11 September 2014, 07:12 AM ET
A team of researchers has delineated the "Venus Zone," the range of distances from a host star where planets are likely to resemble Earth's similarly sized sister planet, which has been rendered unlivably hot due to a runaway greenhouse effect.
11 September 2014, 07:00 AM ET
The sun fired off strong flares Tuesday and Wednesday from a sunspot known as Active Region 2158, which will be the focus of a free webcast hosted today at 1 p.m. EDT by the online Slooh Community Observatory. Watch it here on Space.com.
11 September 2014, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in August 2014.
10 September 2014, 05:24 PM ET
The sun unleashed an X-class solar flare — the most powerful type — at 1:45 p.m. EDT today from an Earth-facing sunspot known as Active Region 2158. The flare poses no danger to anyone here on Earth, and orbiting astronauts are safe as well.
10 September 2014, 03:25 PM ET
Sunspot AR2158 produced a X1.6-class flare on September 10th, 2014. The site of the blast faced where Earth would be if a coronal mass ejection (CME) was emitted. Imagery not yet fully returned from orbiting observatories will be checked for this.
10 September 2014, 01:45 PM ET
Quasars are the brightest objects in the universe, and display a mysterious diversity in their appearance that have puzzled astronomers for more than two decades. Now, scientists think they have a method for solving that mystery.
10 September 2014, 01:20 PM ET
Having traveled 25 miles since landing in 2004, the long-lived NASA rover snapped an image that included several hundred yards of its tracks as it rolled along the rim of Along the rim of Mars Endeavour Crater on Mars.
10 September 2014, 12:53 PM ET
A tour of nearby cool objects takes us to W0855 which, researchers believe, has water and sulfides in its atmosphere. The icy body is as cold as the North Pole and 3 to 10 times larger than Jupiter.
10 September 2014, 07:02 AM ET
Stunning new photos taken by a telescope in Chile show an incredible grouping of stars that may help scientists solve a stellar conundrum.
10 September 2014, 07:00 AM ET
A New York Fashion Week event will showcase a line of silk scarves artfully printed with free-to-use images taken by NASA spacecraft like the Hubble Space Telescope and Mars Reconnaissance Orbiter.
10 September 2014, 06:45 AM ET
An excerpt from "Curiosity," Rod Pyle's new book about NASA's $2.5 billion Mars Science Laboratory mission.
10 September 2014, 06:00 AM ET
The cluster is located about 90,000 light years away in the Sagittarius Dwarf Galaxy. Astronomers using Europe's Very Large Telescope (VLT) in Chile have been observing the cluster to measure levels of the element lithium in its stars.
09 September 2014, 04:00 PM ET
The Giant Magellan Telescope (GMT) completed several major external reviews earlier this year and is on target to break ground in the Chilean Andes before the end of 2014. The huge scope should begin observing the heavens early in the next decade.
09 September 2014, 01:41 PM ET
Sunspot AR2158 unleashed an M4.6-class flare on September 9, 2014. NASA estimates that the coronal mass ejection (CME) was moving pretty fast. According to Spaceweather.com, "it will deliver a glancing blow to Earth's magnetic field."
09 September 2014, 12:52 PM ET
The mission that will study the Red Planet's atmosphere will reach its target on September 21, 2014 at 10pm EST. Its transfer orbit and orbital insertion are explained.
09 September 2014, 06:44 AM ET
New research shows that an object, known as WISE J0304-2705 and classified as a Y dwarf, may have begun its evolution with a temperature as hot as a red dwarf star before settling on its present temperature, which is similar to Venus.
08 September 2014, 05:12 PM ET
The space rock flew within 21,000 miles of the surface of Earth on September 7th, 2014. A. Thirouin, B. Skiff, and N. Moskovitz analyzed the brightness variations using the Lowell Observatory's 1.1m Hall telescope in Arizona.
08 September 2014, 04:57 PM ET
A committee formed by the Nicaraguan government determined that a new, 39-foot-wide (12 meters) crater found near capital city Managua's international airport was blasted out by a space rock strike Saturday night. But experts aren't convinced.
08 September 2014, 12:55 PM ET
A brief history of those who braved the frosty frontier of the north from 325 B.C. to the 20th century. -- Part II - From Space: http://goo.gl/yZC6AR
08 September 2014, 12:48 PM ET
A brief history of orbital sea ice observatories from the Tiros weather satellites of the 1960's to the ICE-Sat 2 scheduled for launch in 2016. -- Part I: Pre-Space Age: http://goo.gl/7vTqwE
08 September 2014, 11:30 AM ET
Big slabs of ice are sliding over and under each other within Europa's ice shell, a new study suggests. The Jovian satellite may thus be the only solar system body besides Earth to possess an active system of plate tectonics.
08 September 2014, 11:27 AM ET
Reports of a loud boom were heard on the evening of Sept. 6, 2014 in the captital city of Managua. A crater was found the following afternoon.
08 September 2014, 06:50 AM ET
Instead of arriving at a bright, reflective, ice-covered heavenly body, the European Space Agency's Rosetta probe found that its target comet, 67P/Churyumov-Gerasimenko, appears darker than charcoal in some wavelengths of light.
07 September 2014, 12:46 PM ET
What was your favorite space news story of the last week?
06 September 2014, 11:56 AM ET
From Comet Jacques to a coronal mass ejection, don't miss these amazing space images of the week for Sept. 6, 2014.
06 September 2014, 10:34 AM ET
The near-Earth asteroid 2014 RC is buzzing Earth this weekend and the Slooh Community Observatory and Virtual Telescope Project will provide live webcasts tonight (Sept. 6). Here's how to see them.
06 September 2014, 08:09 AM ET
Pieces of the space rock that exploded over Russia in 2013 will go on sale at auction this month.
05 September 2014, 11:51 PM ET
The VLT Survey Telescope at ESO’s Paranal Observatory in Chile has captured this beautifully detailed space wallpaper of the galaxy Messier 33, often called the Triangulum Galaxy.
05 September 2014, 03:57 PM ET
After weeks of scrutinizing possible landing sites on a comet, European Space Agency managers of the Rosetta mission will reveal where they plan to set their lander, Philae, in an announcement Sept. 15.
05 September 2014, 10:19 AM ET
Scientists want your help sorting through gorgeous images of Earth at night snapped by orbiting astronauts. Studying such photographs could show how light pollution is affecting human health and reveal ways to save energy and improve public safety.
05 September 2014, 09:25 AM ET
A substance that was banned from use by the Montreal Protocol in 1987, carbon tetrachloride, still has a mysterious presence in the atmosphere. Levels of the substance has been declining, just not at the rate that was expected.
05 September 2014, 06:40 AM ET
In December 2013, researchers using NASA's Hubble Space Telescope announced they had spotted evidence of geysers erupting from Europa's south polar region. But follow-up Hubble observations in January and February showed no signs of the plumes.