New Scientist 18 Sep 2019, 17:42 UTC There’s a cosmic snowball fight going on in the Saturn system. The planet’s inner moons are oddly bright, and it may be because one of the moons a little further out is spewing pristine snow at them.
Astro Watch 18 Sep 2019, 13:09 UTC Astronomers using one of the most advanced radio telescopes have discovered a rare molecule in the dust and gas disc around a young star - and it may provide an answer to one of the conundrums facing astronomers. The star, named HD 163296, is located 330 light years from Earth and formed over the last six million years.
The Most Massive Neutron Star has been Found. It’s ALMOST the Most Massive Neutron Star That’s Even Possible17 Sep 2019, 22:21 UTC Neutron stars are the end-state of massive stars that have spent their fuel and exploded as supernovae. There’s an upper limit to their mass, because a massive enough star won’t become a neutron star; it’ll become a black hole. But finding that upper mass limit, or tipping point, between a star that becomes a black hole and one that becomes a neutron star, is something astronomers are still working on.
Astro Watch 17 Sep 2019, 21:40 UTC Neutron stars are the end-state of massive stars that have spent their fuel and exploded as supernovae. There’s an upper limit to their mass, because a massive enough star won’t become a neutron star; it’ll become a black hole. But finding that upper mass limit, or tipping point, between a star that becomes a black hole and one that becomes a neutron star, is something astronomers are still working on.
NASA Space Station Blog 17 Sep 2019, 17:15 UTC The six residents aboard the International Space Station continued more biomedical science and rodent research to improve human health on Earth and in space. The Expedition 60 crew is also gearing up for a crew swap beginning next week.
SPACE.com 17 Sep 2019, 11:00 UTC The universe is a choreography of many celestial pirouettes. The moon orbits the Earth, which travels around the sun, and our parent star also moves about our galaxy. And beyond the border of the Milky Way lies a fascinating satellite galaxy that's dancing around our galactic home and taking center stage in new imagery.
Universe Today 16 Sep 2019, 18:19 UTC Despite the many, many problems we face in the world today, it is still an exciting time to be alive! As we speak, mission planners and engineers are developing the concepts that will soon take astronauts on voyages beyond Low Earth Orbit (LEO) for the first time in almost fifty years. In addition to returning to the Moon, we are also looking further afield to Mars and other distant places in the Solar System. This presents a number of challenges, not the least of which are the effects of prolonged exposure to radiation and microgravity. And whereas there are many viable options for protecting crews from radiation, gravity remains a bit of a stumbling block. To address this, Youtuber smallstars has proposed a concept that he calls the Gravity Link Starship (GLS), a variation of SpaceX’s Starship that will be able to provide its own artificial gravity.
Centauri Dreams 16 Sep 2019, 16:51 UTC The arrival of an apparent interstellar visitor, the comet now designated C/2019 Q4 (Borisov), invariably calls to mind the all too swift passage of ‘Oumuamua through our skies in 2017. Detected 40 days after perihelion, the object was headed out of the Solar system when discovered, making observation time limited and the prospects of visiting it with a probe problematic. Nonetheless, Andreas Hein and colleagues at the Initiative for Interstellar Studies put out a mission concept we reviewed in these pages. To refresh your memory, see Project Lyra: Sending a Spacecraft to 1I/’Oumuamua (formerly A/2017 U1), the Interstellar Asteroid).