comets
Latest about comets

What can we do with a captured asteroid?
By Paul Sutter published
Asteroids are packed with gold and other valuable resources. And the best way to harvest those metals may be to bring space rocks to Earth.

Newly found mega comet may be the largest seen in recorded history
By Elizabeth Howell published
A giant comet found far out in the solar system may be 1,000 times more massive than a typical comet, making it potentially the largest ever found in modern times.

5,200 tons of extraterrestrial dust fall on Earth each year
By Stephanie Pappas published
Each year, 5,200 tons of space dust fall to Earth, far outweighing larger meteorites that hit the planet.

Interstellar interloper 2I/Borisov may be the most pristine comet ever observed
By Charles Q. Choi published
The first known interstellar comet to visit our solar system may be the most pristine ever found, never passing near a star until visiting our own, researchers say.

Dinosaur-killing space rock may have originated at the edge of the solar system
By Stephanie Pappas published
The chunk of space rock that killed the nonavian dinosaurs may have been a piece of a comet that Jupiter's gravity kicked onto a collision course with Earth.

The 'rubber ducky' comet is glowing
By Rafi Letzter published
The rubber ducky comet is glowing, but you can't see it. New analysis of data from the Rosetta probe shows an ultraviolet aurora all around the speeding object.

The sun may have a long-lost twin
By Rafi Letzter published
There's a strange sphere of mass at the outer reaches of solar space. Did another star help put it there?

Interstellar visitor 'Oumuamua could still be alien technology, new study hints
By Rafi Letzter published
The idea that interstellar object 'Oumuamua is a hydrogen iceberg has a flaw.
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