25 October 2013, 02:22 PM ET
The most recent flare, which erupted at 11:03 a.m. EDT Friday, registered as an X-class event, the most powerful type. It clocked in at X2.1 on the space weather scale, beating out the X1.7 flare that the sun fired off just seven hours earlier.
25 October 2013, 12:28 PM ET
The gibbous moon, which is 56 percent illuminated, will emerge from above the east-northeast horizon around 11:20 p.m. local time tonight. And shining brightly roughly 7 degrees above it will be the largest planet in our solar system, Jupiter.
25 October 2013, 11:56 AM ET
Earth likely got most of its water from asteroid impacts nearly 4.6 billion years ago, shortly after the solar system came into being. Researchers found evidence that water disappeared from a meteorite's parent asteroid soon after the space rock formed.
25 October 2013, 10:54 AM ET
Mission commander Alan Shepard Jr. is shown during an EVA.
25 October 2013, 09:30 AM ET
The sun erupted with two of the strongest solar flares it can unleash Friday (Oct. 25), just days after firing off an intense solar storm at Earth. The major solar flares registered as X1.7- and x2-class solar events on the space weather scale.
25 October 2013, 09:04 AM ET
Sunspot AR1882 has made its presence known with a flurry of flares on October 25th, 2013. The second eruption registered an X1.7-class flare. The same Sunspot unleashed flares before and after the X.
25 October 2013, 07:38 AM ET
NASA's Cassini space probe is getting an exceptional look at the vast liquid lakes of Titan's north pole, where dense winter clouds are finally vanishing thanks to a change in seasons on Saturn's largest moon.
24 October 2013, 04:07 PM ET
The mesmerizing rings of Saturn glimmer in a series of new photos that illuminate parts of the planet that normally appear darkened. The infrared images offer unique views of Saturn's dark side, bathed from behind in the sun's light.
24 October 2013, 02:19 PM ET
Opportunity is working its way up "Solander Point," the northern tip of a 130-foot-tall hill. The rover is currently studying rocky outcrops that lie between 6.5 feet and 20 feet above the surrounding plains, and it may climb higher in the coming days.
24 October 2013, 01:20 PM ET
The zoomed panel on this space wallpaper highlights the galaxy known as z8_GND_5296, which was recently confirmed to be the most distant galaxy known, hailing from only 700 million years after the Big Bang.
24 October 2013, 01:09 PM ET
Should we terraform Mars to make it more Earth-like? Or should we "renovate" the Red Planet, in an attempt to resuscitate any native life that might have survived in environmental niches for billions of years?
24 October 2013, 12:15 PM ET
An M9-class eruption lofted a faint coronal mass ejection towards Earth on Oct. 24th, 2013. NASA's Solar Dynamics Observatory captured the fireworks.
24 October 2013, 11:50 AM ET
Visualizers at Goddard Space Flight Center made this video of a 'canyon of fire', created by the eruption of a 200,000 mile long solar filament ripping through the sun's corona.The different colors highlight different temperatures.
24 October 2013, 10:42 AM ET
A "space cannon" scheduled to fire a metal bullet at an asteroid in 2018 has been successfully tested, according to press reports.
24 October 2013, 10:16 AM ET
Shelia Scott served as governor of the British section of the Ninety-Nines.
24 October 2013, 09:30 AM ET
After hunting for the earliest clues about the evolution of the universe for more than four years, the European Space Agency's (ESA) Planck Observatory went dark today.
24 October 2013, 08:00 AM ET
A prototype of Europe's planned ExoMars rover, dubbed Bridget by its control team, spent several days working in Chile as part of the Sample Field Acquisition Experiment with a Rover (SAFER) trial between Oct. 7 and 13.
24 October 2013, 08:00 AM ET
A veteran astrophotographer captured this beautiful photo of the massive hot bed of star formation astronomers call the Cygnus Wall. Photographer Bill Snyder created this image from more than 18 hours of observations in 2013.
24 October 2013, 08:00 AM ET
The European Space Agency's new rover, SAFER, took a test drive around Chile's Atacama Desert recently.
24 October 2013, 07:01 AM ET
A group of astronauts will discuss the imminent threat of asteroid strikes on Earth during a panel discussion at the American Museum of Natural History on Friday, Oct. 25. Here's how you can watch the action live.
23 October 2013, 06:47 PM ET
The Lyrid meteor shower has been observed for more than 2,700 years.
23 October 2013, 04:30 PM ET
A laser communications demonstration flying on NASA's newest moon probe is now a record holder. The Lunar Laser Communications Demonstration aboard the LADEE spacecraft has set a record for the fastest download rate between the moon and Earth.
23 October 2013, 04:20 PM ET
A Phiddipus johnsoni, or red-backed jumping spider (named Nefertiti), has returned from its time on the International Space Station. Its hunting skills were compromised when attempting to capture its prey, due to its readaptation to gravity on Earth.
23 October 2013, 04:10 PM ET
Europe's Gravity field and steady-state Ocean Circulation Explorer satellite (GOCE) has run out of fuel and will likely die a fiery death in Earth's atmosphere about two weeks from now, officials say.
23 October 2013, 03:50 PM ET
India's 4.5 billion rupee ($73.5 million) mission to Mars, the nation’s first true interplanetary probe, is now slated to lift off Nov. 5 at 2:36 local time from the Satish Dhawan Space Centre in Sriharikota, the Indian Space Research Organisation (ISRO)
23 October 2013, 02:52 PM ET
Two of the five main databases that catalog exoplanet discoveries list 1,010 confirmed alien worlds as of today. That's a lot of progress since 1992, when researchers found the first-ever exoplanets orbiting a spinning neutron star, or pulsar.
23 October 2013, 01:01 PM ET
By using data collected by the Hubble Space Telescope and observations with the Keck I telescope in Hawaii, astronomers have now confirmed that the galaxy designated z8_GND_5296 formed within 700 million years after the beginning of the universe.
23 October 2013, 01:00 PM ET
Astronomer Edwin Hubble devised a method for identifying kinds of galaxies.
23 October 2013, 12:01 PM ET
Humanity should start thinking about how to interact with alien species long before coming into contact with extraterrestrial life, experts say.
23 October 2013, 11:51 AM ET
Possible future asteroid miner and CEO of the X Prize Foundation Peter Diamandis now has a different kind of prize.
23 October 2013, 11:10 AM ET
On October 19th, 2013, the Nucleus Gallery in California hosted a party for the grand opening of their new art exhibit. Over 50 pieces of commissioned artwork was available for viewing and sale ranging from photos to painting to knit dolls.
23 October 2013, 10:31 AM ET
A lunar panorama shows Geologist-Astronaut Harrison H. Schmitt working at the Lunar Roving Vehicle during the second Apollo 17 extravehicular activity.