For the first time, astronomers have seen a dusty disk of material around a young star fragmenting into a multiple-star system. Scientists had suspected such a process, caused by gravitational instability, was at work, but new observations with the Atacama Large Millimeter/submillimeter Array (ALMA) and the Karl G. Jansky Very Large Array (VLA) revealed the process in action.
"This new work directly supports the conclusion that there are two mechanisms that produce multiple star systems -- fr [...]
Three Expedition 49 crew members are winding down their stay in space this week, as a new trio gets used to its new home on orbit. While all six International Space Station residents are in the midst of a crew transition, they are still continuing advanced space research and orbital lab maintenance.
Commander Anatoly Ivanishin spent the morning getting the Soyuz MS-01 spacecraft ready for its Saturday night departure. He and Flight Engineers Kate Rubins and Takuya Onishi will board the Soyuz, [...]
A rocky extrasolar planet with a mass similar to Earth’s was recently detected around Proxima Centauri, the nearest star to our sun. This planet, called Proxima b, is in an orbit that would allow it to have liquid water on its surface, thus raising the question of its habitability. In a study to be published in The Astrophysical Journal Letters, an international team led by researchers at the Marseille Astrophysics Laboratory (CNRS/Aix-Marseille Université) has determined the planet’s dimen [...]
An international team of astronomers has discovered glowing gas clouds surrounding distant quasars. This new survey by the MUSE instrument on ESO’s Very Large Telescope indicates that halos around quasars are far more common than expected. The properties of the halos in this surprising find are also in striking disagreement with currently accepted theories of galaxy formation in the early Universe.
An international collaboration of astronomers, led by a group at the Swiss Federal Institute [...]
The newly-expanded Expedition 49 crew is getting ready to grow lettuce to learn how to grow fresh food in space. Meanwhile, the International Space Station is getting ready for another crew swap.
New station crew member Shane Kimbrough is installing hardware and plant pillows for the Veg-03 plant growth experiment. The study is a validation of the tools and procedures necessary to grow plants to provide fresh food for astronauts.
He and his Soyuz crewmates Sergey Ryzhikov and Andrey Borise [...]
Mission controllers commanded Juno to exit safe mode Monday, Oct. 24, with confirmation of safe mode exit received on the ground at 10:05 a.m. PDT (1:05 p.m. EDT). The spacecraft entered safe mode on Oct. 18 when a software performance monitor induced a reboot of the spacecraft's onboard computer. The team is still investigating the cause of the reboot and assessing two main engine check valves.
"Juno exited safe mode as expected, is healthy and is responding to all our commands," said Rick N [...]
What created these unusually long shadows on Saturn's rings? The dark shadows -- visible near the middle of the image -- extend opposite the Sun and, given their length, stem from objects having heights up to a few kilometers. The long shadows were unexpected given that the usual thickness of Saturn's A and B rings is only about 10 meters.
After considering the choppy but elongated shapes apparent near the B-ring edge, however, a leading theory has emerged that some kilometer-sized moonlets e [...]
As a mobile planetarium and science communication business, Cosmos Planetarium, we were looking for a unique and exciting way to engage hard to reach children. We wanted to give them the confidence to explore STEM subjects further and to realise …
What's happening near the south pole of Jupiter? Recent images sent back by NASA's robotic Juno spacecraft are showing an interesting conglomeration of swirling clouds and what appear to be white ovals. Juno arrived at Jupiter in July and is being placed into a wide, looping orbit that will bring it near the gas giant -- and over its poles -- about twice a month. The featured image is a composite taken by JunoCam and post-processed by a digitally savvy citizen scientist. White ovals have been ob [...]