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A planet that orbits around a star other than the Sun.



Aquarius October 4, 2011

Cancer, the Crab

Cancer, the Crab October 4, 2011

Libra, the Scales

Libra, the Scales October 4, 2011

Facts and Figures June 10, 2010

Rings encircle a young planet in this artist's concept.

Exoplanets May 21, 2010

Featured Images

future exomoon around a planet in pds 70

Future Moon? July 25, 2021

Big Planet, Little Star June 28, 2021

A hot super-Earth

Super Planets May 8, 2021

Exoplanet WASP-121b

Metallic Skies January 21, 2021

Artistic idea of a planet imaged through a solar gravitational lens

Long-Range Scanner September 28, 2020

artist's concept of TrES-2b

Dark World September 18, 2020

Busy View September 14, 2020

Two giant planets are visible in this view of TYC 8998-760-1

One System, Two Planets July 22, 2020

Artist's concept of a planet orbiting the star Tau Ceti

Inhospitable Planet April 8, 2020

Wasp-49b system

Hot Moon April 1, 2020

The CHEOPS space telescope heads for space

On Its Way December 19, 2019

51 Pegasi b

Starting a Gold Rush December 6, 2019

Exoplanets galore

Who's First? December 4, 2019

artist's concept of aftermath of a collision around NGC 2547-ID8

Messy Star System October 25, 2019

CHEOPS in orbit

Following Up October 11, 2019

Artist's concept of a super-heated planet

Scalding Planet August 2, 2019

Exoplanet Barnard's Star b

Super Planet June 27, 2019

Artist's concept of possible Earth-like worlds in other star systems

Planet Parade April 15, 2019

Artist's concept of Epsilon Eridani b, one of the closest exoplanets to Earth

Close Neighbors January 31, 2019

Looking for Life December 17, 2018

Farewell to a Planet Hunter October 31, 2018

Glowing Planets August 25, 2018

VLT view of young planet orbiting the star PDS 70

Taking Shape July 2, 2018

Dusty Star April 14, 2018

Artist's concept of TESS in front of a star with several transiting planets

New Hunter March 20, 2018

Planets orbiting the pulsar PSR B1257+12

Second-Chance Planets January 25, 2018

Artist's concept of HAT-P-7b

Planetary Jewel April 12, 2017

Protoplanetary disks around three young stars

Swirling Planets November 9, 2016

Backlit Planet September 16, 2016

The faint star Trappist-1 and three of its planets

Cool Star, Warm Planets? September 14, 2016

Artist's concept of the star system 51 Pegasi, featuring a giant planet

The First October 12, 2015

Artist's concept of a young Jupiter-like planet

Young Giant August 27, 2015

Artist's concept of a moons orbiting a Jupiter-like exoplanet

Worlds of Worlds June 9, 2015

Ringfest May 20, 2015

Radio Programs

Moon and Jupiter Giant planets change partners June 28, 2021

Making Super-Earths Sculpting some rocky planets May 8, 2021

Tatooine-Plus Stars galore for a unique planet May 7, 2021

Lava Planet A planet covered in molten rock May 6, 2021

Black-Hole Planets Making planets around giant black holes May 5, 2021

Moon and Planets Moving around some giant planets May 3, 2021

Moon and Saturn Making exoplanets look “puffy” April 5, 2021

HD 69830 An old star with close planets April 1, 2021

Big Detectors A search for tiny particles in big planets February 26, 2021

Metallic Skies Rare metals in distant skies January 21, 2021

Kepler-444 A tight family of ancient planets December 18, 2020

The Great Silence The silence of the galaxy November 24, 2020

Steamy Planets Planets hidden by steamy atmospheres November 23, 2020

Ancient Planet The life of an ancient planet November 22, 2020

Youngest Planet A young planet’s uncertain future November 21, 2020

Disappearing Planet A bright star loses a planet November 20, 2020

Breakthrough Starshot Paying a call on the neighbors September 30, 2020

Solar Lens A giant “lens” for imaging planets September 28, 2020

Dark Planet A hot but dark planet September 18, 2020

Rapid Birth Making planets in a hurry September 17, 2020

More Trappist-1 A planet with a busy sky September 15, 2020

Trappist-1 A puny star with a big family September 14, 2020

