Astronomers using the Subaru Telescope's Hyper Suprime-Cam prime-focus camera recently observed the nearby large spiral galaxy M81, together with its two brightest neighbors, M82 and NGC3077. The results of their observations are deep, super wide-field images of the galaxies and their populations of young stars.
As part of a Galactic Archaeology study, the team discovered that the spatial distribution of the young stars around these galaxies follows very closely that of their distribution of [...]
Circinus X-1 is an X-ray binary star known for its erratic variability. In the bizarre Circinus X-1 system, a dense neutron star, the collapsed remnant of a supernova explosion, orbits with a more ordinary stellar companion. Observations of the X-ray binary in months following an intense X-ray flare from the source in 2013 progressively revealed striking concentric rings - bright X-ray light echoes from four intervening clouds of interstellar dust. In this X-ray/optical composite, the swaths of [...]
Two Expedition 44 astronauts worked on important medical studies today while a pair of Russian spacewalkers checked out their spacesuit systems.
Flight Engineers Kjell Lindgren of NASA and Japanese astronaut Kimiya performed vision tests and blood pressure measurements as part of ongoing Ocular health checkouts. Lindgren also reviewed procedures for the Cardio Ox study that looks for any cardiovascular health risks associated with long duration spaceflight.
Yui also continued preparing com [...]
A super-dense star formed in the aftermath of a supernova explosion is shooting out powerful jets of material into space, research suggests.
In a study published today, a team of scientists in the Australia and the Netherlands discovered powerful jets blasting out of a double star system known as PSR J1023+0038.
“Gas can then flow from the companion star to the neutron star or black hole, producing spectacular displays when some of the material is blasted out in powerful jets at close [...]
High above the plane of our solar system, near the asteroid-rich abyss between Mars and Jupiter, scientists have found a unique family of space rocks. These interplanetary oddballs are the Euphrosyne (pronounced you-FROH-seh-nee) asteroids, and by any measure they have been distant, dark and mysterious -- until now.
Distributed at the outer edge of the asteroid belt, the Euphrosynes have an unusual orbital path that juts well above the ecliptic, the equator of the solar system. The asteroid a [...]
Well over a thousand galaxies are known members of the Virgo Cluster, the closest large cluster of galaxies to our own local group. In fact, the galaxy cluster is difficult to appreciate all at once because it covers such a large area on the sky. This careful wide-field mosaic of telescopic images clearly records the central region of the Virgo Cluster through faint foreground dust clouds lingering above the plane of our own Milky Way galaxy. The cluster's dominant giant elliptical galaxy M87, i [...]