Science February 20, 2021
Sounding Rocket CLASP2 Elucidates Solar Magnetic Field
Cooperative operations between a solar observation satellite and a sounding-rocket telescope have measured the magnetic field strength in the photosphere and chromosphere above an active solar plage region.
Science February 16, 2021
Supercomputer Turns Back Cosmic Clock
Astronomers have tested a method for reconstructing the state of the early Universe by applying it to 4000 simulated universes using the ATERUI II supercomputer at NAOJ. They found that together with new observations the method can set better constraints on inflation.
Science January 26, 2021
When galaxies collide—Models suggest galactic collisions can starve massive black holes
It was previously thought that collisions between galaxies would necessarily add to the activity of the massive black holes at their centers. However, researchers have performed the most accurate simulations of a range of collision scenarios and have found that some collisions can reduce the activity of their central black holes.
Science December 18, 2020
Compressive Fluctuations Heat Ions in Space Plasma
New simulations carried out in part on the ATERUI II supercomputer in Japan have found that the reason ions exist at higher temperatures than electrons in space plasma is because they are better able to absorb energy from compressive turbulent fluctuations in the plasma.
Science December 8, 2020
Study Confirms Dark Coating Can Reduce Satellite Reflectivity
Observations conducted by the Murikabushi Telescope of Ishigakijima Astronomical Observatory confirmed that dark coating can reduce satellite reflectivity by half.
Science November 26, 2020
Earth Faster, Closer to Black Hole in New Map of Galaxy
Earth just got 7 km/s faster and about 2000 light-years closer to the supermassive black hole in the center of the Milky Way Galaxy. But don...
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Science October 28, 2020
Galaxies in the Infant Universe were Surprisingly Mature
Massive galaxies were already much more mature in the early universe than previously expected.
Science October 12, 2020
Studying the Sun as a Star to Understand Stellar Flares and Exoplanets
The sunspots cause some emissions to dim and others to brighten; the timing of the changes also varies between different types of emissions. This knowledge will help astronomers characterize the conditions of stars, which has important implications for finding exoplanets around those stars.
Science September 29, 2020
Second Alignment Plane of Solar System Discovered
Analytical investigation of the orbits of long-period comets shows that the aphelia of the comets, the point where they are farthest from the Sun, tend to fall close to either the well-known ecliptic plane where the planets reside or a newly discovered “empty ecliptic.”
Science September 25, 2020
Pair of Massive Baby Stars Swaddled in Salty Water Vapor
Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers spotted a pair of massive baby stars growing in salty cosmic soup.