Hippocamp is one of the smallest, and darkest, moons of Neptune. Known to astronomers as “The Moon that Shouldn’t be There,” it orbits the giant planet at a distance so close to the larger moon of Proteus that it should have already been destroyed. Researchers using the Hubble Space Telescope have now concluded that this tiny satellite, just 20 miles in diameter, broke off of its larger neighbor billions of years ago, following an impact with a comet. When Voyager 2 visited Neptune in 1989, it photographed a massive impact crater on Proteus, which is likely evidence of this ancient collision.Read More Hubble Reveals Origins of Hippocamp — The Tiny Moon of Neptune that Shouldn’t Be There
The Moon was once thought to be completely dry and barren. In recent years, however, a number of spacecraft have revealed evidence for water ice in craters near the lunar poles. Most astronomers believed this ice was placed there through collisions with water-rich comets. A new study from NASA now shows that the solar wind, a stream of charged particles emanating from the Sun, can interact with materials on the lunar surface, producing water. Supplies of water will be essential for the human exploration of the solar system.Read More Water Could Form on the Surface of the Moon, Thanks to the Solar Wind
The Opportunity rover on Mars has now been declared dead, the victim of a massive sandstorm which covered the planet in June 2018. The final image ever taken by the Opportunity rover on the Red Planet highlights the moment the spacecraft fell silent. The top of the image shows a darkened sky from the massive sand storm last June, and the bottom becomes completely dark, as the vehicle lost power forever. NASA officials tried for months to revive the rover, without success.Read More Saying Goodbye to Opportunity — Here’s the Last Image
NASA is readying a new spacecraft, the Europa Clipper, for a journey to explore the giant water moon of Jupiter. Europa is believed to have oceans of liquid water deeper than any found on Earth, which are heated by bending and flexing as it orbits its massive companion. The spacecraft, due for launch in 2023, will carry instruments to measure the composition and condition of the oceans of Europa, as well as that world’s atmosphere, surface, and magnetic field. Astronomers believe that Europs may be one of the most likely places in the solar system to find alien life,Read More NASA Readies Europa Clipper for First In-Depth Study of Jupiter’s Water Moon Europa
The Parker Solar Probe has just completed its first orbit of the Sun, as it studies the surface and atmosphere of our parent star. This mission was launched in August 2018, as the most ambitious mission ever to study the Sun. The spacecraft will help answer questions about solar science, including the mysteries of why the atmosphere of the Sun is hotter than its surface, and the origin of the solar wind. The mission is scheduled to last seven years, during which time the vehicle will also make seven close passes of the planet Venus.Read More Weee! Parker Solar Probe Completes First Trip Around the Sun
The oldest rock from Earth ever found was recently discovered hiding on the Moon. The four-billion-year-old rock was found among the samples returned from the Moon by the astronauts of Apollo 14. Analysis shows this rock formed on Earth, was blasted into space when an asteroid hit our planet four billion years ago, ejecting the rock onto the surface of the Moon. Once there, the area was hit by an asteroid, burying big Bertha, before another impact raised it, once again, to the surface. It was returned to Earth in 1971 by astronauts Alan Shepard and Edgar Mitchell.Read More Earth’s Oldest Rock Found – It was Hiding on the Moon!
The Chang-e 4 spacecraft touched down on the far side of the Moon on January 3rd, marking the first time the distant half of the lunar surface has been visited by a robotic explorer. The Chinese spacecraft arrived with a rover, the Yutu 2, which was successfully released to explore the alien landscape. Also on-board is a miniature biosphere, containing four species of plants, yeast, and fruit flies. Mission planners hope to use the system to grow flowers on the Moon, an experiment which could lead the way to growing food for the future human colonization of the Solar System.Read More Growing Flowers on the Lunar Surface? China Lands Chang-e 4 Rover on the Far Side of the Moon
The New Horizons spacecraft is racing toward an encounter with the most-distant object ever visited by humans. Ultima Thule is a member of the Kuiper Belt, a collection of icy, rocky bodies at the edge of our planetary system, well beyond the orbit of the most distant planet, Neptune. New Horizons made history in 2015, when it became the first spacecraft to visit Pluto. The encounter will occur on New Year’s Day.Read More New Horizons Races Toward Encounter with Ultima Thule — Most Distant World Ever Studied
The rings of Saturn are disappearing, new research has determined. Particles of rock and ice which make up this magnificent system of rings are falling into the atmosphere of the planet, draining the system of material. Astronomers estimate the rings will be completely gone in just 100 million years, so see them before they disappear forever!Read More Saturn is Losing its Rings – See them Before They’re Gone!
The InSight lander on Mars just returned its first pictures from the Red Planet, including a selfie, showing itself on that world’s ruddy surface. The picture was taken using a robotic arm attached to the vehicle. Another photo shows the area immediately around the spacecraft, where the vehicle will place two instruments designed to measure marsquakes and temperatures beneath the surface of that world. The vehicle landed on November 26th, marking the eighth successful landing on Mars for NASA, out of nine attempts.Read More Mars InSight Lander Takes Selfie, Returning First Image from its New Home