Recently in the Extrasolar Planets Category


An international team of astronomers including Gisela Ortiz-Leon from the Max Planck Institute for Radio Astronomy (MPIfR) in Bonn discovered a Saturn-like planet orbiting a small, cool star by detecting the "wobble" in the star's motion caused by the gravitational pull of the planet.

The European Southern Observatory's Very Large Telescope (ESO's VLT) has taken the first ever image of a young, Sun-like star accompanied by two giant exoplanets.

Several interacting exoplanets have already been spotted by satellites. But a new breakthrough has been achieved with, for the first time, the detection directly from the ground of an extrasolar system of this type.

Measurements from NASA's Transiting Exoplanet Survey Satellite (TESS) have enabled astronomers to greatly improve their understanding of the bizarre environment of KELT-9 b, one of the hottest planets known.

The Vega planetary system hosts the archetype of extrasolar Kuiper belts, and is rich in dust from the sub-au region out to 100's of au, suggesting intense dynamical activity.

About the size of a briefcase, the CubeSat was built to test new technologies but exceeded expectations by spotting a planet outside our solar system.

An international team of researchers, led by astronomers from the University of Amsterdam (the Netherlands), has directly demonstrated the presence of iron in the atmosphere of an exoplanet for the first time.

Our solar system has a king. The planet Jupiter, named for the most powerful god in the Greek pantheon, has bossed around the other planets through its gravitational influence.

Now you see it, now you don't.

A New Way To Study Exoplanets

A team of scientists using the Low Frequency Array (LOFAR) radio telescope in the Netherlands has observed radio waves that carry the distinct signatures of aurorae, caused by the interaction between a star's magnetic field and a planet in orbit around it.

Distant Worlds Under Many Suns

Is Earth the only habitable planet in the universe or are there more worlds somewhere out there that are capable of supporting life?

Exoplanet 51 Eridani b Directly imaged

An updated visual orbit of the directly-imaged exoplanet 51 Eridani b and prospects for a dynamical mass measurement with Gaia

Astronomers have discovered a planet three times the mass of Jupiter that travels on a long, egg-shaped path around its star.

A new study using data from NASA's Spitzer Space Telescope provides a rare glimpse of conditions on the surface of a rocky planet orbiting a star beyond the Sun.

A team of astronomers led by Anne-Marie Lagrange, a CNRS researcher at the Institut de Planétologie et d'Astrophysique de Grenoble (CNRS/Université Grenoble Alpes) (1), has discovered a second giant planet in orbit around β Pictoris, a star that is relatively young (23 million years old) and close (63.4 light years), and surrounded by a disk of dust.

Astronomers are planning to hunt for cores of exoplanets around white dwarf stars by 'tuning in' to the radio waves that they emit.

Researchers at Dartmouth College have discovered a planet orbiting one of the brightest young stars known, according to a study published in the journal The Astrophysical Journal Letters.

Gas-giant planets orbiting close to other stars have powerful magnetic fields, many times stronger than our own Jupiter, according to a new study by a team of astrophysicists.

The Gemini Planet Imager (GPI), a dedicated planet-finding instrument at the Gemini South telescope in Chile, is concluding a 4-year survey - the GPI Exoplanet Survey (GPIES) - of 531 young, nearby stars searching for giant planets.

In the past three decades, almost 4,000 planet-like objects have been discovered orbiting isolated stars outside the Solar System (exoplanets).

Brown dwarfs fill the "gap" between stars and the much smaller planets - two very different types of astronomical objects.

Astronomers who study stars are providing a valuable assist to the planet-hunting astronomers pursuing the primary objective of NASA's new TESS mission.

We provide 28 new planet candidates that have been vetted by citizen scientists and expert astronomers.

NASA's Kepler space telescope may be retired, but the discoveries continue to rack up for this historic planet-hunting mission.

Helium Exoplanet Inflated Like a Balloon

Astronomers have discovered a distant planet with an abundance of helium in its atmosphere, which has swollen to resemble an inflated balloon.

