Icarus

'Dark comets,' which have no visible tail, could also explain the strange behavior of the interstellar object 'Oumuamua.

A new analysis of data from NASA's New Horizons mission shows Pluto's ocean is just a little denser than seawater on Earth. You could easily float in it. The post Pluto's ocean is super salty, scientists say first appeared on EarthSky.

Plans for Perseverance to explore past crater rim may be in jeopardy

Methane detected near dwarf planets Eris and Makemake could have come from within their interiors, produced by geochemical reactions amid hot rock.

The first journal article about clouds identified by participants of the Cloudspotting on Mars project has been accepted for publication and is now available online! The article, "The Cloudspotting on Mars citizen science project: Seasonal and spatial cloud distributions observed by the Mars Climate Sounder" will appear in a special issue of Icarus titled "MRO: 16 Years at Mars". […]

Four years ago, astronomers noticed the abundant clouds on Neptune had largely disappeared. Telescope data may have helped researchers figure out why.

Thanks to the sun's 11-year-long cycle, Neptune might be systematically purged of its clouds.

Invisible cloaks. Ghost imaging. Scientists are manipulating light in ways that were once only science fiction.

Saturn's rings are much younger than we thought.

Saturn's ring system may well have formed when dinosaurs were still walking on the Earth, and will last only another few hundred million years at most, according to two new studies published in the journal Icarus.

It's probably a matter of when and how, not if, we humans will meet our doom

The newly-released map shows the locations and abundances of secondary minerals formed through interaction with water on Mars.

The rock likely formed from the merging of dust with the remnants of the two stars involved in the explosion.

The most distant known star in the universe is named Earendel, after a character from Tolkien's The Silmarillion. We spoke to the scientist who discovered it to find out why.

Designated WHL0137-LS and nicknamed Earendel, the newly-detected star emitted its light around 900 million years after the Big Bang.

Its swift demise makes it all the more incredible that an international team spotted it with observations by the Hubble Space Telescope. It takes eons for...

No meteorites required.

This year, from Earth's perspective, Saturn's rings will appear nearly edge on, making them almost invisible

Dark comets, which are cross between an asteroid and comet, can make up as much as 60 percent of near-Earth objects.

NASA has revealed new information about the star Earendel, which scientists say is now 28 billion lightyears away.