Articles tagged with Exoplanets
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Astronomers have discovered a young, Jupiter-like exoplanet that provides insights into planetary origins. The Gemini Planet Imager revealed 51 Eridani b, which is still warm and luminous from its formation, with conditions that depend on whether it formed slowly or suddenly.
A team of astronomers has discovered a Jupiter-like exoplanet called 51 Eridani b, which shows the strongest methane signature ever detected on an alien planet. The new planet is the faintest exoplanet on record and provides clues about how planets formed around the sun.
Scientists have discovered a young Jupiter-like exoplanet, 51 Eridani b, with the strongest methane signature ever detected in an alien planet's atmosphere. The exoplanet is roughly twice the mass of Jupiter and offers insights into planet formation and the early stages of star development.
The newly discovered exoplanet, 51 Eridani b, is a young Jupiter-like planet with the strongest methane signature ever detected on an alien planet. Its mass and atmospheric composition suggest that it formed in a similar way to Jupiter in its infancy.
Astronomers using Gemini Observatory's new Planet Imager have probed a newly discovered world in unprecedented detail. The planet, 51 Eridani b, is about two times the mass of Jupiter and features a Solar System-like atmosphere with methane detection.
The Gemini Planet Imager has made its first exoplanet discovery, revealing a planet that may be the lowest-mass exoplanet ever directly imaged. Weighing twice as much as Jupiter, this finding provides insights into how our solar system was formed and paves the way for further research.
The team discovered a Jupiter-like planet, called 51 Eridani b, about twice the size of Jupiter and featuring the strongest methane signature ever detected on an alien planet. The discovery sheds light on how planets formed around our sun and could unlock secrets of gas giants' planetary systems.
A team of researchers has discovered a Jupiter-like planet, 51 Eridani b, within a young system that could provide new understanding of how planets formed around our sun. The planet shows the strongest methane signature ever detected on an alien planet, yielding clues about its formation.
Scientists have discovered a Jupiter-like planet in the young system 51 Eridani b, featuring the strongest atmospheric methane signal ever detected. The exoplanet's unique characteristics hint at its rapid formation process, offering insights into solar system evolution.
Astronomers confirm exoplanet orbiting far from its central star using gravitational microlensing, opening new discovery space for long-period orbits. The Uranus-sized planet is about 370 million miles from its parent star, with a host star about 70% as massive as our Sun.
Astronomers have discovered a powerful aurora on a brown dwarf, 10,000 times more powerful than any seen before. The discovery reveals a major difference in magnetic activity between low-mass stars and planets.
A new study has precisely measured the ages of 33 Kepler stars with solar-like oscillations, revealing that even stars older than 11 billion years have Earth-like planets. The research uses asteroseismology to analyze tiny variations in starlight and provides a large sample for studying galactic archeology.
A team of scientists has discovered a massive cloud of hydrogen escaping from the atmosphere of GJ436b, a Neptune-sized exoplanet located 33 light years away. This phenomenon may help explain the formation of hot and rocky 'super-earths' and potentially detect extrasolar oceans.
Astronomers have discovered a massive cloud of hydrogen, dubbed 'The Behemoth,' evaporating from a warm Neptune-sized planet orbiting a nearby star. The phenomenon may help explain the existence of Hot Super-Earths and provide insights into how planets lose their outer layers.
Researchers discover a giant cloud of hydrogen gas being burnt off from the atmosphere of GJ 436b, an exoplanet orbiting a warm red dwarf star. The cloud forms a comet-like tail as ultraviolet light pushes hydrogen into spiral motion, with 1000 metric tonnes being lost every second.
Astronomers have successfully commissioned a new type of optic that can reveal the image of an exoplanet next to its parent star. The vector-APP coronagraph uses advanced liquid crystal technology to cancel out starlight, allowing fainter planets to be imaged.
The discovery of a stratosphere on WASP-33b offers insights into the planet's composition and formation. The presence of titanium oxide in the atmosphere indicates temperature inversion, similar to Earth's ozone layer.
A team of UW graduate students has found a way to detect volcanic activity in the atmospheres of exoplanets during their transits. This could help choose worlds to study for possible life and determine if they are habitable. Volcanism regulates planetary temperatures, making it a key element in habitability.
A team of astronomers found that 74 Earth-sized exoplanets orbit their stars in circular patterns, contrary to expectations. This discovery suggests that small planets may maintain stable climates year-round, making them more hospitable to life.
Researchers discovered daily weather cycles on six exoplanets, with cloudy mornings and hot afternoons, using sensitive Kepler observations. The study found that winds transport clouds to the day side, heating them up and dissipating them, resulting in clear skies during the afternoon.
