Starts With a Bang! 5 Nov 2018, 14:01 UTC These ten ghostly astronomical sights house some deep-and-frightening scientific truths within them.
Sky and Telescope 5 Nov 2018, 13:00 UTC Take a look behind the scenes as the New Horizons team gears up for the historic first flyby of a body in the remote Kuiper Belt, in this first of a four-part series from the mission's Principal Investigator Alan Stern.
The Planetary Society Blog
The Mars Exploration Rovers Update: NASA Green-Lights Team to Continue Opportunity Recovery Plan into 20195 Nov 2018, 07:19 UTC October came and went without a beep from Opportunity, silence that was still no surprise for some, but a little discouraging for other members of the Mars Exploration Rovers (MER) team. “We're still waiting,” said MER Principal Investigator Steve Squyres, of Cornell University, summing up the month.
Geekwire 3 Nov 2018, 17:58 UTC For decades, rocket scientist Robert Zubrin has been a voice crying in the Martian wilderness. But now the president of the Mars Society is pleading the case for a cause that’s much closer than the Red Planet: low-cost lunar exploration and settlement.
Starts With a Bang! 3 Nov 2018, 14:01 UTC We speak about it, argue over it, and even fight wars for it. We know it when we see it. But just what is energy, anyway?
Universe Today 2 Nov 2018, 20:02 UTC All over the world, some truly groundbreaking telescopes are being built that will usher in a new age of astronomy. Sites include the mountain of Mauna Kea in Hawaii, Australia, South Africa, southwestern China, and the Atacama Desert – a remote plateau in the Chilean Andes. In this extremely dry environment, multiple arrays are being built that will allow astronomers to see farther into the cosmos and with greater resolution. One of these is the European Southern Observatory’s (ESO) Extremely Large Telescope (ELT), a next-generation array that will feature a complex primary mirror measuring 39 meters (128 feet) in diameter. At this very moment, construction is underway atop the Andean mountain of Cerro Armazones, where construction teams are busy pouring the foundations for the largest telescope every built.
Centauri Dreams 2 Nov 2018, 16:25 UTC It seems to be a week for endings. Following the retirement of the wildly successful Kepler spacecraft, we now say goodbye to Dawn following an extraordinary eleven years that took us not only to orbital operations around Vesta but then on to detailed exploration of Ceres. The spacecraft ran out of hydrazine, with the signal being lost by the Deep Space Network during a tracking pass on Wednesday. No hydrazine means no spacecraft pointing, vital in keeping Dawn’s antenna properly trained on a distant Earth.
Starts With a Bang! 2 Nov 2018, 14:01 UTC One of the most astonishing facts about science is how universally applicable the laws of nature are. Every particle obeys the same rules, experiences the same forces, and sees the same fundamental constants, no matter where or when they exist. Gravitationally, every single entity in the Universe experiences, depending on how you look at it, either the same gravitational acceleration or the same curvature of spacetime, no matter what properties it possesses. At least, that’s what things are like in theory. In practice, some things are notoriously difficult to measure. Photons and normal, stable particles both fall as expected in a gravitational field, with Earth causing any massive particle to accelerate towards its center at 9.8 m/s². Despite our best efforts, though, we have never measured the gravitational acceleration of antimatter. It ought to accelerate the exact same way, but until we measure it, we can’t know. One experiment is attempting to decide the matter, once-and-for-all. Depending on what it finds, it just might be the key to a scientific and technological revolution.