14 January 2015, 05:40 PM ET
A large asteroid about a third of a mile wide will buzz safely by Earth on Jan. 26, and mark the planet's closest encounter with a space rock of its size until 2027.
14 January 2015, 07:00 AM ET
On Dec. 29, CIA officials suggested via Twitter that many UFOs reported in the 1950s and '60s were actually high-flying U-2 spy planes.
13 January 2015, 10:00 PM ET
The universe was born with the Big Bang as an unimaginably hot, dense point. SPACE.com offers an overview of the universe and its history, age and structure.
13 January 2015, 05:21 PM ET
New images and a movie show Comet Lovejoy in all its glowing green glory.
13 January 2015, 03:17 PM ET
Watch the shimmering parade of surface feature names dance in step with the moving terminator as Luna's phase, libration and position angles during the year’s course are animated and time-stamped.
13 January 2015, 11:30 AM ET
This stunning image shows a bright supernova in the Superwind galaxy taken on Jan. 2 by astrophotographer Justin Ng.
11 January 2015, 10:16 AM ET
This incredible time-lapse of Earth from space was created from about 12,500 images taken by ESA astronaut Alexander Gerst during his six-month stay on the International Space Station.
09 January 2015, 02:52 PM ET
SpaceX is set to launch its Dragon spacecraft in the wee hours of Saturday, Jan. 10, and the predawn Falcon 9 rocket liftoff just might be visible to early-bird skywatchers long the U.S. East Coast. Here's how to see it.
09 January 2015, 02:30 PM ET
Amateur astronomers captured amazing photos of a bright comet as it raced across the sky this week. See the amazing photos from Tyler Leavitt in Las Vegas and Chad Bakley in Cape May, New Jersey.
08 January 2015, 03:43 PM ET
The hard-to-spot planet Mercury can be found near Venus just after sunset this week, offering a great chance to see the closest planet to sun. Here's how to see Mercury and Venus together in January's night sky.
07 January 2015, 03:12 PM ET
Skywatchers have a chance to spot the bright planet Jupiter and the moon sparkling brightly in the sky tonight, weather permitting, but only if you know when and where to look.
07 January 2015, 02:38 PM ET
The bright green Comet Lovejoy C/2014 Q2 is shining at its best this week as it passes through the constellation Eridanus, the Heavenly River. Here's how to see it.
05 January 2015, 03:04 PM ET
Early-bird skywatchers along the eastern United States have an opportunity, weather permitting, to see the private spaceflight company SpaceX launch a robotic Dragon capsule to the International Space Station before dawn on Tuesday (Jan. 6).
05 January 2015, 01:42 PM ET
Skywatchers will be treated to a fascinating ballet of the so-called Galilean moons throughout the month, as the satellites pass one another, sometimes blocking (occulting) or casting shadows (eclipsing) and casting shadow onto Jupiter’s cloud tops.
05 January 2015, 11:48 AM ET
An highly active sun encouraged photographer Chad Blakley (lightsoverlapland.com) to capture the Northern Lights from two different vantage points in Abisko National Park on Dec. 28th, 2014.
05 January 2015, 10:24 AM ET
The newfound Comet Lovejoy (C/2014 Q2) is amazing stargazers in telescope views. See photos of Comet Lovejoy in this gallery of images sent in to Space.com by amateur astronomers.
04 January 2015, 10:07 AM ET
Mercury and Venus will dazzle skywatchers this January. Check out Space.com to find out when and where to see this month's best skywatching events.
03 January 2015, 09:12 AM ET
Streaks of red light paint the New Year's Eve night sky in this gorgeous image from photographer Miguel Claro.
03 January 2015, 08:55 AM ET
The 2015 Quadrantid meteor shower peaks tonight (Jan. 3), but the bright moonlight may outshine these dazzling 'shooting stars.' Here is how to see the annual Quadrantids.
02 January 2015, 03:11 PM ET
Currently hovering very low in the southwest twilight sky near the setting sun these evenings is the most brilliant of the planets: Venus. And in the New Year, this planet will truly shine.
01 January 2015, 07:00 AM ET
Stargazers can start the New Year off with a bang this weekend as the first meteor shower of 2015 reaches its peak on Saturday night (Jan. 3). Here's how to see the 2015 Quadrantid meteor shower.
01 January 2015, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in December 2014.
31 December 2014, 11:50 AM ET
The Geminids come from an asteroid, 3200 Phaethon, but scientists are still trying to figure out exactly how it sheds enough debris to produce the bright meteor shower.
31 December 2014, 08:07 AM ET
See what's up in the night sky for January 2015, including stargazing events and the moon's phases, in this SPACE.com gallery courtesy of Starry Night Software.
31 December 2014, 08:00 AM ET
Look to the skies in 2015 to see total eclipses, amazing planets and meteor showers. Here are some of the most noteworthy skywatching events coming up next year. Space.com will provide more extensive coverage of most of these events as they draw closer.
30 December 2014, 07:34 PM ET
The latest episode of the Space Telescope Science Institute's "Tonight's Sky", learn where to find Venus, Mercury, Jupiter and Saturn. Constellation of Auriga, bright star Capella and the Pleides star cluster highlight the month.
29 December 2014, 12:14 PM ET
The beginning of 2015 will be the best time to observe a new comet that could put on a potentially spectacular show in Earth's skies.
27 December 2014, 09:06 AM ET
Look to the sky Sunday (Dec. 28) to see the moon in a close encounter with the planet Uranus. Uranus is theoretically visible with the unaided eye, but realistically most of us need binoculars to see it.
25 December 2014, 08:20 AM ET
While lights decorating Christmas trees twinkle indoors, the stars of the Christmas sky shine brightly during the last week of 2014.
23 December 2014, 06:02 AM ET
See the most amazing night sky photos of 2014 by amateur astronomers and stargazers around the world in our year-end gallery here. Solar eclipses, the moon and more wowed Space.com readers this year.
22 December 2014, 09:45 PM ET
Comet ISON, discovered by two amateur astronomers in Russia, arrived in Earth's neighborhood in November 2013 and apparently broke up as it rounded the sun.