SUNSET: 
Exoplanet Found in Triple Star System
Astronomers have retracted the discovery of a giant planet with an exceptionally wide orbit in a young system of three suns.
Giant Planets and Wonky Orbits
Kepler-108 is the first system observed with really wonky orbits, which may be a result of giant planets bumping into each other.
Newborn Exoplanets Point to Early Chaos
A recent glut of exoplanet research reveals the early chaos that helped shape planetary systems.
The Gaseous Footprints of Baby Planets
Astronomers re-analyzed two-year-old data from the ALMA observatory in Chile and discovered gas gaps that probably indicate baby planets in the disk around a young star.
Disk Around HR 8799 Hints at Hidden Fifth Planet
A high-resolution ALMA image of the HR 8799 planetary disk suggests undiscovered planet.
Kepler’s 1,284 Newly Confirmed Planets
Even though Kepler’s primary mission ended three years ago, the data it collected just revealed a mother lode: 1,284 newly confirmed planets.
Light Echoes Map Planet-forming Disk
Light’s finite speed helped astronomers pinpoint the location of the “inner wall” of the disk of dust and gas that’s feeding a fast-growing baby star.
Earth-size Planets Around Nearby Dwarf Star
Astronomers just discovered three planets, two of which are roughly the size of Earth, orbiting a dim nearby dwarf star. Their proximity makes their atmospheres ripe for observing.
$100 Million for Fast Probes to Alpha Centauri. Yes, Really.
Yuri Milner commits $100 million to Breakthrough Starshot, a research and development project toward sending interstellar nanoprobes to Alpha Centauri.
Hot Nights, Hotter Days on Exoplanet 55 Cancri e
A new thermal map of a super-Earth exoplanet is puzzling astronomers.
Exoplanet in the Hyades Star Cluster
Professional and amateur astronomers working together have found a young exoplanet in the Hyades star cluster. The planet is weirdly large, given its host star.
Hubble Sheds Light on Super Exoplanets
New observations from the Hubble Space Telescope are helping characterize the atmospheres of exotic planets such as 55 Cancri e.
Hunting for Planets Around Proxima Centauri
The Pale Red Dot Initiative has begun the search in earnest for exoplanets orbiting the nearest star to Earth besides the Sun.
Hubble Peers Inside Exoplanets' Atmospheres
Astronomers studying hot Jupiter exoplanets revealed when and how clouds form on these alien worlds.
Kepler’s Giant Exoplanet Candidates — Real or Not?
A new study shows that about half of Kepler’s giant exoplanet candidates aren’t real planets. But astronomers expected this.
Forming Exoplanets Near and Very Far
Astronomers at the Extreme Solar Systems III conference announced several exciting results this week.
White Dwarf Eats Mini Planet?
Astronomers have detected debris around a white dwarf that might be from one or more disintegrating rocky planets.
The Curious Case of KIC 8462852
The Kepler spacecraft recorded a bunch of irregular dimmings around one of its target stars, designated KIC 8462852. No natural phenomenon explains the dips well.
Searching for Exoplanets Around HL Tau
When astronomers went searching for the planets that must exist around HL Tau, they came up empty — and future searches may not fare much better.
A Dusty Mystery Around AU Microscopii
Unexplained ripples have been found racing through a dusty disk.