Exoplanets TOP STORY

18 Earth-sized Exoplanets Discovered

© NASA

Mars Imaged by Hubble

Somewhat more than 4000 planets orbiting stars outside our solar system are known so far.


Full Story

Exoplanets

Small, Hardy Planets Most Likely To Survive Death Of Their Stars

© University of Warwick/Mark Garlick

Copernicus Detail

Small, hardy planets packed with dense elements have the best chance of avoiding being crushed and swallowed up when their host star dies, new research from the University of Warwick has found.

Exoplanets

Gravitational Forces in Protoplanetary Disks May Push Super-Earths Close To Their Stars

Gravitational Forces in Protoplanetary Disks May Push Super-Earths Close To Their Stars

The galaxy is littered with planetary systems vastly different from ours.


Exoplanets

Ashes Of A Dying Star Hold Clues About Our Solar System's Birth

Ashes Of A Dying Star Hold Clues About Our Solar System's Birth

A grain of dust forged in the death throes of a long-gone star was discovered by a team of researchers led by the University of Arizona.


Exoplanets

Third Planet Discovered In The Kepler-47 Circumbinary System

Third Planet Discovered In The Kepler-47 Circumbinary System

Using data from NASA's Kepler space telescope, a team of researchers, led by astronomers at San Diego State University, detected the new Neptune-to-Saturn-size planet orbiting between two previously known planets.


Exoplanets

TESS Finds Its First Earth-sized Planet

TESS Finds Its First Earth-sized Planet

A nearby system hosts the first Earth-sized planet discovered by NASA's Transiting Exoplanets Survey Satellite, as well as a warm sub-Neptune-sized world.


Exoplanets

Heavy Metal Planet Fragment Survives Destruction From A Dead Star

Heavy Metal Planet Fragment Survives Destruction From A Dead Star

A fragment of a planet that has survived the death of its star has been discovered by University of Warwick astronomers in a disc of debris formed from destroyed planets, which the star ultimately consumes.


Exoplanets

Astronomers Discover Two New Planets Using Artificial Intelligence

Astronomers Discover Two New Planets Using Artificial Intelligence

Astronomers at The University of Texas at Austin, in partnership with Google, have used artificial intelligence (AI) to uncover two more hidden planets in the Kepler space telescope archive.


Exoplanets

Cooking Up Alien Atmospheres On Earth

Cooking Up Alien Atmospheres On Earth

Researchers at NASA's Jet Propulsion Laboratory in Pasadena, California, are cooking up an alien atmosphere right here on Earth.


Exoplanets

ALMA Observes the Formation Sites of Solar-System-like Planets

ALMA Observes the Formation Sites of Solar-System-like Planets

Researchers have spotted the formation sites of planets around a young star resembling our Sun.


Exoplanets

Kepler's First Exoplanet Candidate Confirmed, 10 Years After Launch

Kepler's First Exoplanet Candidate Confirmed, 10 Years After Launch

An international team of astronomers, led by University of Hawaii graduate student Ashley Chontos, announced the confirmation of the first exoplanet candidate identified by NASA's Kepler Mission.


Exoplanets

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

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

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.


Exoplanets

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

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

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.



More top stories from February.