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 […]

An artist’s impression of a “string” passing near a black hole. As the string approaches the black hole, it is gradually stretched. Then, as it moves past the black hole, it begins to vibrate. The image to the left, which was captured by the Event Horizon Telescope, represents the shadow […]

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, […]

Trapped anti-atoms being cooled. Credit: Chukman So The result opens the door to considerably more precise studies of the response of antimatter to light and of how it behaves under the influence of gravity. Swansea University physicists, as leading members of the ALPHA collaboration at CERN, have demonstrated laser cooling of […]

Figure 1. Distribution of the ultra-high-energy gamma rays (yellow points) detected by the Tibet ASγ experiment in the galactic coordinate system. They are obviously concentrated along the galactic disk. The gray shaded area indicates what is outside of the field of view. The background color shows atomic hydrogen distribution in […]

The entire arc of Milky Way, full of gas and dust, star clusters and emission nebulae, is a luminous background for the ESO-operated Very Large Telescope (VLT). Credit: M. Claro/ESO Until now, Europe has had two major collaborative networks for ground-based astronomy, one in the optical wavelength domain and the […]

ANIMATION Jovian jet streams above the cloud tops measured using the aftermath of comet collision. Working with a team led by French astronomers, Southwest Research Institute scientists helped identify incredibly powerful winds in Jupiter’s middle atmosphere for the first time. The team measured molecules exhumed by the 1994 impact of comet […]