Through crystal clear skies this beautiful panorama follows the curve of planet Earth's shadow rising across the top of the world. The tantalizing twilight view is composed of eight single frames captured from 4,000 meters above sea level at sunset on April 6. Just above the dark grey Earth-shadow boundary lies a fading, pinkish, anti-twilight arch.
Also known as the belt of Venus, its reddened and back-scattered sunlight finally merges with the still blue eastern sky. Standing tall near cen [...]
Two veteran NASA missions are providing new details about icy, ocean-bearing moons of Jupiter and Saturn, further heightening the scientific interest of these and other "ocean worlds" in our solar system and beyond. The findings are presented in papers published Thursday by researchers with NASA's Cassini mission to Saturn and Hubble Space Telescope.
In the papers, Cassini scientists announce that a form of chemical energy that life can feed on appears to exist on Saturn's moon Enceladus, and [...]
Commander Peggy Whitson and Flight Engineers Thomas Pesquet and Oleg Novitskiy juggled a wide variety of space science and human research Thursday. The Expedition 51 trio also switched roles from orbital scientists to high-flying technicians maintaining the systems of the International Space Station.
Whitson started the day testing her fine motor skills to help researchers understand space adaptation and potentially design future touch-based devices for astronauts. The commander then spent th [...]
On April 10, a Full Moon and Jupiter shared this telephoto field of view. Both were near opposition, opposite the Sun in Earth's night sky. Captured when a passing cloud bank dimmmed the bright moonlight slightly, the single exposure reveals the familiar face of our fair planet's own large natural satellite, along with a line up of the ruling gas giant's four Galilean moons.
Labeled top to bottom, the tiny pinpricks of light above bright Jupiter are Callisto, Europa, Ganymede, and Io. Closer [...]
The three Expedition 51 crew members aboard the International Space Station are waiting for a new cargo shipment and a new crew to arrive next week. The orbiting trio are also performing human research and working on U.S. spacesuits.
A pair of spaceships are due next week at the space station. The Orbital ATK Cygnus will launch April 18 on a four-day trip to deliver over 7,600 pounds science gear and crew supplies. On April 20, a pair of new Expedition 51 crew members will blast off in the So [...]
With two suns in its sky, Luke Skywalker's home planet Tatooine in "Star Wars" looks like a parched, sandy desert world. In real life, thanks to observatories such as NASA's Kepler space telescope, we know that two-star systems can indeed support planets, although planets discovered so far around double-star systems are large and gaseous. Scientists wondered: If an Earth-size planet were orbiting two suns, could it support life?
It turns out, such a planet could be quite hospitable if locate [...]
Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have revealed extraordinary details about a recently discovered far-flung member of our solar system, the planetary body 2014 UZ224, more informally known as DeeDee.
At about three times the current distance of Pluto from the Sun, DeeDee is the second most distant known trans-Neptunian object (TNO) with a confirmed orbit, surpassed only by the dwarf planet Eris. Astronomers estimate that there are tens-of-thousands of [...]