Proxima Centauri C Digging up a new planet August 24, 2020

Moon and the Beehive Planets in a busy star cluster June 23, 2020

Alpha Centauri Planets Looking for close neighbors June 10, 2020

Volcanic Exomoon Looking for a “hellish” moon April 1, 2020

Hardy Planet Surviving the death of a star March 31, 2020

Moon and Spica An unlikely place for planets January 17, 2020

51 Pegasi Setting off a Gold Rush December 6, 2019

Pulsar Planets Planets in the strangest places December 5, 2019

First Planet Future Leader December 4, 2019

Transits Peeking in on other planets November 11, 2019

Ploonets A new term for the astronomy dictionary October 14, 2019

CHEOPS Going for the details October 11, 2019

Fomalhaut Taking the picture of a distant world October 7, 2019

Distant Planet Planet-hunting patience pays off July 25, 2019

Hot Jupiters Growing hot, giant planets June 28, 2019

Super-Earths Look! Up in the sky! It’s a Super-Earth! June 27, 2019

Looking for Earths Looking for Earth-sized planets June 26, 2019

More Kepler New discoveries from a dead mission March 8, 2019

Kepler A prolific planet hunter March 7, 2019

Habitable Planets Counting planets in the habitable zone February 5, 2019

Close Planets Planets without neighbors February 4, 2019

Moon and Aldebaran Bullish outlook on planets December 20, 2018

Planet Hunters Photographing hundreds of planets December 18, 2018

Biosignatures Signs of life among the stars December 17, 2018

Moon and Aldebaran Chilling a distant planet November 22, 2018

Collision Zones A big impact around a young star October 15, 2018

PANOPTES A grassroots hunt for exoplanets October 2, 2018

Evryscope Many eyes on the southern sky October 1, 2018

Distant Planets Planets at the spout of the teapot August 29, 2018

Spitzer Space Telescope New targets for a space telescope August 25, 2018

Selective Viewing Selecting the right targets July 12, 2018

Moon, Jupiter, Spica Restructuring planetary systems May 26, 2018

Hyades Planets Looking into a stellar laboratory April 5, 2018

Second-Chance Planets New planets after a stellar explosion January 25, 2018

More Aries A hot future for a distant planet December 27, 2017

Doomed Giant The final days of a giant planet December 8, 2017

Evidence of a Planet Early evidence of a planet? October 24, 2017

Fomalhaut The busy environs of a bright star October 7, 2017

Planetary Nomads Nomadic planets wander through the galaxy October 6, 2017

Long Eclipse? Looking for a distant eclipse September 6, 2017

Giant Magellan Telescope II Getting to know distant planets August 10, 2017

Vanishing Planets Doomed planets around a dying star July 27, 2017

Rio Scale Rating the odds of finding ET April 14, 2017

Three Venuses One Venus here, two more elsewhere April 13, 2017

Planetary Gems Garnets and rubies and sapphires, Oh, my! April 12, 2017

Counting Starspots Counting spots on a small star March 3, 2017

Misaligned Disks Looking into the future of young stars February 3, 2017

Lepus Chasing down a celestial rabbit January 28, 2017

Autumn Star The dusty “autumn star” September 24, 2016

Exoplanets VI Extinct life and non-civilizations September 17, 2016

Exoplanets V Looking for signs of life September 16, 2016

Exoplanets IV Looking for distant moons September 15, 2016

Exoplanets III Hunting for life in all the right places September 14, 2016

Exoplanets II Pigeon-holing new planets September 13, 2016

Exoplanets Big discoveries from little telescopes September 12, 2016

Birth and Death Birth and death for distant planets June 13, 2016

Vega Getting the right angle on a star June 1, 2016

Volunteer Astronomers Astronomers get some helping hands April 27, 2016

Alien Weather Extreme weather on an alien world April 7, 2016

Starshade Zeroing in on habitable planets March 18, 2016

WFIRST Unwrapping a Christmas present March 17, 2016

New Names New names for a family of planets February 19, 2016

Planetary Pebbles Ingredients for a giant planet February 14, 2016

Tau Ceti Visiting a dusty star system — after this. January 4, 2016