29 April 2014, 10:35 PM ET
This stunning space wallpaper is a colorized composite image from NASA's Dawn mission showing the crater Antonia, which lies in the enormous Rheasilvia basin in the southern hemisphere of the giant asteroid Vesta.
29 April 2014, 04:43 PM ET
A Martian canyon looks much like parts of south-central Idaho, raising the question of whether the Red Planet once had enough water to experience enormous, catastrophic floods that could have carved these formations.
29 April 2014, 01:05 PM ET
A sunset solar eclipse wowed observers in Australia Tuesday (April 29) during the first solar eclipse of 2014. See photos of the solar eclipse here.
29 April 2014, 01:21 AM ET
We know we live in an expanding universe but it’s also changing color and has been doing so for billions of years.
28 April 2014, 10:26 PM ET
A cloud of gas headed for the heart of the Milky Way could provide insight into how black holes are supersized.
28 April 2014, 10:10 PM ET
This cool space wallpaper taken from the International Space Station is not an interstellar cloud formation but artificial light over a cloudy China.
27 April 2014, 07:03 PM ET
Everyone’s favorite furry aliens from Star Wars, the Ewoks, lived on the “forest moon of Endor”. In scientific terms, the Ewok’s home world would be referred to as an exomoon, or a moon that orbits any planet that orbits a star other than our sun.
26 April 2014, 02:24 PM ET
Everyone knows that alcohol – ethanol to be precise – is a liquid at normal temperatures. So how can Palcohol be a solid?
26 April 2014, 01:58 PM ET
The 1994 eclipse — when a dragon ate the sun.
26 April 2014, 01:40 AM ET
The discovery of exoplanets also slightly increases how much credence we give to the possibility of near-term human extinction. This because of a concept known as the Great Filter.
25 April 2014, 02:56 PM ET
The Milky Way is a spiral galaxy — but what exactly does it look like? Does it have two, four, or more arms? Astronomers think that now they’re one step closer to the answer.
25 April 2014, 02:45 PM ET
Two Michigan-based photographers, Terry Hancock of Fremont and Robert Fields of Howell Township, captured this brilliant image of three nebulas and a star cluster on April 11. See how they did it.
25 April 2014, 02:17 PM ET
Night sky photographer Giuseppe Petricca of Pisa, Italy, took these gorgeous images on March 3 of the crescent moon illuminated with earthshine over an Italian citadel. See how he did it.
25 April 2014, 10:06 AM ET
Noctilucent clouds are seeded by meteorites burning up in the atmosphere and form at Earth's polar regions. Researchers have found correlations with the appearance of these clouds and Earth's climate.
24 April 2014, 07:00 PM ET
NASA has long held the lead in the exploration of Mars, and that trend will continue, says NASA administrator Charles Bolden.
23 April 2014, 11:13 PM ET
Scientists created this stunning space wallpaper, which is a composite image of Vesta's crater Aelia. The image reveals the flow material on the inside and outside of the crater.
22 April 2014, 11:17 PM ET
This space wallpaper is a color-coded topography map of Juventae Chasma revealed by Mars Express. White and red show the highest terrains, while blue and purple show the deepest.
22 April 2014, 03:00 PM ET
Between 2000 and 2013, 26 explosions ranging from 1-600 kilotons have been detected by the Nuclear Test Ban Treaty Organization's network of sensors. The bomb that decimated Hiroshima had an energy equivalent of 15 kilotons.
19 April 2014, 09:54 PM ET
Astrophysicists are getting to the depth of dark matter.
18 April 2014, 02:01 PM ET
The space agency's Lunar Atmosphere and Dust Environment Explorer spacecraft (LADEE) made its planned crash into the lunar surface between 12:30 a.m. EDT (0430 GMT) and 1:22 a.m. EDT (0522 GMT) on April 18 after orbiting the moon since October 2.
17 April 2014, 05:09 PM ET
Scientists have discovered Kepler-186f, the first Earth-size alien planet in the habitable zone of its host star. The so-called 'Earth cousin' just might have liquid water and the right conditions to support life.
17 April 2014, 02:43 PM ET
Planet-hunters have new evidence of a planet, about 1.1x Earth’s size, in orbit around another star. Kepler 186f, the outermost world of a 5-planet system, revolves about 3x closer to its star than Earth does to our Sun. More--> http://goo.gl/1fUS
16 April 2014, 06:53 PM ET
A distant group of hot, young stars cause a cloud of hydrogen gas to glow a rosy red 7,300 light-years from Earth in the latest amazing view from a telescope in Chile.
16 April 2014, 01:30 PM ET
Despite frozen shutters and cracking film, Victor Rogus captured the 2000 lunar eclipse.
16 April 2014, 12:49 PM ET
Filmmaker Kai Staats joins leading researchers from the LIGO team to share the motivations behind "LIGO: A Passion for Understanding."
15 April 2014, 11:12 PM ET
Photographs taken by NASA's Cassini probe in April 2013 show a bright arc about 750 miles long and 6 miles wide at the edge of Saturn's outermost ring. This arc was probably created by the gravity of a small, icy object nearby — possibly a newborn moon.
15 April 2014, 11:13 AM ET
The moon took on an eerie blood-red hue early Tuesday during the first total lunar eclipse of 2014, a celestial sight that wowed potentially millions of stargazers across North and South America. See photos of the amazing total lunar eclipse here.
14 April 2014, 10:14 PM ET
This beautiful space wallpaper is a composite image combining a new infrared view of the Crab Nebula, obtained with ESA’s Herschel Space Observatory, with an optical image from the archives of the NASA/ESA Hubble Space Telescope.
14 April 2014, 10:08 PM ET
A powerful scientific tool set to come online in 2015 could help scientists spot gravitational waves, ripples in space-time born from violent cosmic crashes light-years from Earth.
14 April 2014, 02:56 PM ET
A popular televangelist from San Antonio named John Hagee has stated that the four lunar eclipses scheduled to begin this month — also known as "blood moons" — are a sign that biblical prophecies are about to come true.
14 April 2014, 02:12 PM ET
The first total lunar eclipse of 2014 will occur overnight tonight, marking the start of an eclipse tetrad — four back-to-back total lunar eclipses — that will happen over the next 18 months.
14 April 2014, 12:01 AM ET
NASA scientists found faint signatures of water in the atmospheres of five distant planets orbiting three different stars, as illustrated in this space wallpaper. All five planets appear to be hazy.