Exoplanets TOP STORY

Microlensing Reveals Sub-Saturn Giant Planets are Common, Not Rare

© Keck/NASA

OGLE-2012-BLG-0950Lb

Astronomers have found a new exoplanet that could alter the standing theory of planet formation. With a mass that's between that of Neptune and Saturn, and its location beyond the "snow line" of its host star, an alien world of this scale was supposed to be rare.


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Exoplanets

TESS Rounds Up Its First Planets, Snares Far-Flung Supernovae

© NASA

TESS discoveries

NASA's Transiting Exoplanet Survey Satellite (TESS) has found three confirmed exoplanets, or worlds beyond our solar system, in its first three months of observations.

Exoplanets

TESS Discovers Its Third New Planet

TESS Discovers Its Third New Planet

NASA's Transiting Exoplanet Survey Satellite, TESS, has discovered a third small planet outside our solar system, scientists announced this week at the annual American Astronomical Society winter meeting in Seattle.


Exoplanets

Hubble Finds a Fast Evaporating Exoplanet

Hubble Finds a Fast Evaporating Exoplanet

Fishermen would be puzzled if they netted only big and little fish, but few medium-sized fish.


Exoplanets

Exoplanet Surveyor Cheops Undergoes Testing

Exoplanet Surveyor Cheops Undergoes Testing

ESA's exoplanet-characterising Cheops satellite being prepared for electromagnetic compatibility testing inside the Maxwell chamber at ESTEC, the Agency's technical heart in Noordwijk, the Netherlands.


Exoplanets

Giant Planets Around Young Star Raise Questions About Formation

Giant Planets Around Young Star Raise Questions About Formation

Researchers have identified a young star with four Jupiter and Saturn-sized planets in orbit around it, the first time that so many massive planets have been detected in such a young system.


Exoplanets

Spock's Home Planet Vulcan Found Orbiting 40 Eridani A

Spock's Home Planet Vulcan Found Orbiting 40 Eridani A

Among the TV series Star Trek's many charms are its rich universe of characters and planets.


Exoplanets

Hit-and-Run Heist of Water by Terrestrial Planets in the Early Solar System

Hit-and-Run Heist of Water by Terrestrial Planets in the Early Solar System

A study simulating the final stages of terrestrial planet formation shows that 'hit-and-run' encounters play a significant role in the acquisition of water by large protoplanets, like those that grew into Mars and Earth.


Exoplanets

First Science Image From TESS

First Science Image From TESS

NASA's newest planet hunter, the Transiting Exoplanet Survey Satellite (TESS), is now providing valuable data to help scientists discover and study exciting new exoplanets, or planets beyond our solar system.


Exoplanets

NASA Urged To Mount Large Direct Imaging Mission For Exoplanets

NASA Urged To Mount Large Direct Imaging Mission For Exoplanets

To answer significant questions about planetary systems, such as whether our solar system is a rare phenomenon or if life exists on planets other than Earth, NASA should lead a large direct imaging mission - an advanced space telescope.


Exoplanets

A New Stage In The Evolution of Young Solar Systems

A New Stage In The Evolution of Young Solar Systems

Astronomers from the Department of Physics at the University of Tokyo discovered a dense disk of material around a young star, which may be a precursor to a planetary system.


Exoplanets

Astronomers Find A Famous Exoplanet's Doppelganger

Astronomers Find A Famous Exoplanet's Doppelganger

When it comes to extrasolar planets, appearances can be deceiving. Astronomers have imaged a new planet, and it appears nearly identical to one of the best studied gas-giant planets.


Exoplanets

Planet Formation Starts Before Star Reaches Maturity

Planet Formation Starts Before Star Reaches Maturity

A European team of astronomers has discovered that dust particles around a star already coagulate before the star is fully grown.


Exoplanets

TESS Takes Test Image And Swings Past The Moon

TESS Takes Test Image And Swings Past The Moon

NASA's next planet hunter, the Transiting Exoplanet Survey Satellite (TESS), is one step closer to searching for new worlds after successfully completing a lunar flyby on May 17.


Exoplanets

Astronomers Photograph Possible Young Planet by Chance

Astronomers Photograph Possible Young Planet by Chance

An international team of astronomers headed by Dutch researchers from Leiden University has coincidently found a small companion around the young double star CS Cha.


Exoplanets

Hubble Detects Helium In An Exoplanet Atmosphere For The First Time

Hubble Detects Helium In An Exoplanet Atmosphere For The First Time

Astronomers using the NASA/ESA Hubble Space Telescope have detected helium in the atmosphere of the exoplanet WASP-107b.



More top stories from February.