SUNSET: 
Astronomers Spot A Tiny Binary System
A tiny binary system is not only small but also ancient, billions of years older than other such systems, which raises questions about its origins.
Astronomers Discover Giant Blinking Star
A red giant star thousands of light-years away "blinked," dimming significantly for seven long years, before returning to normal.
This Triplet of Stars Was Once a Quartet
Stellar mergers in quadruple systems might be common, a new study shows.
The Black Hole Files with Camille Carlisle
“Closest Black Hole” Doesn’t Exist, After All
Astronomers combined forces to confirm that a black hole proposed to lie a mere 1,000 light-years away isn’t really there.
Take a Roller Coaster Ride with Algol, a Fast Eclipsing Binary
How would you like to see a star drop two magnitudes in the time it takes to eat dinner? Easy to do. Just check out one of these fast eclipsing binaries — they'll make your head spin.
See Ancient “North Stars" Eclipse Each Other
The ancient pole star known as Thuban turns out to be an eclipsing binary. If you're up for a challenge, you can see the eclipses for yourself.
Third Planet Found Orbiting Binary Star System Kepler 47
Astronomers have found a third planet circling a pair of stars in the Kepler 47 system.
Low-key supernova marks possible birth of neutron star duo
A massive star lost most of its mass before exploding and creating a neutron star — and a second nearby neutron star might have been the thief.
Typo Throws Off Timing for Expected Binary Star Merger
Revised data changed expectations for a star pair that was supposed to merge in 2022.
Is T CrB About to Blow its Top?
The recurrent nova T Coronae Borealis last made a splash just after World War II. Does its current restive state hint at an imminent outburst?
Before They Were (Binary) Stars
Astronomers have taken a behind-the-scenes look at a set of dense gas clumps, catching a quadruple star system in the fleeting act of formation.
Explore Binary Stars on Your Computer
Additional information from the August 2012 article Solve Binary Stars Yourself. Provides links to various programs that allow users to explore binary stars up close and personal.
Fastest Known Binary Star
In the time it takes you to read this news story, the ultra-tightly paired stars known as HM Cancri will have completely spun around each other.
How can binary stars orbit each other so fast?
In a News Note (S&T: November 2004, page 16) you described WR 20a, a binary star in Carina with components of 83 and 82 solar masses and an orbital period of 3.686 days. How can two huge balls of gas move so fast? Grab any introductory astronomy textbook and turn…
New Binary Neutron Star Will Test Einstein
Astronomers have just found the closest ever pair of neutron stars — one of them a pulsar.