Figure 1. The process of solar flare production in the physics-based prediction method. A: Electric currents flow along magnetic field lines across the magnetic polarity inversion line on the solar surface, where the magnetic field changes its polarity. B: Magnetic field lines are reconnected and form a double-arc loop that […]

The KunLun Differential Image Motion Monitors atop the 8-meter high tower at Dome A, Antarctica. Credit: Zhaohui Shang Dome A, the highest ice dome on the Antarctic Plateau, could offer the clearest view on Earth of the stars at night, according to new research by an international team from China, […]

New observations by the NASA/ESA Hubble Space Telescope suggest that the unexpected dimming of the supergiant star Betelgeuse was most likely caused by an immense amount of hot material that was ejected into space, forming a dust cloud that blocked starlight coming from the star’s surface. This artist’s impression was […]

Artist’s impression of one of this study’s superlative discoveries, the oldest known wide-separation white dwarf plus cold brown dwarf pair. The small white orb represents the white dwarf (the remnant of a long-dead Sun-like star), while the brown/orange foreground object is the newly discovered brown dwarf companion. This faint brown […]

An artist’s representation of the Phoenix Stellar Stream. Originally a ball of stars, known as a globular cluster, Phoenix has been stretched into a stream of stars by the gravitational pull of the Milky Way. In a few billion years, Phoenix will be completely destroyed and absorbed into our galaxy. […]

An artist’s impression of the quasar Pōniuāʻena. Astronomers discovered this, the second most distant quasar ever found, using the international Gemini Observatory and Cerro Tololo Inter-American Observatory (CTIO), Programs of NSF’s NOIRLab. It is the first quasar to receive an indigenous Hawaiian name. In honor of its discovery from Maunakea, […]

Animation As dying stars take their final few breaths of life, they gently sprinkle their ashes into the cosmos through the magnificent planetary nebulae. These ashes, spread via stellar winds, are enriched with many different chemical elements, including carbon. Findings from a study published on July 6, 2020, in Nature Astronomy show […]

KyotoU’s new Seimei telescope detects enormous ‘superflare’ on nearby star The cold, dark chaos of space is filled with mystery. Fortunately, the ways in which we can peer into the mists of the void are increasing, and now include Kyoto University’s 3.8 meter Seimei telescope. Using this new instrument — […]

Neutron star nebula. Credit: NASA/CXC/SAO: X-ray; NASA/JPL-Caltech: Infrared Most massive stars are born in binaries (and sometimes triples, quadruples, and so on—being single isn’t common for such rock stars!) As stars age, they grow larger in size, and not just a little thickening of the waistline, but a hundred-fold or […]

Credit: NASA/CXC/M. Weiss Astronomers have reported the first detection of X-rays from the earliest phase of evolution of a star like our Sun. This discovery from NASA’s Chandra X-ray Observatory may help answer questions about the Sun and Solar System as they are today. The X-ray flare came from the young […]