An artist's impression of the new pure and massive brown dwarf.
Credit: John Pinfield
An international team of astronomers has identified a record breaking brown dwarf (a star too small for nuclear fusion) with the 'purest' composition and the highest mass...
Hubble Space Telescope image of the field containing a massive foreground galaxy cluster, MACSJ0717.5+3745. Pope and colleagues' dusty galaxy is denoted by the red squares which show three images of the same gravitationally lensed background galaxy. A zoom in...
Portals can allow the exploration of the dark sector with the Standard Model particles Portals mix or connect the dark sector particles with the Standard Model particles. Through the portals it is possible to explore the dark sector particles...
This image, taken by NASA's Hubble Space Telescope, reveals an unusual sight: a runaway quasar fleeing from its galaxy's central hub. A quasar is the visible, energetic signature of a black hole. Black holes cannot be observed directly, but...
Artist impression of a progenitor of Milky Way-like galaxy in the early universe with a background quasar shinning through a 'super halo' of hydrogen gas surrounding the galaxy. New ALMA observations of two such galaxies reveal that these vast...
Scientists have discovered that a sphere of cold helium atoms (in green) -- interacting with a surrounding larger container of the same kind of atoms (in blue) -- follows a bizarre rule of physics, called an entanglement area law,...
Van Allen Probes circle radiation belts. This artist's rendering of the Van Allen Probes mission shows the path of its two spacecraft through the radiation belts that surround Earth, which are made visible in false color.
Credit: NASA
The inner Van...
This image from Hubble's Wide Field Camera 3 (WFC3) shows a section of NGC 1448, a spiral galaxy located about 50 million light-years from Earth in the little-known constellation of Horologium (The Pendulum Clock).
Credit: ESA/Hubble & NASA
This image from...
This composite of enhanced color images of Pluto (lower right) and Charon (upper left), taken by NASA's New Horizons spacecraft on July 14, 2015, highlights the wide range of surface features on the small worlds.
Credit: NASA/JHUAPL/SwRI
Johns Hopkins University scientist...
In connection with violent solar eruptions, large variations occur in electron density in the ionosphere over Greenland, which interferes with GPH navigation signals as well as flight and satellite communication. For the first time ever, researchers from DTU have...
During a strong geomagnetic storm, electrons at relativistic energies, which are usually only found in the outer radiation belt, are pushed in close to Earth and populate the inner belt. While the electrons in the slot region quickly decay,...