An international team including five Carnegie astronomers has discovered a frozen Super-Earth orbiting Barnard's star, the closest single star to our own Sun.

Meticulous analysis of hundreds of photographic plates from the star J1407 between 1890 and 2007 show no stellar eclipses.

The Stuff That Planets Are Made Of

Is there a second Earth out there in space? Our knowledge of planetary systems far, far away is increasing constantly, as new technologies continue to sharpen our gaze into space.

In this study, we investigated the differences between four commonly-used exoplanet catalogs (exoplanet.eu; exoplanetarchive.ipac.caltech.edu; openexoplanetcatalogue.com; exoplanets.org) using a Kolmogorov-Smirnov (KS) test.

Exoplanets, planets in other solar systems, can orbit very close to their host star.

Imagine a place where the weather forecast is always the same: scorching temperatures, relentlessly sunny, and with absolutely zero chance of rain.

Forty-four planets in solar systems beyond our own have been unveiled in one go, dwarfing the usual number of confirmations from extrasolar surveys, which is typically a dozen or less.

Scientists at MIT and elsewhere have analyzed data from K2, the follow-up mission to NASA's Kepler Space Telescope, and have discovered a trove of possible exoplanets amid some 50,000 stars.

Construction of the space telescope CHEOPS is finished. The engineers from the Center for Space and Habitability (CSH) at the University of Bern will package the instrument this week and send it to Madrid, where it will be integrated on the satellite platform.

Transiting Exoplanet Survey Satellite is undergoing final preparations for its April 16 launch to find undiscovered worlds around nearby stars, providing targets where future studies will assess their capacity to harbor life.

A hot, metallic, Earth-sized planet with a density similar to Mercury - situated 339 million light years away -- has been detected and characterised by a global team of astronomers, including the University of Warwick.

Since astronomers first measured the size of an extrasolar planet 17 years ago, they have struggled to answer the question: how did the largest planets get to be so large?

Beneath an elegant office building with a Spanish-style red tiled roof in Pasadena, California, three timeworn storerooms safeguard more than a century of astronomy.

We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source-lens baseline object.

An Inferno World With Titanium Skies

A team of astronomers led by Elyar Sedaghati, an ESO fellow and recent graduate of TU Berlin, has examined the atmosphere of the exoplanet [WASP-19b] in greater detail than ever before.

New work from a team of Carnegie scientists (and one Carnegie alumnus) asked whether any gas giant planets could potentially orbit TRAPPIST-1 at distances greater than that of the star's seven known planets.

Improving Brown Dwarf Weather Forecasts

Brown dwarfs have powerful winds and clouds -- specifically, hot patchy clouds made of iron droplets and silicate dust.

Scientists have discovered the strongest evidence to date for a stratosphere on a planet outside our solar system, or exoplanet. A stratosphere is a layer of atmosphere in which temperature increases with higher altitudes.

Scientists have long held the belief that planets - including Earth - were built from rocky asteroids, but new research challenges that view.

In the search for planets similar to our own, an important point of comparison is the planet's density.

This is the most comprehensive and detailed catalog release of candidate exoplanets, which are planets outside our solar system, from Kepler's first four years of data. It's also the final catalog from the spacecraft's view of the patch of sky in the Cygnus constellation.

Scientists suggest in a new study the existence of a planetary object called a "synestia," a huge, spinning, donut-shaped mass of hot, vaporized rock, formed as planet-sized objects smash into each other.

Scientists using NASA's Kepler space telescope identified a regular pattern in the orbits of the planets in the TRAPPIST-1 system that confirmed suspected details about the orbit of its outermost and least understood planet, TRAPPIST-1h.

Senior Scientist Tamara M. Rogers of the Planetary Science Institute has discovered that substantial variability in the winds on the hot giant exoplanet HAT-P-7b are due to magnetism, and used those measurements to develop a new method to constrain the magnetic field of such an object.

