Two BeiDou-3 satellites, once plagued by puzzling orbit errors, are now operating with newfound precision thanks to a breakthrough modeling strategy. 

For the first time, scientists have used Earth-based telescopes to look back in time over 13 billion years to get a clearer picture of one of the least understood epochs in the history of the universe, the Cosmic Dawn. 

In a paper published in Astronomical Techniques and Instruments, the Solar Close Observations and Proximity Experiments (SCOPE) mission will send a spacecraft into the solar atmosphere at a low altitude of just 5 R☉ from the solar center. It aims to elucidate the mechanisms behind solar eruptions and coronal heating, and to directly measure the coronal magnetic field.

SAN ANTONIO — June 10, 2025 — Southwest Research Institute’s Dr. Craig DeForest discussed the latest accomplishments of NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) mission during a media event at the 246th American Astronomical Society meeting in Anchorage, Alaska. As the spacecraft constellation completes commissioning, early PUNCH data showed coronal mass ejections, or CMEs, as they erupted from the Sun and traveled across the inner solar system.

Robert Brakenridge has spent decades trying to understand how distant exploding stars may have affected Earth’s atmosphere in the past. A new analysis indicates the need for continued research in the field.