06 March 2015, 12:00 AM ET
If all goes according to plan on Friday morning (March 6), Dawn will become the first spacecraft ever to visit a dwarf planet, and the first to circle two different objects beyond the Earth-moon system.
05 March 2015, 05:30 PM ET
See amazing images of the night sky and cosmos in SPACE.com's gallery of cosmic images posted in February 2015.
05 March 2015, 07:18 AM ET
While NASA's Dawn probe will soon begin the first in-depth examination of Ceres, astronomers have learned a bit about the dwarf planet already. Here are seven weird facts about Ceres.
05 March 2015, 07:00 AM ET
The European Space Agency's Rosetta spacecraft took the picture during a close flyby of Comet 67P/Churyumov-Gerasimenko on Feb. 14, when the sun, spacecraft and comet were all neatly aligned.
04 March 2015, 01:50 PM ET
Two astronauts in space said goodbye to a science fiction legend on Earth by beaming back striking photos from the International Space Station.
04 March 2015, 07:19 AM ET
NASA is celebrating the 100-year anniversary of its predecessor, NACA — the National Advisory Committee for Aeronautics — and you can watch the celebration live online today (March 4).
04 March 2015, 07:00 AM ET
The Dawn mission's unprecedented deep-space feats are enabled by the probe's innovative propulsion system, which is about 10 times more efficient than traditional chemical thrusters, NASA officials say.
03 March 2015, 07:19 PM ET
Comet 67P/Churyumov–Gerasimenko is a small body visited by the Rosetta spacecraft in the first mission to land on a comet.
03 March 2015, 03:11 PM ET
When U.S. astronauts next launch to space from Florida, the control team that oversees their liftoff may celebrate with the traditional crock of beans. If so, they'll be honoring the legacy of test director Norm Carlson, too.
03 March 2015, 02:00 PM ET
Put six people into an isolated environment for months at a time, and lots of things can happen: frustration, conflict, or at best — a tight-knit group of people working happily for a common goal.
03 March 2015, 12:45 PM ET
Jupiter's moon Europa suffers from extreme cold and deadly radiation, but its astronomical and geological sights are unique in the solar system.
03 March 2015, 12:00 PM ET
Scientists believe conditions may be right for life, under Europa's icy crust.
03 March 2015, 07:45 AM ET
NASA's Dawn will investigate Ceres' bright spots and other mysteries after it enters orbit around the dwarf planet at about 7:20 a.m. EST (1220 GMT) on Friday (March 6).
03 March 2015, 07:00 AM ET
While investigators continue to study the dramatic Feb. 3 death of the DMSP-F13 satellite, signs currently point to failure of the power system aboard the spacecraft, which launched in 1995.
02 March 2015, 05:19 PM ET
F. Curt Michel, an astrophysicist who was among NASA's first scientist-astronauts but who resigned after it became clear he would not fly to the moon, died Feb. 23, 2015. He was 80.
02 March 2015, 04:01 PM ET
A 20-year-old military weather satellite apparently exploded in orbit Feb. 3 following what the U.S. Air Force described as a sudden temperature spike.
02 March 2015, 04:00 PM ET
NASA's Dawn probe is scheduled to slip into orbit around Ceres — the largest object in the main asteroid belt between Mars and Jupiter — at 7:20 a.m. EST (1220 GMT) Friday, wrapping up a deep-space chase that lasted two-and-a-half years.
02 March 2015, 03:40 PM ET
Inserted into Ceres orbit on March 6th, 2015, the Dawn mission has been sending progressively better imagery to Earth since December 2014. Ceres is by far the largest body in the Main Belt of asteroids.
02 March 2015, 02:20 PM ET
The private spaceflight company SpaceX launched a pair of communications satellites to space yesterday (March 1), and you can see amazing videos and photos of the liftoff.
02 March 2015, 11:28 AM ET
The ABS 3A and EUTELSAT 115 West B satellites were launched from Cape Canaveral Air Force Station on Mar. 1st, 2015.
02 March 2015, 07:00 AM ET
Russia says it will support U.S. plans to keep the International Space Station operating through 2024, but then wants to split off three still-to-be launched modules to form a new orbital outpost.
01 March 2015, 02:46 PM ET
The International Space Station is now three steps, or rather spacewalks, closer to being ready for the arrival of new U.S. commercial crewed spacecraft with the completion of a trio of two-astronaut excursions.
01 March 2015, 12:41 PM ET
Astronomers discovered the most gigantic black hole yet known and Leonard Nimoy — Mr. Spock from the beloved "Star Trek" series — passed away at the age of 83. Here are Space.com's pics for the top space stories of the week.
01 March 2015, 11:25 AM ET
The countdown is on to the launch of Apollo 18 and you're invited to witness it from New York City's Times Square. 'Apollo XVIII' by artist Marco Brambilla weaves footage from NASA missions with computer renderings to form a countdown to a fictional moon
01 March 2015, 07:00 AM ET
Dawn is scheduled to reach Ceres — the largest body in the main asteroid belt between Mars and Jupiter — Thursday night. The probe has been headed for Ceres since September 2012, when it departed Vesta, the asteroid belt's second-biggest denizen.
28 February 2015, 03:32 PM ET
From a record-setting parafoil flight to a newly-tested space plane, don't miss these amazing space images of the week for March 1, 2015.
27 February 2015, 09:39 PM ET
NASA astronaut Mike Fincke and ESA astronaut Luca Parmitano talk about the inspiration that Star Trek's Mr. Spock delivered to humanity's on-going mission to explore.
27 February 2015, 07:00 AM ET
Inside New Horizons is a small piece of SpaceShipOne, the first privately owned and operated spacecraft to reach space twice within a period of 14 days. The feat, which SpaceShipOne accomplished in 2004, won the $10 million Ansari X Prize.
26 February 2015, 05:12 PM ET
NASA's Soil Moisture Active Passive mission team deployed its spacecraft's large antenna on Feb. 24th, 2015. The mission will track and map soil moisture on Earth.
26 February 2015, 01:38 PM ET
Going to Mars without setting up a colony — round-trip manned missions, in other words — would not be enough for the U.S. to reclaim its leadership in space, nor would setting up human outposts on the moon, Aldrin said.
26 February 2015, 08:08 AM ET
With an eye towards the future, NASA has marked the first 50 years of its two rocket-moving crawler-transporters by taking one of the newly-upgraded massive machines out for a test drive to the launch pad.
26 February 2015, 08:00 AM ET
Soviet-era cosmonaut Alexei Gubarev, who trained to fly to the moon but instead led the first multi-national space station crew, died on Feb. 21. He was 83. Gubarev logged 37 days in orbit during the Soyuz 17 and Soyuz 28 missions.