The goal of ExoMars 2018 is to search for evidence of past or present martian life.
A famous shot by Ansel Adams inspired this photo by Daniel McVey.
The glow of a town and more-distant glow of the zodiacal light shine above an Australia lake. Even farther away is the arc of the Milky Way.
A fall day in Sweden. Photo by Jörgen Norrland Andersson.
Moon was rising and setting with the sun in the past few days. Now it’s far enough from the sun’s glare to be visible in the evening sky, shortly after sunset.
MAVEN is the first spacecraft dedicated to exploring the tenuous upper atmosphere of Mars. It entered orbit around Mars on September 21, 2014.
Astronaut photo of rainforest being cleared for agriculture in Brazil.
This beautiful comet may be visible with the eye alone around mid-October, but it’ll remain much easier to detect using binoculars or a telescope.
Because of the small size of water droplets in fog, a fogbow might have only very weak colors, or no color at all. Colorless fogbows are sometimes called white rainbows.
Astronauts aboard the International Space Station, flying at 350 kilometers (220 miles) up, are ideally placed to observe elusive polar mesospheric clouds.
Hurricane Odile tied Olivia (1967) as the strongest hurricane to make landfall in Baja California in the satellite era.
The Curiosity rover on the floor of the Gale Crater caught this image of Mars’ larger moon Phobos passing in front of the sun on August 8, 2014.
Next time you see crepuscular rays extending from a sunset … turn around. Look opposite the the sun. You might catch a glimpse of elusive anticrepuscular rays.
Two powerful storms on the sun this week resulted in beautiful displays of the aurora borealis, or northern lights, that dipped down as far as the northern U.S.
This past full moon was the Northern Hemisphere’s Harvest Moon, known for appearing entirely or nearly full for several nights in a row.
A mesmerizing view down a long, straight stretch of road, with a wild sky above.
In case you missed it! Photos of the 2014 Harvest Moon from EarthSky friends.
Reflections of the moon and the Milky way in a pond atop Independence Pass in Colorado’s Rocky Mountains
Astrophotographer Justin Ng has just returned from Mount Bromo. Here’s what a night on an active volcano in Indonesia looks like.