SUNSET: 
Breakthrough Starshot Takes to Space
Six Sprites, "the world's smallest spacecraft" have entered low-Earth orbit, a small milestone for Breakthrough Starshot's plan for interstellar voyage.
Could Spacecraft Make it to Proxima Centauri?
Dust and gas between stars would pose a threat to spacecraft en route from Earth to the Alpha Centauri system — and scientists are seriously considering the problem now that the prospect of interstellar travel is no longer sci-fi.
Exoplanet Found Around Proxima Centauri
Astronomers have discovered a planet in the habitable zone of the closest star to the Sun.
$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.
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.
How Far is the Closest Star?
Barring the Sun, the closest star to Earth is a triple system called Alpha Centauri, which is over four light years away.
No Planet of Alpha Centauri B?
The uncertain tale of our closest exoplanet neighbor — is it there or isn’t it? — may end on a cliffhanger.
Planet Found in Alpha Centauri System
Astronomers announced what might be the closest exoplanet to Earth, a roasted Earth-mass world whipping around the Sun-like star Alpha Centauri B.
What date were the two principal stars of the Alpha Centauri system last known to be closest to each other?
On what terrestrial date were the two principal stars of the Alpha Centauri system last known to be closest to each other in space? According to the orbit recently published by Belgian astronomer Dimitri Pourbaix, α1 and α2 Centauri were closest in space (at periastron) in early August 1955, and…
