101–120 of 338 results
Sub-Saturn (art)


Scientists Question Popular Planet Formation Theory

New studies are challenging the core accretion theory, the primary model astronomers use to understand how worlds form in our solar system and beyond.

Confirmed TESS exoplanets


NASA’s TESS Mission Announces New Planets, Supernovae

The TESS mission announces eight confirmed planets along with hundreds of exoplanet candidates.


Exploring the Escaping Atmosphere of HAT-P-11b

The atmospheres of planets close to their host stars live a tenuous existence. New observations from the Hubble Space Telescope show signs of a Neptune-like exoplanet’s atmosphere being eroded away.

Illustration of planet transit


Amateur Planet Hunters Have a New Online Resource

A database run by the American Association of Variable Star Observers will organize and archive data on transiting exoplanets collected by amateur astronomers.

Illustration of surface of planet orbiting Barnard's star


A Chilly Super-Earth May Orbit Barnard's Star

One of the closest stars to the Sun hosts a planet at least three times as massive as our own where temperatures might be just low enough to freeze liquid water.


Planets Appear More Massive Than Disks Where They Form

Infant worlds might gobble up dust quickly, the interstellar environment might feed protoplanetary disks, or planet-building dust could be hiding in plain sight. Although disks of gas and dust around young stars are a necessary precursor to planet formation, an expanded survey of stars in our Galaxy confirms earlier doubts…

Illustration of Kepler-1625b and exomoon in transit


Hubble Boosts Case for Exomoon

Exoplanet Kepler-1625b might harbor a moon the size of Neptune—potentially the first confirmed exomoon—but researchers urge caution.

Art: a super-Earth we could call Vulcan


Super-Earth Discovered in (Fictional) Vulcan System

Thirty years ago, Gene Roddenberry, of Star Trek fame, and three astronomers made the case that the orange-hued star 40 Eridani A ought to host Vulcan, Mr. Spock's home. Now, a robotic survey has discovered a planet around that very star.

Beta Pictoris b


Astronomers "Weigh" Beta Pictoris b

Astronomers have a precise new mass measurement for Beta Pictoris b, a young gas giant still in the throes of formation 63 light-years from Earth.

Hottest Jupiter


Iron and Titanium Found in Ultrahot Jupiter

New observations provide solid evidence of heavy metals in a gas giant exoplanet’s atmosphere.


Planet Formation Caught in the Act

A team of scientists has captured evidence that PDS 70b, the first directly imaged instance of early planet formation, is actively accreting material, and they’ve measured the rate at which it’s growing.

Brown Dwarf with Aurora


Auroras Discovered Around Rogue Brown Dwarf

Astronomers have discovered auroras around a set of brown dwarfs — including one that wanders the galaxy by itself — indicating surprisingly strong magnetic fields in these failed stars.


When Giant Planets Orbit Evolved Stars

A new study explores the impacts of stars that age past the main sequence and evolve into red giants on the planets orbiting around them by looking at the orbits of gas giants closely circling evolved stars.

PDS 70b


First Confirmed Image of Newborn Planet

Astronomers using a new instrument on the Very Large Telescope in Chile have directly imaged a newborn planet.

3D View of Musca star-forming cloud


60-Second Astro News: 3D View of Star-Forming Cloud & A Cloud-Free Exoplanet

This week in astronomy news: Researchers discover the first completely cloud-free exoplanet and a star-forming cloud reveals its structure through vibrations.



Scientists Spot Helium Escaping Giant Planet's Atmosphere

Hubble observations reveal a Jupiter-size exoplanet losing its atmosphere in a system 200 light-years away.

ASTERIA team members


60-Second Astro News: Tech Advances for Exoplanet Hunters

A mini-satellite demonstrates exoplanet-hunting technology, a superconducting camera tests its abilities to image exoplanets, and bad news for life on Proxima Centauri b.

TESS launch

Space Missions

Successful Launch for NASA’s TESS Exoplanet Mission

The Transiting Exoplanet Survey Satellite (TESS) launched successfully on April 18th at 6:51 p.m. EDT aboard a SpaceX Falcon 9 rocket to survey the entire sky for new worlds.

ARIEL Mission

Astronomy in Space with David Dickinson

ARIEL: Next-Decade Exoplanet Mission Selected

The European Space Agency's ARIEL mission will seek to analyze the atmospheric composition and true nature of distant worlds.


The Fate of Exomoons when Planets Scatter

Planet interactions are thought to be common as solar systems are first forming and settling down. A new study suggests that these close encounters could have a significant impact on the moons of giant exoplanets — and they may generate a large population of free-floating exomoons.