NASA's flying observatory, the Stratospheric Observatory for Infrared Astronomy, SOFIA, recently completed a detailed study of a nearby planetary system.

Many young stars, as well as more middle-aged stars like our sun, have "debris disks"--like the Oort Cloud in our own solar system--that are believed to be remnants of the system's formation.

The turbulent atmosphere of a hot, gaseous planet known as HD 80606b is shown in this simulation based on data from NASA's Spitzer Space Telescope.

On Feb. 22, astronomers announced that the ultra-cool dwarf star, TRAPPIST-1, hosts a total of seven Earth-size planets that are likely rocky, a discovery made by NASA's Spitzer Space Telescope in combination with ground-based telescopes.

Evidence of planetary debris surrounding a double sun, 'Tatooine-like' system has been found for the first time by a UCL-led team of researchers.

New planetary formation models from Carnegie's Alan Boss indicate that there may be an undiscovered population of gas giant planets orbiting around Sun-like stars at distances similar to those of Jupiter and Saturn.

NASA's Kepler observatory should be able to detect planetary moons - yet to be discovered - formed by far-away planetary collisions outside our Solar System, research by Amy Barr of the Planetary Science Institute shows.

An international team of astronomers released the largest-ever compilation of exoplanet-detecting observations made using a technique called the radial velocity method.

A possible planet in a nearby stellar system may be betraying its presence in a unique way: by a shadow that is sweeping across the face of a vast pancake-shaped gas-and-dust disk surrounding a young star.

Sun-like Star Ate Some Of Its Planets

An international team of scientists, including researchers from the University of Chicago, has made the rare discovery of a planetary system with a host star similar to Earth's sun.

Nearby Super Earth Discovered

A large planet has been discovered orbiting the star GJ 536.

Via a NASA-led citizen science project, eight people with no formal training in astrophysics helped discover what could be a fruitful new place to search for planets outside our solar system - a large disk of gas and dust encircling a star known as a circumstellar disk.

Modeling Weather on Hot Jupiters

The weather forecast for faraway, blistering planets called "hot Jupiters" might go something like this: Cloudy nights and sunny days, with a high of 2,400 degrees Fahrenheit (about 1,300 degrees Celsius, or 1,600 Kelvin).

A number of extrasolar planets have been found in the past two decades and now researchers agree that planets can have a wide variety of characteristics.

When a star is young, it is often still surrounded by a primordial rotating disk of gas and dust, from which planets can form.

Astronomers using ESO telescopes and other facilities have found clear evidence of a planet orbiting the closest star to Earth, Proxima Centauri.

Circumbinary planets experience a time varying irradiation pattern as they orbit their two host stars.

A four-planet system observed several years ago by the Kepler spacecraft is actually a rarity: Its planets, all miniature Neptunes nestled close to the star, are orbiting in a unique resonance that has been locked in for billions of years.

NASA's Kepler mission has verified 1,284 new planets - the single largest finding of planets to date.

On the Road to Finding Other Earths

Scientists are getting closer to finding worlds that resemble our own "blue marble" of a planet.

Imagine you want to measure the size of a room, but it's completely dark. If you shout, you can tell if the space you're in is relatively big or small, depending on how long it takes to hear the echo after it bounces off the wall.

In 2011, astronomers announced that our galaxy is likely teeming with free-floating planets.

Astrophysicists at the University of Birmingham have used data from the NASA Kepler space telescope to discover a class of extrasolar planets whose atmospheres have been stripped away by their host stars

Led by San Francisco State University astronomer Stephen Kane, a team of researchers has spotted an extrasolar planet about 117 light-years from earth that boasts the most eccentric orbit yet seen.

New images of a young star made with the Karl G. Jansky Very Large Array (VLA) reveal what scientists think may be the very earliest stages in the formation of planets.

Astronomers using NASA's Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its atmosphere. This is the first measurement of the rotation of a massive exoplanet using direct imaging.