Comets don't explain the strange 'alien megastructure' star
It's just as mysterious as ever.
Astronomers spot a star with a Jupiter-like storm
This brown dwarf's massive storm is reminiscent of Jupiter's Red Spot.
Black hole ejects massive energy jet after devouring a star
Nothing good happened to a star that ventured too close to a supermassive black hole.
That star's 'alien megastructure' is likely just a swarm of comets
It's tempting to think that an unusual star is enveloped by alien satellites, but the truth is likely far more pedestrian.
Astronomers find the first planet known to orbit a white dwarf
Astronomers have spotted a planet slowly being eradicated by a dying star.
A swarm of alien satellites may explain one star's strange behavior
Scientists say it's still a long shot, but it's a theory worth considering in this case.
The Big Picture: A nebula with the grace of a butterfly
The Hubble Space Telescope team has captured a stunning snapshot of the Twin Jet Nebula's unique patterns.
Here's how the largest galaxies die
Like it or not, all galaxies will eventually die. But have you wondered just how they meet their g...
Satellite captures a baby star's 'growth spurt'
It's trivial to see mature stars in action, but baby stars are another matter. They 'only' spend 1...