24 July 2014, 05:36 PM ET
Four astronauts are currently living in a school-bus-size habitat that is anchored 62 feet (19 meters) underwater for a nine-day mission to test tech for future space expeditions.
23 July 2014, 12:29 AM ET
A lone tree, 16 shots, and a stunning view of the Milky Way.
23 July 2014, 12:19 AM ET
The VLT Survey Telescope at ESO's Paranal Observatory in Chile has captured this richly detailed space wallpaper of the Lagoon Nebula. This giant cloud of gas and dust is creating intensely bright young stars, and is home to young stellar clusters.
22 July 2014, 03:14 PM ET
Created by lightning, ‘whistlers’ travel along Earth's magnetic field lines from hemisphere to hemisphere. Jupiter’s charged particles ‘sing’ across its magnetosphere (recorded by Voyager).
-- 'Whistling' Volcanic Lightning: http://goo.gl/kKhlEk
22 July 2014, 11:10 AM ET
Four astronauts traded in their spacesuits for scuba gear yesterday (July 21) and embarked on a nine-day mission at the bottom of the sea as part of NASA's Extreme Environment Mission Operations (NEEMO) project.
21 July 2014, 03:33 PM ET
Scientists searching for planets where E.T. may live have homed in on places where liquid water could exist. But a livable world may require not just water, but oceans, a new study suggests.
21 July 2014, 11:41 AM ET
The astronauts who first walked on the moon also got some beautiful views of Earth during their journey. A 'Blue Marble' Earth image from July 16, 1969 shows the planet on the day of Apollo 11's launch.
19 July 2014, 09:37 AM ET
The biggest laser in the world was used to crush a diamond, offering insights into how the hardest known material behaves when it is exposed to extremely high pressures. The experiment could also reveal new clues about the cores of giant planets.
18 July 2014, 05:05 PM ET
When a missile struck Malaysian Airlines flight MH17, it's likely that heat from the explosion was detected from space by a sophisticated network of military satellites.
15 July 2014, 06:14 PM ET
A new unmanned military space plane is being developed to launch small satellites into orbit and serve as a test bed for a futuristic fleet of hypersonic vehicles.
15 July 2014, 10:40 AM ET
For the first time in history, humanity is within reach of finding Earth-like planets where life exists, but these extraterrestrials may not take the form of intelligent beings, experts say.
15 July 2014, 12:06 AM ET
A comet-galaxy conjunction is a rare opportunity for amateur astronomers.
11 July 2014, 03:43 PM ET
You might want to step outside tomorrow night (July 12), when a bulging "supermoon" will rise in the evening sky. The event coincides with Manhattanhenge, when the setting sun will align along the east-west streets in the grid of Manhattan.
11 July 2014, 12:19 AM ET
This space wallpaper is an artist's illustration showing one of three newly discovered planets in the star cluster Messier 67. Image released Jan. 15, 2014.
09 July 2014, 03:11 PM ET
Two satellite images show how the Brazilian city of Sao Paulo has grown over two decades, with spreading suburbs and new ring roads.
08 July 2014, 12:01 PM ET
The huge swirling storm was captured from space by a NASA satellite on July 7, as it churned toward Okinawa.
08 July 2014, 07:29 AM ET
A hotspot of ultrahigh-energy cosmic rays has been found in the vicinity of the Big Dipper, though the source of the rays remains a mystery.
08 July 2014, 02:10 AM ET
This new Hubble image shows a cosmic creepy-crawly known as the Tarantula Nebula in infrared light. This region is full of star clusters, glowing gas, and thick dark dust. Image released Jan. 9, 2014.
07 July 2014, 03:30 PM ET
Water could have flowed on the surface of Mars with the help of salts in the Martian soil that can melt ice, just as salts on Earth can be used to melt ice on slippery winter roads and sidewalks, researchers say.
06 July 2014, 02:33 PM ET
Researchers have figured out a new way to predict which rivers are most at risk of dangerous flooding.
02 July 2014, 07:49 PM ET
Tropical Storm Arthur appears menacing as it bears down on the coast of Florida, in this photo captured today (July 2) by astronauts aboard the International Space Station.
01 July 2014, 05:23 PM ET
Sailing the soupy atmosphere of Titan, Saturn's largest natural satellite, an interplanetary balloon could one day release a small drone to explore the moon's swamp-like surface.
27 June 2014, 08:31 AM ET
A strange meteorite from Sweden is a new kind of space rock never before seen on Earth, a study reports. The baseball-sized gray blob could be the long-sought "other half" of an asteroid belt collision 470 million years ago.
26 June 2014, 11:46 PM ET
This fascinating space wallpaper is an artist's concept of the MWC 656 system, which consists of a massive "Be" star and a companion black hole.
23 June 2014, 07:14 PM ET
A student-led project aims to send a time capsule to Mars for future explorers to discover, its organizers announced today (June 23).
23 June 2014, 12:59 PM ET
City lights, the aurora, the moon and a beautiful blue glow from the atmosphere create a gorgeous show in a new astronaut photograph of Russia.
23 June 2014, 09:31 AM ET
NASA Cassini mission images from July 2013 of Titan's Ligeia Mare region show an island that was not there in previous imagery. What could it be?: http://goo.gl/f0hNPs
23 June 2014, 12:24 AM ET
This space wallpaper is a Hubble image showing the scatterings of bright stars and thick dust that make up spiral galaxy Messier 83, otherwise known as the Southern Pinwheel Galaxy.
22 June 2014, 01:06 PM ET
Saturn's largest moon Titan, dotted with hydrocarbon lakes and covered in a hazy atmosphere, comes to life in these stunning images captured by instruments aboard NASA's Cassini spacecraft.
22 June 2014, 01:00 PM ET
Scientists find the first hint that Titan's methane and ethane lakes may be stirring in response to the summer warmth, similar to lakes on Earth.
21 June 2014, 09:02 AM ET
The night sky never looked so inviting. From light rays framing the Big Dipper above the Alps to the eerily stunning aurora hovering atop Norway, the winners of a dark skies photo contest delight with their upward gazes.
19 June 2014, 02:28 PM ET
In 2013, astronomers became aware the center of galaxy NGC 5548 had seemingly gone dark. Astrophysicist Jelle Kaastra and team now think they know why: a stream of obscuring gas blown by the action of the central supermassive black hole.