seven times that of Jupiter, and they both circle tiny, inactive stars at distances exceeding 11.5 astronomical units (AU) away. If their detection is verified, this could suggest that our own Solar System’s similar planets—Jupiter and Saturn—might endure even after the Sun meets its ultimate demise. Unfortunately for us, Earth will not share such a fate. likely to get consumed During our sun's ultimate expansion. )

The "nomad" planets of Orion

The most recognized planets circle stars; however, numerous others might not do so. Researchers employing the JWST have identified countless freely drifting "nomad planets" Sailing through the Orion Nebula without being anchored to any star, an unusual phenomenon has been observed: approximately 80 of these wandering planetary bodies are locked into mutual orbital pairs, twirling through space together. Researchers remain puzzled regarding both the mechanism behind their expulsion from their original stellar nurseries and the reason for their paired orbits. Considering that these celestial entities possess masses similar to Jupiter’s, astronomers have coined the term Jupiter-mass Binary Objects—JuMBOs for brevity—to describe them.

The far-off world that we can genuinely observe

Scientists typically discover most exoplanets indirectly by observing variations in the light from far-off stars. However, in 2004, researchers managed to visual evidence of an extraterrestrial planet For the very first time, astronomers identified an object known as 2M1207b. This exoplanet resides approximately 170 light-years from Earth within the constellation Centaurus. It stands out as a gaseous behemoth with a mass around five times greater than that of Jupiter. Researchers were able to detect this far-off celestial body by observing it across three distinct infrared wavelengths. These observations allowed them to capture the thermal emissions of the planet while effectively masking the glare emitted by its parent star. Following this landmark observation, scientists have since directly imaged nearly 200 additional exoplanets. Meanwhile, over 5,000 other planets beyond our solar system have come to light via alternative detection methods.

The planet featuring clouds made of quartz

Could you picture a sunset viewed through a crystalline sky? This might be what could actually happen on theصند exoplanet WASP-17b A Jupiter-like gas giant, where the scorching conditions cause clouds composed of quartz crystals, as suggested by JWST observations. The planet has an orbit incredibly near to its parent star, resulting in atmospheric temperatures soaring up to a searing 2,700°F (1,500°C). At these extreme heats, minuscule grains similar in size to beach sand form within the atmosphere; these could potentially aggregate into clouds consisting purely of quartz, according to investigators.

The baby Jupiter about to be born

Scientists hunting for exoplanets focus their efforts not only on finding current planets but also universes that are about to come into existence While examining the area surrounding the star V960 Mon, which lies approximately 5,000 light-years away from us, astronomers detected a gaseous expanse with irregularities. Two streams of matter appear to be converging into well-defined, planetary formations within this space. The research team, utilizing observations from both the European Southern Observatory’s Very Large Telescope and the Atacama Large Millimeter/submillimeter Array, reported their findings. This marks the initial observation of such an early stage in a stellar system poised for the formation of its inaugural set of large planets.

The brother planets moving in unison

Orbiting the far-off star PDS 70, which lies 370 light-years away from our planet, exists a remarkably uncommon duo of brother-sister planets A well-defined world comparable in size to Jupiter appears to circle its parent star, trailed closely by a massive cloud of gas and debris that scientists believe might be an immature companion to the planet. While just one object shows all the signs of being a complete planet, this duo represents the initial proof of so-called "Trojan planets." These are pairs of celestial bodies thought to have originated almost simultaneously and in close proximity around their common star, sharing identical orbits.

The planet spinning around its star forms a spiral galaxy pattern.

Approximately 500 million light-years away from our planet lies a star system that appears strikingly similar to something we might recognize. Enveloped by two worn spiral arms It mirrors our very own Milky Way galaxy—but on an immensely smaller scale. This star’s galactic-like structure can largely be attributed to what astronomers believe might be a concealed, Jupiter-sized planet known as MWC 758 c. This planet allegedly manipulates the star’s cloud of dust through its immense gravity, forming impressive spiral patterns. While the existence of this planet hasn’t been definitively established yet, computer models suggest it could indeed be responsible for giving its host star such an unusual appearance.

The mirror world that shouldn't exist

Many planets reflect at least some of their parent star's light. However, the exoplanet LTT9779 b boasts an astounding 80% reflectivity from the light emitted by its parent star—the highest reflective property observed in any known exoplanet. This remarkable brightness is attributed to a thick layer of metallic clouds enveloping the entire planet. Researchers believe this Neptunian-sized celestial body has an atmosphere predominantly composed of silica, essentially glass-like particles, along with titanates, salts rich in titanium, effectively transforming the planetary surface into something akin to a giant mirror. However, the very presence of this planet presents a conundrum for astronomers: Given how close it orbits around its sun, one would expect such proximity to result in atmospheric erosion due to intense stellar winds. Yet, what seems crucial here might just be these metals within the cloud layers; their weight could make them resilient against being stripped off by those same powerful cosmic breezes.

The "zombie" planet that outlived its star's demise

The exoplanet 8 Ursae Minoris b
Also referred to as Halla, this exoplanet is a large gas giant similar to Jupiter, situated approximately 520 light-years away from our planet. Astronomers believe that due to its proximity to its host star, which has advanced to the red giant stage, the enormous planet ought to have been entirely vaporized. This stellar evolution would typically engulf nearby celestial bodies with intense heat during its expansionary period before contracting back down.
However, observations indicate that Halla continues to orbit near what seems like an unusually stable point relative to such extreme conditions. It’s possible that this world formed well after the initial swelling and subsequent contraction of its parent star occurred. Alternatively, the present-day star might actually be the result of two previously separate suns merging together—a cosmic event that could potentially alter standard evolutionary trajectories enough for planets at closer distances to survive where they otherwise wouldn’t.

