SUNSET: 
Planet WASP-12b Might Be on a Death Spiral into its Parent Star
A mere 3 million years from now — a cosmic eye-blink away — the star WASP 12 might consume its exoplanet WASP-12b.
September 2019: Triangle Time
Download September's Sky Tour astronomy podcast for tips on observing Jupiter, Saturn, and the easy-to-spot Summer Triangle.
Have Astronomers Detected Exomoons At Last?
Have astronomers detected two giant exomoons? The answer depends on how convincing you deem newly presented results — and how you define a moon.
A Possible Solution to Mars’s Methane Problem
A small amount of seepage could explain conflicting measurements of methane in the Martian atmosphere.
Be a Warrior — Tackle a Trojan Asteroid
You've seen Jupiter and its four brightest moons. Now meet the rest of the family — the Trojan asteroids.
The Supernova That Destroyed Its Star
Astronomers have discovered a real and unprecedented example of a type of supernova that was until now largely theoretical — a stellar explosion that leaves nothing behind.
Century of Amateur Observations Shed Light on Star's Evolution
The amateurs of the AAVSO monitored the star T Ursae Minoris for a century. Now, astronomers think they can explain the star's recent change in behavior.
A Nearby Stellar Stream Gets Carded
The stellar stream Pisces–Eridanus may try to pass itself off as a billion years old, but scientists are calling its bluff.
Image Sleuth Spots "Churyumoon" Around Rosetta's Comet
A tiny, 4-meter fragment dubbed Churyumoon has been spotted orbiting Comet 67P Churyumov-Gerasimenko, which the Rosetta mission visited in 2014–2016.
Stargazer's Corner: Adventures Under the Night Sky
Where is the Tropic of Capricorn?
A well-traveled geophysicist recounts his curious findings at a prominent geographic benchmark in the Southern Hemisphere.
Beta Pic's New Planet, Jupiter’s Fuzzy Core & An Ancient Star
Astronomers announce another planet around Beta Pictoris, simulations explain Jupiter's large and fuzzy core, and observations reveal an ancient star.
The RAC Summer Star Party
It's high summer and time to party — star party, that is. The RAC Summer Star Party offered fun, friends, and some good, clear nights this year. As is typical for New England, the spring season was wet and cloudy with few opportunities for extended observing sessions. But at least…
NASA Selects Final Four Asteroid Landing Sites for Osiris-REX
The Osiris-REX spacecraft will sample one of four sites on the asteroid Bennu in July 2020.
An “Impossible” White Dwarf Identified in Kepler Data
Meet the white dwarf that defies all expectations.
"Invisible" Galaxies Found in the Young Universe
Astronomers have discovered galaxies that have escaped detection until now, uncovering a missing link in galaxy evolution.
Maunakea Observatories Shuttered Amid Protests (Update: Observatories Have Reopened)
As protests against the construction of the Thirty Meter Telescope continue, the directors of Maunakea Observatories have taken the unprecedented move of closing all observatories atop the mountain.
Texas Amateur Detects Possible Impact on Jupiter
It looks like Jupiter got slammed again! A bright flash from a possible impact lit up the planet's South Equatorial Belt Tuesday night.
New Images from China's Chang'e 4 as Eighth Lunar Day Ends
China’s Chang’e 4 mission is continuing its science and exploration work on the farside of the Moon, having completed its eighth lunar day of activities on Wednesday.
From Lunar Flashes to Variable Stars: Pro-Am Astronomy Projects
Track satellites, spot flashes on the Moon, monitor violent stars — learn how amateur astronomers can become involved in professional science.
TESS's First Year of Science
NASA’s latest exoplanet hunter has found more than two dozen new worlds, at least one of which might be habitable.
