SpaceFlight Insider 19 Sep 2018, 02:30 UTC A study of surface features on Ceres as revealed by NASA’s Dawn spacecraft indicates the dwarf planet experienced cryovolcanism in its past, with individual ice volcanoes having spewed large amounts of material onto the dwarf planet’s surface.
Astro Bob 18 Sep 2018, 21:13 UTC Last night the moon shone to the left of Saturn. Tomorrow night, it will be in conjunction with Mars, gliding only 4° to its north. Although fading a bit, Mars is still a couple tenths of a magnitude brighter than Sirius, the brightest star, and maintains its eye appeal as we head toward the first day of fall. When you’re out moongazing, a pair binoculars magnifying 10x will easily show craters, particularly along the terminator, where sunlight strikes the moon’s surface at a glancing angle. The combination of sun-struck highlights and long shadows helps to outline and clearly define these enormous impact holes.
Starts With a Bang! 18 Sep 2018, 14:01 UTC It was a mere 20 years ago that our picture of the Universe got a stunning revision. We all knew our Universe was expanding, that it was full of matter and radiation, and that most of the matter out there couldn’t be made of the same, normal stuff (atoms) that we were most familiar with. We were trying to determine, based on how the Universe was expanding, what our fate was: would we recollapse, expand forever, or be right on the border between the two?
Space-For-All at HobbySpace 18 Sep 2018, 04:59 UTC On Monday evening at the SpaceX HQ in Hawthorne, Calfornia, Elon Musk introduced billionaire entrepreneur and art collector Yusaku Maezawa, as the mystery space tourist who has reserved a BFR (Big Falcon Rocket) for a flyby trip around the Moon. (See previous posting.) The flight could happen as early as 2023.
NASA Space Station Blog 17 Sep 2018, 19:49 UTC The Expedition 56 crew members started the work week exploring a variety of life science and ensuring the upkeep of advanced space research gear. U.S. spacesuits were also being looked at today ahead of series of planned spacewalks.
astrobites 17 Sep 2018, 18:21 UTC Our story begins on a bright and not-so stormy brown dwarf. Now brown dwarfs are themselves mysterious objects, but CWW 89Ab is especially odd. But let’s start at the beginning; why are brown dwarfs mysterious? It is theorized that brown dwarfs form similarly to main-sequence stars; a gas cloud collapses, heats up, and eventually ignites. However, brown dwarfs do not have a high enough mass to start fusing hydrogen like a star and instead are left fusing deuterium. Over time, these objects cool off and start to dim and fade away.
Starts With a Bang! 17 Sep 2018, 14:01 UTC The Milky Way is our cosmic home, containing hundreds of billions of stars across 100,000 light-years. But 2.5 million light years away, our big sister, Andromeda, outclasses us in every way.
Parabolic Arc 17 Sep 2018, 07:58 UTC When astronauts land again on the surface of another world, their limited resources will allow for a short window of time each day to explore their new surroundings. Instruments designed to quickly reveal the terrain’s chemistry and form will help them understand the environments around them and how they change over time.