The water world with a steam atmosphere

The exoplanet GJ 1214b It is situated merely 40 light-years away from our planet, yet it is concealed beneath dense layers of cloud cover, making it challenging for researchers to examine until recently. By leveraging the James Webb Space Telescope’s ability to see in infrared wavelengths, experts were able to penetrate these atmospheric veils. They then scrutinized the celestial body and detected indications of a gaseous envelope composed primarily of vapor, which implies that substantial quantities of liquid might be present underneath its cloudy exterior.

The earthlike planet lacking an atmosphere

Orbiting the remote star TRAPPIST-1, there are seven terrestrial, Earth-sized planets circulating within its habitable zone. Astronomers are keenly exploring whether these planets might have environments suitable for life. Among them, TRAPPIST-1b It might no longer be under consideration. The JWST’s examination of the rocky, Earth-like planet shows that it is extremely hot—about 450°F (232°C)—and most likely lacks an atmosphere entirely. While some of this blazing-hot planet's neighboring worlds could potentially offer conditions suitable for life, further investigation will be necessary to confirm whether they truly do so.

The extraterrestrial sandstorm planet

Scientists using JWST have spotted a gargantuan sandstorm raging on the exoplanet VHS 1256 b Situated approximately 40 light-years away from our planet, this massive celestial body orbits at an immense distance from its star, taking around 10,000 years for one full revolution. Due to its considerable separation, astronomers have been able to observe the exoplanet’s atmosphere with relative clarity, free from excessive interference caused by stellar radiation. New findings reveal extremely heated clusters composed of silicate grains circulating within the planetary atmosphere. Researchers suggest these could indicate the presence of a colossal atmospheric disturbance akin to a dust storm.

A world hotter than a celestial body.

KELT-9b Located 670 light-years away from our planet, KELT-9b is an exceptionally scorching gas giant akin to Jupiter. It boasts a staggering surface temperature of approximately 7,800°F (4,300°C). Upon discovery, scientists recognized it as the most blisteringly hot known exoplanet—so searingly hot that it surpasses the temperatures found on certain stars. The extreme heat wreaks havoc on its environment; at any moment, half of KELT-9b’s atmosphere could be evaporating under the relentless stellar radiation. Such conditions make KELT-9b not exactly your top pick for interstellar travel destinations.

The toxic football planet

Situated roughly 900 light-years away from our planet, the exoplanet WASP-121b It is extremely hot, causing heavy metals like iron and magnesium to continuously vaporize within its atmosphere before escaping into outer space. Researchers observed these metal particles at such elevated altitudes above the planetary surface that their gravitational attraction was too weak to retain them, allowing them to float off. This intense warmth originates from the planet’s very tight orbit around its central star. Indeed, due to this proximate orbit, the gravitational influence of the star has elongated the planet into an oblong form, setting it apart from the typically round exoplanets usually found.

The incredibly tiny realm racing at lightning pace

Situated 35 light-years away from our planet, L 98-59b It ranks among the least massive exoplanets known, having only 0.4 times Earth’s mass. This minuscule celestial body zips swiftly around its parent star, finishing an orbit in merely two days and six hours. Due to this rapid movement and proximity to its star, it absorbs approximately 22 times more stellar radiation than our planet gets from the Sun, which most likely makes this small, swift orb uninhabitable.

Earth's "older cousin"

The exoplanet Kepler-452 b is strikingly alike to our home planet that NASA refers to this world as "Earth’s elder sibling.” This rocky exoplanet circles a Sun-like star at almost exactly the same orbital radius as Earth does around the Sun, making one orbit every approximately 385 days. Consequently, it resides within what scientists call the habitable zone, suggesting conditions might allow for liquid water on its surface. However, despite these similarities, we must accept that this distant relative remains unreachable; positioned roughly 1,800 light-years away, even traveling aboard future spacecrafts, reaching it would require an estimated timeframe of over 30 million years.

The eerily similar neighboring planets

The exoplanet Kepler-36b Is a terrestrial planet approximately 1.5 times larger than Earth, orbiting remarkably near to its celestial neighbor—a Neptune-like exoplanet named Kepler-36c. Every 97 days, these distant siblings come extraordinarily close to one another, with their closest approach being less than five times the distance between the Earth and the Moon. During these tight conjunctions, they experience immense gravitational tugs from each other, which might trigger intense volcanic activity on the rocky body known as Kepler-36b.

The unfortunate planet orbiting a young star

The exoplanet AU Microscopii b Located approximately 32 light-years away from our planet, AU Microscopii b finds itself distressingly close to its parent star at merely six million miles (nine point six million kilometers). This youthful, scorching red dwarf is incredibly volatile for being only around 23 million years old—a veritable infant in astronomical scales—while our Sun has existed for roughly 4.6 billion years. The immature star frequently experiences eruptions releasing bursts of radiation that are tens of thousands of times more intense than even the most powerful solar flares emitted by the Sun; unfortunately, AU Microscopii b often bears the brunt of these violent events. Scientists observing this phenomenon have detected large chunks of matter circulating nearby the exoplanet, indicating that the unstable star might be stripping off portions of the planet’s atmospheric envelope gradually over time.