NASA's Juno spacecraft will make its long anticipated arrival at Jupiter on July 4. Coming face-to-face with the gas giant, Juno will begin to unravel some of the greatest mysteries surrounding our solar system's largest planet, including the origin of its massive magnetosphere.
Magnetospheres are the result of a collision between a planet's intrinsic magnetic field and the supersonic solar wind. Jupiter's magnetosphere -- the volume carved out in the solar wind where the planet's magnetic fi [...]
How far are you from a naturally dark night sky? In increasing steps, this world map (medium | large) shows the effect of artificial night sky brightness on the visual appearance of the night sky. The brightness was modeled using high resolution satellite data and fit to thousands of night sky brightness measurements in recent work. Color-coded levels are compared to the natural sky brightness level for your location.
For example, artificial sky brightness levels in yellow alter the natural [...]
Three Expedition 48 crew members worked on a variety of science experiments today before this weekend’s cargo ship maneuvers. On the ground in Kazakhstan, another set of crew members is getting ready for a two-day trip to the International Space Station next week.
Commander Jeff Williams worked on the 3-D Printing in Zero-G experiment inside the Destiny lab module’s Microgravity Science Glovebox. Ground controllers also remotely operated the experiment creating a pair of 3-D objects. NASA [...]
The brightest area on Ceres, located in the mysterious Occator Crater, has the highest concentration of carbonate minerals ever seen outside Earth, according to a new study from scientists on NASA's Dawn mission. The study, published online in the journal Nature, is one of two new papers about the makeup of Ceres.
"This is the first time we see this kind of material elsewhere in the solar system in such a large amount," said Maria Cristina De Sanctis, lead author and principal investigator of [...]
This beautiful telephoto composition spans light-years in a natural night skyscape from the island of Crete. Looking south, exposures both track the stars and record a fixed foreground in three merged panels that cover a 10x12 degree wide field of view. The May 15 waxing gibbous moonlight illuminates the church and mountainous terrain. A mere 18 thousand light-years away, huge globular star cluster Omega Centauri (NGC 5139) shining above gives a good visual impression of its appearance in binocu [...]
Fireworks shows are not just confined to Earth’s skies. NASA’s Hubble Space Telescope has captured a spectacular fireworks display in a small, nearby galaxy, which resembles a July 4th skyrocket.
A firestorm of star birth is lighting up one end of the diminutive galaxy Kiso 5639. The dwarf galaxy is shaped like a flattened pancake, but because it is tilted edge-on, it resembles a skyrocket, with a brilliant blazing head and a long, star-studded tail.
Kiso 5639 is a rare, nearby exam [...]
Expedition 48 Commander Jeff Williams is conducting a 3-D printing experiment inside the Destiny laboratory module today. His crewmates, Flight Engineers Oleg Skripochka and Alexey Ovchinin, worked on a variety of Russian experiments and readied a cargo ship for departure.
Williams gathered the 3-D Printing payload hardware and set up the gear in the Destiny lab’s Microgravity Science Glovebox. The 3-D Printing in Zero G is a demonstration experiment seeking to determine if a 3-D printer ca [...]
A booster for the most powerful rocket in the world, NASA’s Space Launch System (SLS), successfully fired up Tuesday for its second qualification ground test at Orbital ATK's test facilities in Promontory, Utah. This was the last full-scale test for the booster before SLS’s first uncrewed test flight with NASA’s Orion spacecraft in late 2018, a key milestone on the agency’s Journey to Mars.
“This final qualification test of the booster system shows real progress in the development o [...]