03 August 2012, 02:50 PM ET
Mars' atmosphere is too thin to support life as we know it. And it's very dusty. The red planet has the largest dust storms in the solar system.
03 August 2012, 11:13 AM ET
Mars is made of minerals, metals and other elements.
02 August 2012, 05:48 PM ET
Mars is a moving target, so giving an exact distance from Earth depends on several factors.
02 August 2012, 03:16 PM ET
Mars is the second smallest planet in the solar system. Here are Mars’ diameter, mass and other size measurements
01 August 2012, 10:58 AM ET
Many cultures have recognized this constellation as the Lion.
31 July 2012, 11:11 AM ET
The world's greatest flying machines helped humans not only get off the ground, but also fly into space.
30 July 2012, 02:12 PM ET
The constellation Gemini is easy to spot in the northeastern sky.
30 July 2012, 11:25 AM ET
Ten of the greatest moments in flight took humans from flying in hot-air balloons to stepping foot on the moon.
27 July 2012, 04:12 PM ET
The space shuttle program paved the way for missions that extend farther out into the solar system and beyond.
27 July 2012, 10:51 AM ET
The V-22 Osprey takes off like a helicopter and flies like an airplane.
26 July 2012, 01:37 PM ET
Salyut 1, the first space station, paved the way for future manned orbital platforms.
25 July 2012, 03:39 PM ET
Millions of people watched as Neil Armstrong took the first steps on the moon.
25 July 2012, 02:59 PM ET
Sally Ride was the first American woman to go into space.
25 July 2012, 01:32 PM ET
One of the dragon constellation's stars used to be the North Star
25 July 2012, 11:31 AM ET
The ISS is the most complex scientific and technological endeavor ever undertaken.
24 July 2012, 06:25 PM ET
Pegasus has some interesting galaxies and deep-space objects.
24 July 2012, 02:00 PM ET
The Russians won an early victory in the space race when they launched Yuri Gagarin into orbit.
23 July 2012, 04:43 PM ET
In 1947, pilot Chuck Yeager flew faster than the speed of sound, and also created the first sonic boom.
23 July 2012, 11:44 AM ET
To get astronauts to the moon, scientists built the largest rocket ever.
20 July 2012, 05:08 PM ET
Charles Messier compiled a catalog of more than 100 fuzzy objects, known as nebulae.
20 July 2012, 01:27 PM ET
"Lucky Lindy" electrified the world and changed public opinion about air travel.
20 July 2012, 10:00 AM ET
A stealthy, supersonic spy plane from the Cold War set world speed and altitude records for manned jet aircraft.
19 July 2012, 04:46 PM ET
The Orion constellation is one of the most prominent star patterns in the sky.
19 July 2012, 01:00 PM ET
The first scheduled passenger airline service took off from St. Petersburg, Fla.
19 July 2012, 10:00 AM ET
Nazi Germany's Me 262 fighter jet influenced later generations of U.S. military aircraft as the world's first operational turbojet aircraft.
18 July 2012, 02:00 PM ET
The Wright Brothers’ first plane flight in Kitty Hawk lasted just 12 seconds in 1903, but Orville and Wilbur made history in that airplane, the Flyer
18 July 2012, 10:00 AM ET
The zeppelin Hindenburg represented the largest aircraft to ever fly before it met a fiery end in the disaster bearing its name.
17 July 2012, 01:27 PM ET
For lighter-than-air travel to get anywhere, a way to control the balloons had to be invented.
17 July 2012, 09:00 AM ET
World War I transformed aircraft into flying weapons and harnessed aviation technology to the military.
16 July 2012, 09:32 AM ET
The 1903 Wright Flyer that made history's first flight included propellers and wire controls.
16 July 2012, 09:16 AM ET
The Montgolfier brothers launched the first flight of a hot-air balloon in 1783.
11 July 2012, 12:12 PM ET
Using the Hubble Space Telescope, astronomers have discovered a fifth moon orbiting the dwarf planet.