Heart of darkness: A view of the accretion disc around the supermassive black hole, with jet-like structures flowing away from the disc. The extreme mass of the black hole bends spacetime, allowing the far side of the accretion disc to be seen as an image above and below the black […]

Two groups of fibrils, marked L2 and L4, converge and reconnect with each other. Two sets of newly formed fibrils, marked L1 and L3, then appear and retract from the reconnection region. Credit: LI Leping   ENLARGE Magnetic reconnection refers to the reconfiguration of magnetic field geometry. It plays an elemental […]

Journey of water from interstellar clouds to habitable worlds. From top left to bottom right: water in a cold interstellar cloud, near a young, forming star with an outflow, in a protoplanetary disc, in a comet and in the oceans of an exoplanet. The first three stages show the spectrum […]

The Perseverance rover used its SuperCam laser to study this strange green rock on Mars. (Image credit: NASA/JPL-Caltech) Perseverance’s laser hasn’t yet penetrated the mystery of a strange Martian rock near the rover’s new digs. NASA’s rover is waiting for its companion, the Ingenuity helicopter, to make the first-ever powered flight on […]

Photons with an energy of 200 teraelectronvolts are most likely emitted by protons colliding with interstellar gas. The primary source of protons is pulsar HAWC J1825-134 (in the orange circle), the role of the actual accelerator is played by the star cluster [BDS2003] 8 (dark blue). Credit: HAWC For years, […]

Neptune and Uranus are the outermost two planets of our solar system and two gas giants. Credit: NASA Uranus and Neptune both have a completely skewed magnetic field, perhaps due to the planets’ special inner structures. But new experiments by ETH Zurich researchers now show that the mystery remains unsolved. The two large […]