SUNSET: 
KELT-9b: Hottest Hot Jupiter Exoplanet Yet
Astronomers announce the discovery of bloated gas giant KELT-9b, the hottest "hot Jupiter" exoplanet known orbiting a short-lived massive star.
Help Astronomers Track a Giant, Ringed Planet
The possible discovery of a massive ringed planet in Orion needs confirmation — and amateur astronomers can help.
NASA's Parker Solar Probe to Touch the Sun
NASA's Parker Solar Probe, set to launch in 2018, will be humanity's first effort to "touch the Sun," revolutionizing our understanding of the Sun's corona, the solar wind, and the greater heliosphere.
Homing in on the Source of a Mysterious Fast Radio Burst
Ground- and space-based observations have now shed intriguing new light on a mysterious radio source more than 3 billion light-years away.
Two New Satellites for Jupiter
Just a mile across, a pair of moonlets found orbiting Jupiter bring the planet's total satellite count to 69.
NASA's Lunar Orbiter Takes a Hit
A Moon-orbiting camera briefly shuddered — then got back to work — when it was hit by a tiny bit of space rock no bigger than a pinhead.
LIGO Detects Third Black Hole Merger
Scientists with the gravitational-wave observatory announce another discovery, this time of a black hole merger twice as far away as previous detections.
Tour June's Sky: Saturn at Opposition
June's astronomy podcast takes you on a star- and planet-studded tour of the sky you'll see after sunset.
Potential “Failed Supernova” Black Hole Discovered
Astronomers may have watched a star collapse directly into a black hole — minus the supernova. The failed supernova could help understand how stars die.
Watch Venus and Uranus Double Up Beneath a Comet
Following an occultation of Rho Leonis by the Moon, watch Venus and Uranus pair up in a weekend conjunction just 10° from Comet ER61 PanSTARRS.
New Clues on Fate of Schiaparelli Mars Lander
The European Space Agency has released its investigation into the crash of the Schiaparelli Mars lander in October 2016.
Mission to Asteroid Psyche to Launch Earlier Than Anticipated
The Psyche mission to asteroid 16 Psyche had its launch date pushed up — and will now arrive well before originally planned.
New Impact Flash Seen on Jupiter
Flash! A comet or asteroid fragment whacked Jupiter on May 26th. It's the sixth time that observers on Earth have witnessed an impact on the giant planet.
The Origin of the Milky Way's Mysterious Gamma Rays
Our galaxy's center region is producing gamma rays, but astronomers are still debating whether pulsars or dark matter are the source. Three recent studies tackle the debate head-on.
Juno: Surprises in First Science Results
From its dynamic atmosphere to its hidden depths, the Juno spacecraft has Jupiter as never before — surprising NASA scientists with unexpected complexity.
ASKAP Joins the Hunt for Mysterious Bursts
ASKAP, the Australian Square Kilometre Array Pathfinder has only had a 3.4-day pilot survey and has already found a fast radio burst!
Brown Dwarfs Mimic Their Big Stellar Siblings
Two recent studies suggest that brown dwarfs, or so-called “failed stars,” are nevertheless more like stars than planets.
Seventh TRAPPIST-1 Planet Confirmed
Astronomers have confirmed the existence of the seventh planet around the ultracool dwarf star TRAPPIST-1.
How Hard Did It Rain on Ancient Mars?
Mars was once far wetter than it is now — but just how much rain fell, and when?
Finally! The Galaxy’s Most Mysterious Star Is Dimming
Tabby's star, otherwise known as the most mysterious star in the galaxy, is dipping drastically in brightness, giving astronomers an opportunity to figure out what has been causing this star's weird behavior.
