The Japan Maritime Self Defense Force’s latest diesel-electric attack submarine was commissioned on March 5.
By Franz-Stefan Gady for The Diplomat.
A mind-bending new paper suggests our entire Milky Way galaxy could be located inside an enormous bubble where matter is much less dense than everywhere else.
If research bears the theory out, it’d mean that our galactic neighborhood is very different from the rest of the universe — and it could potentially solve a huge problem looming over the astrophysics field.
The House is preparing to vote on Thursday on a coronavirus-relief bill that would provide Americans with paid sick leave, food assistance, free coronavirus testing, and more substantial unemployment benefits.
But Ocasio-Cortez pushed for a more sweeping response, including expanding Medicare or Medicaid to cover all Americans, a freeze on evictions, a universal basic income, ending work requirements for food-assistance programs, criminal-justice reform, and freezing student-debt collection.
“This is not the time for half measures,” she tweeted on Thursday. “We need to take dramatic action now to stave off the worst public health & economic affects. That includes making moves on paid leave, debt relief, waiving work req’s, guaranteeing healthcare, UBI, detention relief (pretrial, elderly, imm).”
New imaging technique can visualize the dynamics of magnetic structures in three dimensions for the first time.
The behavior of one of nature’s humblest creatures is helping astronomers probe the largest structures in the universe.
The single-cell organism, known as slime mold (Physarum polycephalum), builds complex filamentary networks in search of food, finding near-optimal pathways to connect different locations. In shaping the universe, gravity builds a vast cobweb structure of filaments tying galaxies and clusters of galaxies together along faint bridges hundreds of millions of light-years long. There is an uncanny resemblance between the two networks: one crafted by biological evolution, and the other by the primordial force of gravity.
The cosmic web is the large-scale backbone of the cosmos, consisting primarily of the mysterious substance known as dark matter and laced with gas, upon which galaxies are built. Dark matter cannot be seen, but it makes up the bulk of the universe’s material. The existence of a web-like structure to the universe was first hinted at in the 1985 Redshift Survey conducted at the Harvard-Smithsonian Center for Astrophysics. Since those studies, the grand scale of this filamentary structure has grown in subsequent sky surveys. The filaments form the boundaries between large voids in the universe.
First wave 🌊.
Your questions answered — an update (11−03−2020): Professor Neil Ferguson on the current status of the COVID-19 Coronavirus outbreak, case numbers, intervention measures and challenges countries are currently facing.
Continue reading “Update on COVID-19 outbreak with Professor Neil Ferguson” »
SpaceX CEO Elon Musk says humanity needs a “whole new architecture” to fly in space beyond low Earth orbit.
SpaceX CEO Elon Musk explains why we need a ‘whole new architecture’ for space travel :
Despite the lack of official comment on the mission, China’s first expedition to Mars appears to be on track.
Permanent magnets akin to those used on refrigerators could speed the development of fusion energy—the same energy produced by the sun and stars.
In principle, such magnets can greatly simplify the design and production of twisty fusion facilities called stellarators, according to scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) and the Max Planck Institute for Plasma Physics in Greifswald, Germany. PPPL founder Lyman Spitzer Jr. invented the stellarator in the early 1950s.
Most stellarators use a set of complex twisted coils that spiral like stripes on a candy cane to produce magnetic fields that shape and control the plasma that fuels fusion reactions. Refrigerator-like permanent magnets could produce the hard part of these essential fields, the researchers say, allowing simple, non-twisted coils to produce the remaining part in place of the complex coils.
