20 July 2014, 07:01 AM ET
On July 20, 1969, Neil Armstrong clambered down the ladder of the Apollo 11 lunar lander and pressed his boot into the moon's gray dirt — a simple step that stands as perhaps the most memorable moment in all of human history.
20 July 2014, 12:57 AM ET
What was your favorite space news story of the last week?
19 July 2014, 12:31 PM ET
From a cosmic rubber ducky to an experimental space plane, don't miss these amazing space images of the week for July 19, 2014.
19 July 2014, 07:51 AM ET
On July 19, 1969, the third day of NASA's Apollo 11 moon landing mission, astronauts Neil Armstrong, Buzz Aldrin and Michael Collins made their fourth TV broadcast of the flight. This time, from near the moon.
19 July 2014, 07:15 AM ET
The moon is a tough place to explore. It's several days away from Earth. Solar radiation sears the moon's surface. Its gravity is lumpy, and there is no atmosphere to protect astronauts from the elements. See how NASA handled risk during Apollo 11 and oth
18 July 2014, 08:19 PM ET
Naturally occurring pits and tubes, caused by ancient movement of molten rock, could provide safe harbor against meteorites, thermal shock, radiation and dust. This idea has been studied for 3 decades, but LRO images have now found real candidates.
18 July 2014, 05:34 PM ET
New York City is crawling with space fans young and old this week. The Intrepid Sea, Air & Space Museum in Manhattan is hosting a festival
18 July 2014, 03:36 PM ET
Diagrams and NASA artwork show how Apollo astronauts flew to the moon.
18 July 2014, 02:38 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.
18 July 2014, 12:40 PM ET
After refusing to fire its engines last week for a course correction, a vintage NASA spacecraft did produce a bit of thrust Wednesday (July 16), proving it still has at least some fuel left after 36 years in space.
18 July 2014, 11:48 AM ET
Astronaut Hank Hartsfield, who commanded space shuttle Discovery's first flight, died on July 17, 2014. He was 80. Hartsfield logged a total of 483 hours in space, circling the Earth 321 times on three space shuttle missions.
18 July 2014, 11:00 AM ET
Fragments of Comet Shoemaker-Levy 9 struck planet Jupiter in July 1994.
18 July 2014, 10:26 AM ET
On the second day of their historic mission to land on the moon for the first time, the Apollo 11 crew of Neil Armstrong (commander), Mike Collins (command module pilot) and Buzz Aldrin (lunar module pilot) received a small gift from Mission Control.
18 July 2014, 07:00 AM ET
The European Space Agency's Rosetta probe has gotten its best look yet at Comet 67P/Churyumov-Gerasimenko, with which it will rendezvous early next month. And the results are surprising, researchers said.
18 July 2014, 01:31 AM ET
Mount Wilson Observatory is a Los Angeles-area facility with several telescopes open to astronomers and the public.
17 July 2014, 06:12 PM ET
Following a flawless launch the day before, the Apollo 11 crew continued their historic journey to the moon on July 17, 1969. Landing at the Sea of Tranquility was scheduled for July 20.
17 July 2014, 06:01 PM ET
Astrophotographer John Chumack captured the dwarf planet Pluto among the star fields of Sagittarius.
17 July 2014, 05:36 PM ET
Stargazers looking for the moon at nightfall may be wondering where Earth's nearest neighbor is in the night sky. Here's a handy guide to observing the moon in binoculars and telescopes in the late-night July sky.
17 July 2014, 05:02 PM ET
Filmmaker Rod Pyle compiles footage from July of 1969 in commemoration of the mission that put the first bootprints on the moon. The title is taken from President John F. Kennedy's so-called "moon speech" of 12 September 1962.
17 July 2014, 04:00 PM ET
From July 16 to 22, 1994, more than 20 fragments of the comet Shoemaker-Levy 9 pelted Jupiter's atmosphere. It marked the first time humans had witnessed a collision between two bodies in the solar system.
17 July 2014, 03:48 PM ET
Imaged on 14 July 2014 by OSIRIS, Rosetta’s scientific imaging system, this movie compiles 36 interpolated images each separated by 20 minutes, providing a 360° preview of the complex shape of the comet.
17 July 2014, 10:12 AM ET
General Electric is taking a 'small step' into sneaker design to commemorate the role — or rather, sole — it had in making mankind's first 'giant leap' on the moon. The company will offer its moon boot-inspired sneakers 45 years to the day after the firs
17 July 2014, 09:46 AM ET
The first moon landing, 45 years ago on Sunday (July 20), didn't just define a decade, it set a new chapter in human history. That Apollo 11 moon landing, and the U.S.-Soviet Union Space Race that led up to it, star in CNN's 'The Sixties' tonight July 17.
17 July 2014, 07:00 AM ET
Experts told a Senate hearing Wednesday that key American national-security space missions could be delayed by four to six years if Russia decides to cut off its supply of RD-180 rocket engines.
17 July 2014, 06:50 AM ET
On July 12, for the first time ever, Curiosity photographed sparks flying from a rock blasted by the 1-ton robot's laser-sampling instrument, known as ChemCam. You can watch a video of the laser flashes here.
17 July 2014, 12:39 AM ET
'Space tourism' is a catch-all term that encompasses three different ideas of what the industry could look like.
16 July 2014, 11:51 PM ET
Where is humanity in the search for planets beyond our solar system, and what will the next decade bring?
16 July 2014, 11:12 PM ET
A lone tree, 16 shots, and a stunning view of the Milky Way.
16 July 2014, 10:53 PM ET
This space wallpaper is a deep-field image obtained using the Wide Field Imager (WFI), a camera mounted on a relatively modestly sized telescope, the MPG/ESO 2.2-metre located at the La Silla Observatory, Chile.
16 July 2014, 05:26 PM ET
“Dr. Rendezvous” talks with Space.com about moonwalking, seeing Earth from Tranquility Base (and how the spacesuit restrained him from doing so) and the inside story of landing on Moon. -- Excerpt from Space.com Google+ Hangout: http://goo.gl/xJktMk
16 July 2014, 05:24 PM ET
The 2014 Astronomy Photographer of the Year competition has announced its shortlist of finalists.
16 July 2014, 05:00 PM ET
The Mars Science Laboratory's ChemCam instrument fires its laser at rocks to analyze its composition and clear away dust. A recent firing produced sparks when hitting a rock.