11 November 2015, 01:00 PM ET
A planet close to its parent star is hot like Venus, but rotates quickly and could have a substantial atmosphere.
29 October 2015, 07:49 AM ET
Spoiler Alert! Here's the complicated math problems Mark Watney has to solve in order to survive in "The Martian."
27 October 2015, 05:25 PM ET
Since 2004, the Cassini space probe has orbited Saturn, collecting photos and data that have revolutionized our understanding of the planet and its moons.
21 October 2015, 01:00 PM ET
Astronomers group stars into classes according to spectral color and brightness.
19 October 2015, 05:34 PM ET
Are we the only intelligent life in the universe? Here's how we intend to find out.
15 October 2015, 07:00 AM ET
Astronomers have developed some clever methods of detecting tiny planets orbiting distant stars.
09 October 2015, 04:57 PM ET
Is time travel possible? Are the past and future set or can they be changed? Sci-fi books and films have long explored these ideas.
30 September 2015, 05:46 PM ET
In the film "The Martian" (2015), an astronaut played by Matt Damon has to improvise when his crew leaves him behind by accident. Here's a look at what Watney would need to stay alive on Mars.
28 September 2015, 03:53 PM ET
After decades of speculation, scientists now know for sure that liquid, salty water flows on the surface of Mars. See what the discovery means in our infographic.
18 September 2015, 09:29 AM ET
A series of four total lunar eclipses in a row is called a tetrad, or four Blood Moons. See how lunar eclipse tetrads work in this infographic.
18 September 2015, 07:27 AM ET
Learn what makes a big full moon a true 'supermoon' in this infographic.
16 September 2015, 05:45 PM ET
Daredevil sungrazing comets risk annihilation every time they skim the surface of our star. Here's how the Solar and Heliospheric Observatory tracks these comet interlopers.
15 September 2015, 03:26 PM ET founder Jeff Bezos leads Blue Origin, a commercial aerospace firm that hopes to send people on suborbital and orbital space trips.
11 September 2015, 09:29 AM ET
What makes the moon turn dark and red? Find out in this infographic.
11 September 2015, 09:29 AM ET
How Solar Eclipses Work: When the moon covers up the sun, skywatchers delight in the opportunity to see a rare spectacle.
13 August 2015, 02:00 PM ET
A planet only 20 million years old and still hot from its creation has been photographed in a solar system 96 light-years from Earth.
30 July 2015, 02:00 PM ET
Scientists have released new information about comet 67p and what the Philae lander discovered there.
23 July 2015, 02:43 PM ET
Astronomers have announced the discovery of planet Kepler-452b, orbiting a star very much like the sun but older and hotter.
17 July 2015, 07:00 AM ET
Hardware developed for the race to the moon was used to foster collaboration between the two countries.
17 June 2015, 01:00 PM ET
A permanent cloud of dust has been found hovering around the moon, caused by the impacts of tiny particles from deep space.
17 June 2015, 01:00 PM ET
By studying data from the Kepler probe, scientists have found a planet about the size of Mars, about 200 light-years away from Earth.
02 June 2015, 01:34 PM ET
Paving the way for Apollo's missions to the moon, the Gemini program provided much-needed experience for astronauts in space.
02 June 2015, 12:26 PM ET
When Alexei Leonov stepped out of his Voskhod 2 capsule on March 18, 1965, he became the first spacewalker ever.
11 May 2015, 07:21 AM ET
For years, tiny payloads have been launched into Earth orbit on satellites smaller than a loaf of bread.
09 May 2015, 10:45 AM ET
At last humans are able to make educated guesses about what living on alien worlds might be like. Here's what we know about the alien planet Kepler-186f.
29 April 2015, 12:14 PM ET
For more than 50 years, spacecraft have relied on rockets and tricky maneuvers to get out of danger when missions don't go as planned.
13 April 2015, 07:15 AM ET
After an explosion crippled the spacecraft, the three astronauts had to fight to make their way back to Earth.
07 April 2015, 01:30 PM ET
Halley's Comet, a dusty ball of ice and frozen gases, spends most of its time in the chilly outland of the solar system. See what it would be like to live on a comet in this infographic.
31 March 2015, 11:10 AM ET
Pluto was considered a planet until 2006, when it was reclassified as a dwarf planet.
30 March 2015, 07:00 AM ET
New Horizons becomes the first probe to explore Pluto in mid-2015.
26 March 2015, 08:00 AM ET
An astronaut and a cosmonaut spend an entire year aboard the ISS to provide data on the health implications of space travel.
24 March 2015, 06:06 PM ET
Opportunity completed the distance covered in the traditional footrace.