22 July 2014, 11:09 AM ET
NASA Fermi Gamma-ray Space Telescope detected a never-before-seen change in a binary star system in the constellation Sextants. The pulsar ceased its radio ‘beacon’ but started bright gamma ray emissions. This animation explains the behavior.
22 July 2014, 09:25 AM ET
Star Wars Episode VII director, J.J. Abrams is giving fans yet another sneak peak at what lies ahead in the new trilogy. Check out an upgrade on an old cornerstone piece of the Star Wars franchise.
22 July 2014, 07:47 AM ET
On July 22, 1969, the three men on NASA's Apollo 11 mission were in the homestretch of their historic moon voyage. See how they fired the engines on their spacecraft.
22 July 2014, 07:01 AM ET
The newly discovered exoplanet Kepler-421b — which crosses the face of, or transits, its host star from Earth's perspective — takes 704 days to complete one orbit. Thus, it has the longest year known for any transiting alien world.
22 July 2014, 07:00 AM ET
The second Hawaii Space Exploration Analog and Simulation mission, known as Hi-SEAS 2, wraps up on Friday (July 25), ending four months of simulated Red Planet exploration on Hawaii's Mauna Loa volcano.
21 July 2014, 05:05 PM ET
Actor Morgan Freeman grilled NASA astronauts on the International Space Station about how their work can get humans to Mars someday.
21 July 2014, 04:09 PM ET
NASA honored the memory of Apollo 11 commander Neil Armstrong Monday (July 21), naming the Operations and Checkout building at the Kennedy Space Center in Florida after the first man on the moon.
21 July 2014, 03:40 PM ET
NASA's Apollo 11 moon landing was a human spaceflight feat, but also a dangerous journey. See some of the scariest moments of first manned moon landing as described by space historian and science writer Rod Pyle, author of 'Destination Moon.'
21 July 2014, 03:07 PM ET
What does the site of the first moon-landing look like 45 years later? A NASA probe orbiting the moon has recently beamed back new images of what Apollo 11's Tranquility Base looks like now.
21 July 2014, 12:44 PM ET
Astronaut Kathy Sullivan poses for a picture with her space suit.
21 July 2014, 12:22 PM ET
A high-flying package of live animals, plant seeds, and materials samples shot into space Friday (July 18) aboard a retrievable Russian Foton satellite, launching a two-month mission focusing on microgravity research into biological and physical sciences.
21 July 2014, 09:35 AM ET
NASA's Lunar Reconnaissance Orbiter (LRO) snapped imagery of the site where humanity took their first steps on the moon. An animator combined the photograph with a terrain map to create a 3D model of the Lunar Module (LM) descent stage.
21 July 2014, 09:00 AM ET
A dropship quadcopter designed by the European Space Agency could be landing rovers on Mars in the future.
21 July 2014, 08:40 AM ET
When U.S. astronauts make the next 'giant leap' launching to Mars, they will bring with them a memento from the first moon landing 45 years ago. NASA is presenting Kennedy Space Center with a mission patch flown on Apollo 11 for the first Mars crew.
21 July 2014, 07:17 AM ET
After 21.5 hours on the moon, Apollo 11 astronauts Neil Armstrong and Buzz Aldrin blasted off from the lunar surface on July 21, 1969 to rejoin their crewmate Michael Collins in orbit.
21 July 2014, 07:01 AM ET
What does the future of moon exploration look like? Will it be lunar colonies and manned moon bases, or a desolate lunar surface devoid of human life? National and private efforts hold the key.
20 July 2014, 11:18 AM ET
The Slooh Community Observatory and NASA will broadcast two free webcasts to mark the Apollo 11 moon landing's 45th anniversary tonight (July 20). Slooh will webcast live views of the moon at 8:30 pm ET/0030 GMT. NASA will stream moonwalk video later.
20 July 2014, 09:01 AM ET
Space.com was founded on July 20, 1999 on the 30th anniversary of NASA's Apollo 11 moon landing. Here, managing editor Tariq Malik recounts the last 15 years of Space.com, and the wonder of it all.
20 July 2014, 08:31 AM ET
The 45th anniversary of NASA's Apollo 11 moon landing is today (July 20) and just might have space fans round the world wondering what it would be like to walk on the moon. The Girl Scouts of America, it turns out, has gone even farther.
20 July 2014, 07:25 AM ET
It was the main event: On July 20, 1969, NASA's Apollo 11 crew touched their Eagle lander down on the lunar surface. Here's how Neil Armstrong, Buzz Aldrin and Michael Collins did it.
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.