NASA

NASA released the image of a Christmas wreath shaped nebula, and the infrared light given off is even the right color of green with nearby stars looking like silver bell decorations.

NASA has released an image of how a nebula, which is 1,000 light-years away, is celebrating Christmas.

The mystery of the Namibian space ball has been solved before the end of 2011, but the answer, sadly, does not lie in UFOs and alien life. Instead, the extraterrestrial object is almost certainly a hydrazine bladder tank... a mystery solved not by NASA, but by a commenter on Gawker. Details and photos here.

A Russian Soyuz capsule arrived at the International Space Station on Friday with a trio of astronauts, bringing the orbital outpost back to full staffing after a failed cargo ship launch in August disrupted flight schedules.

Here's a surprising 'free gift' from the sky above, ahead of Christmas - Comet Lovejoy was unexpectedly spotted falling into the horizon vertically. NASA Commander Dan Burbank, who was photographing lightning storm over the Pacific Ocean had captured this surprising and fantastic scene at the International Space Station on Wednesday.

NASA's James Webb Space Telescope is one step closer to completion after the primary mirrors passed a crucial test, the space agency announced Dec. 21. Webb is the successor to the Hubble Telescope, and once in place, it will be able to peer into the very earliest galaxies at the edge of the known universe.

NASA and the European Space Agency (ESA) will look into a mysterious space ball, which dropped onto an African village in Namibia in mid-November. The hollow ball is reportedly made of a metal alloy known to man.

The Russian Soyuz rocket is en route to the International Space Station, carrying three astronauts who will fill the station to living capacity.

Only one day after NASA announced the discovery of the first earth sized planets orbiting a distant star, scientists working on a different project have said they have found two even smaller alien worlds. Using the same Kepler instrument as the NASA discovery, a team of researchers focusing on another distant star found two rocky planets they weren't even looking for.

NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system, a milestone in the search for planets like the earth, the space agency said on Tuesday.

A trio of astronauts blasted off aboard a Russian Soyuz rocket on Wednesday on a mission to bring the International Space Station back up to full manpower after an August cargo launch accident disrupted flights.

Two new Earth-like planets have been discovered, and one of them is actually a bit smaller than the Earth. They are about 1,000 light-years away, and Kepler-20e and Kepler-20f are two of the smallest planets ever detected orbiting another star.

Planets orbiting red dwarf stars may have a habitable zone 10-30 percent further away from the star than previously calculated, according to scientists.

NASA has released an image of a supernova remnant (SNR) called 'Puppis A,' which contains dust and gas cloud in the form of a 'glowing red rose'. The image was captured by NASA's WISE (Wide-field Infrared Survey Explorer).

On the heels of the announcement of the first-confirmed Earth-like planet, NASA officials plan Tuesday to announce new discoveries from the founding Kepler mission.

Budget cuts in a program to spur commercial space taxis will likely keep the United States dependent on Russia to fly astronauts to the International Space Station until 2017, NASA's head of space operations said on Thursday.

The Geminid meteor shower is one of the most beautiful and intense series of shooting stars in the year, with 120 meteors sighted per hour during its peak. Before the 2011 shower ends, take advantage of our ten tips for watching tonight's star show, from how to find the best spot (and block the moon) to taking pictures of the meteors.

NASA is developing a harpoon that can collect data from flying comets.

Another apparent UFO sighting emerged, most recently during the protests taking place in Russia on Saturday when someone out of the crowd was able to capture a video of what most believed to be a UFO hovering over and watching the 25,000 pro-democracy protesters in Moscow's Bolotnaya Square.

NASA's next generation Mars rover, the Curiosity, is already well on its way to visit the red planet and has already begun its research mission from space.

According to reports, someone among a throng of people captured a video on Saturday of what 25,000 pro-democracy protesters in Moscow's Bolotnaya Square believed to be a UFO hovering over the crowd.