The LEECH exoplanets survey has obtained new images of HR 8799, a 30-million-year-old star with four known giant planets. The team found that the system likely consists of multiple double resonances, indicating gravitational interactions between the planets.
A team of international scientists has created a colorful catalog of reflection signatures from various Earth life forms to aid in the search for extraterrestrial life. The database features 137 diverse life forms, including extremophiles from extreme environments, which can help astronomers spot potential biosignatures on exoplanets.
Astronomers have discovered a star that is 11.2 billion years old and has at least five Earth-size planets, revealing that planetary formation occurred throughout the universe's history. The system, Kepler-444, consists of five planets with sizes between Mercury and Venus, orbiting a smaller star than our sun.
Astronomers have discovered a star with three planets only slightly larger than Earth, one of which orbits in the habitable zone where surface temperatures could be moderate enough for liquid water and life to exist. The study found that these planets are about 2.1, 1.7, and 1.5 times the size of Earth.
A study suggests that exoplanets are more likely to have liquid water and be habitable due to their rotation speed, which can create a day-night cycle. This finding challenges the traditional assumption that all exoplanets exhibit synchronous rotation, potentially increasing their ability to develop life.
The Gemini Planet Imager (GPI) has produced high-quality exoplanet images and spectra from its first year of science operations. The instrument's advanced imaging capabilities have revealed significant differences in the colors of two planets in the HR 8799 system, suggesting unique atmospheric compositions.
Astronomers have found evidence that the recipe for Earth applies to terrestrial exoplanets orbiting distant stars. The HARPS-North instrument measured the masses of small, Earth-sized worlds and found a tight relationship between mass and size, suggesting rocky compositions similar to those of Venus and Earth.
Researchers at Lomonosov Moscow State University developed a new method to estimate the magnetic field of an exoplanet. They successfully estimated the magnetic moment of the hot Jupiter HD 209458b, which is relatively small compared to Earth's magnetic field.
The European satellite Gaia is expected to detect tens of thousands of new planets within its five-year mission, revealing unique details about each planet's properties. The satellite's instruments will also capture the motion, physical characteristics, and distance of roughly 1 billion objects in the Milky Way galaxy.
Astronomers develop a new laser-based technology called the green astro-comb to detect tiny Doppler shifts, helping identify habitable zone planets. The device will enable precise measurements of exoplanet gravity, allowing for better detection of rocky worlds like Earth.
A team of scientists used the Hubble Space Telescope to create a detailed weather map of WASP-43b, tracing the planet's temperature and water vapor content. The study found that the exoplanet has winds that can reach up to 1500 degrees Celsius, with temperatures on the day side hot enough to melt iron.
A new study has shown that the water found on Earth originated before the Sun formed, suggesting that many exoplanets may also have access to abundant water. This discovery has important implications for the potential for life elsewhere in the galaxy.
Researchers have detected water vapor and hydrogen on the exoplanet HAT P-11b, a planet about four times bigger than Earth. This discovery supports astronomers' ideas about planetary formation and suggests that small planets may be rich in heavy elements like oxygen.
Physicists from UT Arlington believe following a trail of radio wave emissions may lead them to the discovery of an exomoon. They suggest using detailed calculations about the Jupiter/Io dynamic to look for radio emissions that could indicate moons orbiting an exoplanet.
A team of astronomers using NASA's Hubble Space Telescope measured water vapour in the atmospheres of three gas giants, finding levels one-tenth to one-thousandth that predicted by standard theory. This discovery raises questions about exoplanet formation and highlights challenges in searching for water on Earth-like planets.
Research by Penn State scientists has debunked the existence of two controversial planets around dwarf star Gliese 581, which were believed to be prime targets in the search for extraterrestrial life. The study confirms that signals from the stars' magnetic activity, not the planets themselves, caused the initial findings.
Researchers found that planets between 1.7 and 3.9 times the size of Earth are dubbed 'gas dwarfs' with thick atmospheres of hydrogen and helium. The study also revealed that metallicity plays a crucial role in determining planetary composition, with stars hosting gas giants containing about 50% more metals than our Sun.
A team using the Gemini Planet Imager's next-generation adaptive optics system tracked the orbit of Beta Pictoris b, a planet with an estimated mass at least four times that of Jupiter. The team refined the estimate by analyzing images and debris discs around the star.
Researchers have discovered a gas giant exoplanet, GU Psc b, located 2,000 times closer to its star than Earth is to the Sun. The planet's massive size and distance from its star make it an ideal object for studying giant exoplanets.
