Science & Astronomy Archive
10 March 2015, 03:42 PM ET
Even 100,000 million miles away, NASA’s New Horizons probe has begun delivering unprecedented views. The mission's principal investigator Dr. Alan Stern tells Space.com just how much better the imagery will be.
10 March 2015, 03:00 PM ET
The star cluster is unique since it's located thousands of light-years away from the main disc of our galaxy.
10 March 2015, 12:19 PM ET
A constellation of four satellites orbit through Earth's magnetic field to study the mysterious phenomenon called magnetic reconnection.
10 March 2015, 11:12 AM ET
Spirit and Opportunity, the Mars rovers, have outlived and outlasted any spacecraft on the surface of the red planet. Take a look at some of their latest Mars photos.
10 March 2015, 08:30 AM ET
If a robot plunges into the ocean of an icy moon, perhaps near Saturn or Jupiter, its main problem will be figuring out what to do next. Even at light speed, it takes hours for communications to pass back and forth to Earth.
10 March 2015, 08:25 AM ET
Space.com recently caught up with Chris Russell, the principal investigator of NASA's Dawn mission, to discuss the protoplanet Vesta, the dwarf planet Ceres and what Dawn's legacy will be.
09 March 2015, 04:00 PM ET
Opportunity has paused to study some intriguing rocks just before its odometer ticks over to 26.2 miles (42.195 kilometers) — the equivalent of a marathon.
09 March 2015, 01:59 PM ET
Astronauts aboard the International Space Station will attempt to grow the fibrous plaque (amyloids) that are the root cause of the brain disease.
09 March 2015, 08:00 AM ET
The $600 million Kepler mission launched from Florida's Cape Canaveral Air Force Station on March 6, 2009. After a two-month commissioning phase, Kepler began searching for exoplanets — and began etching its name into the history books.
09 March 2015, 07:00 AM ET
The atmosphere of Saturn's huge moon Titan may have been generated within the satellite as a consequence of hydrothermal activity, Data from Europe's Huygens lander suggests.
09 March 2015, 07:00 AM ET
Our young sun may have routinely blasted Earth with gobs of energy more powerful than any similar bombardments recorded in human history.
08 March 2015, 12:48 PM ET
A powerful camera spotted a comet and scientists captured images of a supernova four different times. Here are Space.com's pics for the top space stories of the week.
07 March 2015, 02:34 PM ET
From an amazing photo of Comet Lovejoy captured by a dark energy camera to Comet 67P/Churyumov-Gerasimenko, don't miss these amazing space images of the week for March 7, 2015.
07 March 2015, 08:45 AM ET
NASA's Dawn probe has begun orbiting Ceres, but the spacecraft still has some traveling to do before it starts taking the dwarf planet's measure. The spacecraft won't begin science operations until late April.
06 March 2015, 10:20 PM ET
These two events will make 2015 an exciting year for solar system exploration and discovery. But there is much more to this story than mere science.
06 March 2015, 06:31 PM ET
The Feb. 27 short circuit that has halted some of the science work by NASA's Mars rover Curiosity, apparently originated in the robot's rock-boring drill, space agency officials announced Friday (March 6).
06 March 2015, 04:01 PM ET
Researchers scanning the atmospheres of exoplanets for gases produced by living creatures should hunt for more than just oxygen, methane and other "biosignatures" that swirl about in Earth's air, MIT's Sara Seager says.
06 March 2015, 10:00 AM ET
NASA's Dawn probe arrived at Ceres today (March 6) at 7:20 a.m. EST, becoming the first spacecraft ever to orbit a dwarf planet, and the first ever to orbit two celestial bodies beyond the Earth-moon system.
06 March 2015, 07:30 AM ET
The UN formally dissolved its Action Team 14, in recognition of the group's successful completion of its mandate to coordinate international mitigation efforts for near-Earth object (NEO) threats.
05 March 2015, 06:14 PM ET
An observatory will celebrate the planned arrival of a NASA spacecraft at Ceres by streaming live images of the dwarf planet live online Friday (March 6).
05 March 2015, 06:00 PM ET
NASA's Dawn spacecraft is getting humanity's best view yet of the tiny survivor from the solar system's earliest days. See what we know about the dwarf planet Ceres in this our infographic.
05 March 2015, 06:00 PM ET
On Friday (March 6), NASA's Dawn spacecraft will slip into orbit around the dwarf planet Ceres. It's been a long journey for the probe and for the team of scientists and engineers assigned to the mission.
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, 04:20 PM ET
Astronomers using the Hubble Space Telescope snapped  a cross-shaped pattern of 4 images of the same supernova. The images were discovered "around a giant foreground elliptical galaxy embedded in a cluster of galaxies."
05 March 2015, 02:01 PM ET
The fastest-known star in the Milky Way is on a path out of the galaxy, and new research suggests it was a supernova that gave it the boot.
05 March 2015, 02:01 PM ET
Albert Einstein's General Theory of Relativity celebrates its 100th anniversary in 2015. See the basic facts of Einstein's relativity in our infographic here.
05 March 2015, 02:01 PM ET
The famous theory, which Einstein published in 1915, remains the bedrock upon which scientists' understanding of the origin and evolution of the universe rests.
05 March 2015, 02:01 PM ET
Ancient Mars likely once had an ocean large enough to cover 20 percent of the Martian surface, a fifth of the planet, scientists say. But over time, most of that water was lost to space.
05 March 2015, 02:01 PM ET
For the first time, a cosmic magnifying glass has allowed scientists to see the same star explosion four times, possibly offering a revealing glimpse into these explosive stellar deaths and the nature of the accelerating universe.
05 March 2015, 12:09 PM ET
New research reveals that a compact helium star that's traveling out of the Milky Way galaxy was once donating its mass as part of a type Ia supernova pair. The spin of the star increased dramatically over time leading to its eventual ejection.
05 March 2015, 12:01 PM ET
About 4.5 billion years ago, the Red Planet was a much wetter place. New isotopic measurements of Mars by several ground-based telescopes on Earth reveal a new map of where the water laid and a model of water loss over time can be constructed.
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.