24 September 2015, 07:00 AM ET
The Mars Orbiter Mission (MOM) spacecraft, also known as Mangalyaan, arrived at the Red Planet on the night of Sept. 23, 2014 (Sept. 24 GMT and Indian Standard Time) — just two days after NASA's MAVEN probe reached Mars orbit.
23 September 2015, 04:55 PM ET
The winning images from the Insight Astronomy Photographer of the Year competition were announced last week, and the list is an awe-inspiring collection of celestial awesomeness.
23 September 2015, 04:34 PM ET
The Sunday evening eclipse is the last in a "tetrad" — a term for four total lunar eclipses happening at six-month intervals — that has been stunning skywatchers across the United States for the past 18 months,
23 September 2015, 04:31 PM ET
The Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft arrived in orbit around the Red Planet on Sept. 21, 2014, 10 months after blasting off from Florida's Cape Canaveral Air Force Station.
23 September 2015, 04:08 PM ET
Five teams, ranging from university students to a group of engineers dispersed across the country, received $20,000 each from NASA in the first milestone of a competition to develop deep space cubesat technologies.
23 September 2015, 02:29 PM ET
The most luminous galaxies in the universe likely formed slowly via gradual accretion of gas, rather than rapidly via mergers with other galaxies, new research suggests.
23 September 2015, 01:42 PM ET
This Sunday night moon observers have the chance to see a lunar triple treat, weather permitting. Not only is it a Harvest Full Moon, but also a so-called supermoon and total lunar eclipse.
23 September 2015, 01:01 PM ET
Observations by the European Space Agency's Rosetta spacecraft show that surface ice on Comet 67P/Churyumov-Gerasimenko, which Rosetta has been orbiting since August 2014, appears and disappears on a daily cycle tied to illumination by the sun.
23 September 2015, 11:23 AM ET
Timothy "TJ" Creamer, who this week joined the ranks of Chris Kraft and Gene Kranz as one of NASA's newest flight directors, is no stranger to Mission Control. Creamer is the first astronaut to be named a flight director in the history of U.S. human space
23 September 2015, 09:41 AM ET
Future residents of the Moon’s Nearside will be treated to a 'fire-ringed' Earth during lunar eclipse totality (as Earth's shadow completely envelops the Moon, turning it "blood red").
23 September 2015, 07:17 AM ET
As you settle in Sunday night to watch the supermoon lunar eclipse, kick back with some moon tunes as chosen by Space.com's staff.
23 September 2015, 07:15 AM ET
After spending more than two years in a weightless environment, whiskey distillate on the International Space Station tastes different from control samples on Earth, a whiskey company reported.
23 September 2015, 07:11 AM ET
The dark, fingerlike features that creep down steep Martian slopes in warm weather continue to puzzle scientists, and generate debate about the best ways to investigate the features.
23 September 2015, 07:00 AM ET
Omega Nebula, Swan Nebula, Checkmark Nebula, Horseshoe Nebula, Lobster Nebula — whatever you call it, the spectacular star-forming Messier 17 sparkles in a new photo.
23 September 2015, 06:00 AM ET
Swan, Omega, Horseshoe, Checkmark, Lobster and the names don't end there for Messier 17 (its proper astronomical designation). Located 5500 light-years from Earth in the Sagittarius constellation.
22 September 2015, 05:30 PM ET
Buzz Aldrin set foot on the moon, and his new book encourages kids to take the first steps onto Mars.
22 September 2015, 05:24 PM ET
This weekend's rare supermoon total lunar eclipse offers a mix of risk and scientific opportunity for NASA's Lunar Reconnaissance Orbiter, which has been studying Earth's nearest neighbor up close since 2009.
22 September 2015, 04:00 PM ET
A spectacular photo of Saturn's night side and its rings plus a glimmer of moon, from the Cassini spacecraft, shows just how dark the planet can get.
22 September 2015, 04:00 PM ET
See images of the ringed planet from NASA's Cassini spacecraft in orbit around Saturn.
22 September 2015, 12:47 PM ET
A new video called "To Scale: The Solar System" does its best to teach viewers just how vast our cosmic backyard really is, by creating a scale model of Earth's neighborhood in Nevada's Black Rock Desert.
22 September 2015, 12:44 PM ET
It is not unusual, given NASA's presence in the community, to hear of people in Houston sing the virtues of space exploration. Those voices though, do not often take the form of an opera. That will change with the Houston Grand Opera's premiere of "O Colu
22 September 2015, 08:00 AM ET
Here's a skywatching guide for the Sept. 27 "supermoon" total lunar eclipse — the first such event since 1982, and the last until 2033.
22 September 2015, 07:47 AM ET
Simulations suggest that Saturn's north polar hexagon is shaped by shallow jets at the cloud level. Winds below the cloud level apparently help keep the shape of the hexagon sharp and control the rate at which the hexagon drifts.
22 September 2015, 07:41 AM ET
On Thursday (Sept. 17), officials with NASA and the U.S. Agency For International Development (USAID) showcased the ways satellite data helps developing countries manage their resources and deal with natural disasters.
21 September 2015, 05:25 PM ET
Could genes determine what makes a good astronaut? How does spaceflight impact the human genome? The one-year mission aboard the International Space Station may start unearthing answers.
21 September 2015, 04:46 PM ET
Last weekend, astronaut Scott Kelly answered questions on Twitter about life in space, including how astronauts bathe, do laundry and exercise, and how he's liking his one-year stay in orbit.
21 September 2015, 04:30 PM ET
The new Pluto animation stitches together images captured by NASA's New Horizons spacecraft during its historic flyby on July 14, which returned the first-ever up-close looks at the faraway dwarf planet.
21 September 2015, 01:30 PM ET
Space travelers don't have to dream of flying, but Cosmonaut Mikhail Kornienko, up on the International Space Station, revealed his own bad dream of missing the flight back to space in a new video interview.
21 September 2015, 06:53 AM ET
With a week until the huge supermoon lunar eclipse, it's time to dust off your small telescopes and binoculars, track down an observatory event or webcast, or draft your invitations for a moon-cake party.
21 September 2015, 06:30 AM ET
Scientists are developing a mission concept that would send a probe flying through the plume created by the 100-odd geysers erupting from the south polar region of Saturn's ice-covered moon Enceladus.
20 September 2015, 04:37 PM ET
Jeff Bezos announced a new home for Blue Origin and NASA astronaut Scott Kelly reflected on having six more months in orbit. This is our roundup of the best space stories of the week, for Sept. 18, 2015.
19 September 2015, 12:30 PM ET
A new personalized children's book will take a trip to the International Space Station bearing the name of one lucky child on Earth.