Astronomers from Leiden University and SRON have measured the spin of Beta Pictoris b, an exoplanet orbiting a naked-eye star 63 light-years from Earth. The planet's day length is just 8 hours, despite being over 16 times larger and 3000 times more massive than Earth.
A new study suggests that detecting life on exoplanets is more difficult than previously thought, as a lifeless planet can mimic the same results as one with a biosignature. The resolution needed to distinguish between genuine and false positives is impossible with current telescopes.
Scientists at NRL detected water vapor in the atmosphere of tau Boo b, a hot Jupiter outside our solar system. The team measured the motion of the planet to establish its presence and determined it's six times more massive than Jupiter.
Researchers have found a mysterious 'shepherd' exoplanet in the Beta Pictoris system, which suggests that the system may be capable of supporting life. The planet is believed to be about the size of Saturn and is thought to be responsible for corraling a swarm of icy comets.
Astronomers have developed a new method to gauge exoplanet pressure by detecting dimer molecules. This technique may also help identify biosignatures of life in extraterrestrial atmospheres. The discovery could be made possible with future powerful telescopes like the James Webb Space Telescope.
Scientists have made the first detection of water in the atmosphere of a hot Jupiter, tau Boötis b, using a novel technique that expands on the radial velocity method. The study confirms the presence of water vapor and also reveals the planet's mass, which was previously difficult to determine.
A team of scientists at Penn State University has detected water vapor in the atmosphere of a hot-Jupiter exoplanet, tau Boötis b. This discovery could help researchers understand how many planets like Earth exist throughout the universe and provides new insights into the formation and evolution of exotic hot-Jupiter planets.
The PLATO mission aims to discover and characterize Earth-like planets in the Sun's neighborhood. With an array of telescopes, it will measure planetary sizes, masses, and ages to determine their habitability. By observing one million stars, PLATO is expected to find thousands of new exoplanets.
Despite recent advances, reliable information about exoplanet atmospheres is scarce due to flawed methods like photometric interpretations. New techniques like spectrometry hold promise for a more comprehensive understanding of exoplanets.
Astrobiology Journal suggests Alpha Centauri B's unique tidal heating could create environments favorable to life. This finding presents a promising target for extrasolar exploration and expands our search for extraterrestrial life.
Researchers found a new giant planet in the Pisces constellation using radial velocity technique, contradicting initial assumption that only single-star systems host planets. The discovery has significant implications for understanding how extrasolar planets are formed and could lead to further discoveries in multiple-star systems.
New measurements of mass reveal that planets smaller than Neptune have low density due to extensive gas coverage, while larger ones have higher density. This suggests these planets formed quickly after their star's birth, contrasting with Earth's late formation.
The Gemini Planet Imager has captured its first light images, revolutionizing the field of exoplanet detection and study. The instrument's advanced adaptive optics system allows for direct imaging of faint planets, including those 1 million to 10 million times fainter than their host stars.
The Gemini Planet Imager has successfully captured its first light images of exoplanets, allowing scientists to study their atmospheres and characteristics in unprecedented detail. The instrument's advanced technology enables it to detect planets that are millions of times fainter than their parent stars.
Astronomers have detected clear evidence of clouds in the atmosphere of GJ 1214b, a super-Earth exoplanet, using data from the Hubble Space Telescope. The findings suggest that high-altitude clouds blanket the planet, hiding information about its composition and behavior.
Two teams of scientists used NASA's Hubble Space Telescope to detect faint water signals in the atmospheres of five distant planets. The strengths of their water signatures varied, with some planets having stronger signals than expected.
Based on Kepler data, scientists found that one in five sun-like stars has an Earth-size planet in its habitable zone. The estimated number suggests that life-supporting planets may be more common than previously thought.
Researchers at MIT have discovered an exoplanet named Kepler 78b that is approximately 1.2 times the size of Earth and has a mass about 1.7 times that of our planet. The planet's density is also similar to Earth's, suggesting it may be composed mainly of rock and iron.
A new study led by UA graduate student Johanna Teske reexamines the composition of a potentially diamond-rich exoplanet, finding it may contain less carbon than previously thought. The analysis, based on revised star observations, suggests that the 'diamond planet' could be more rocky than initially proposed.
Astronomers have confirmed that nearby double star Fomalhaut is actually a triple star system. The discovery was made using precise movements and spectroscopic measurements of astrometric data, revealing a third smaller star in the vicinity. The stars are separated by 5.5 degrees, but their gravitational pull keeps them bound together.
Astronomers have developed a new technique to measure the surface gravity of distant stars, which is crucial for calculating their physical properties and evolutionary state. The technique has been shown to be more accurate than existing methods and can significantly improve estimates of exoplanet sizes.