41–60 of 266 results


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

Spacecraft and 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


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.


An Eccentric Planet Skims a Giant Star

As part of a major survey of evolved stars, scientists have discovered the most eccentric planet known to orbit a giant. What can we learn from this unusual object before it’s eventually consumed by its host?

TRAPPIST-1 system


A Closer Look at the Worlds of TRAPPIST-1

Two new studies of the seven planets orbiting TRAPPIST-1 shed light on how these worlds formed and what they look like now.

Brown dwarf


A New Definition for the Biggest Planets?

Scientists now understand where large planets stop and small brown dwarfs begin — a discovery that redefines the word “planet.”



Extra Stars Might Downsize Exoplanets

Follow-up studies of candidates planetary systems found by NASA’s Kepler mission suggest that companion stars make some worlds appear smaller than they really are.

Stellar Science

Ringed Disks Don’t Always Mean Planets

Astronomers presenting at the winter American Astronomical Society meeting caution that the features often pointed to as evidence of growing natal planets could form on their own.


Metal-rich Stars Host Closer Planets

Iron-rich stars host planets on closer orbits than their iron-poor siblings, astronomers find. The results could help reveal how planets form.


More Planets in the Hyades Cluster

A few weeks ago, Astrobites reported on a Neptune-sized planet discovered orbiting a star in the Hyades cluster. A separate study submitted at the same time, however, reveals that there may be even more planets lurking in this system.

star on a scale


60-Second Astronomy News: Dec. 20, 2017

This week's roundup of astro news brings us a polar-orbiting planet, a novel way to measure stellar masses, and ginormous convective bubbles on a distant star.

Kepler-90 system


Neural Network Finds 8-Planet System

Scientists have applied a brand of artificial intelligence to data from the exoplanet-hunting Kepler satellite, resulting in the discovery of the first eight-planet system outside our own.

55 Cancri e, artist's concept


Atmosphere, Not Lava Flows, for Exoplanet 55 Cancri e

Previous studies of 55 Cancri e haven’t been able to determine whether this super-Earth hosts an atmosphere. A new study settles the question.

Temperate exoplanet 11 light-years away


Planet Orbits Quiet Star 11 Light-years Away

Astronomers have discovered a potentially rocky planet around a red dwarf star just 11 light-years away.


Cool Dust — and More Planets? — for Proxima Centauri

Tantalizing new observations hint that there's a lot more going on in the Proxima Centauri system — the one that hosts the exoplanet nearest Earth — than meets the eye.