Previous studies may have underestimated how much Mercury has contracted as the planet cooled over billions of years because its rough surface hides some of the geological evidence.

The FAST All Sky HI Survey (FASHI) team has released its second data set (DR2), cataloging 156,411 extragalactic neutral hydrogen (HI) sources over ~19,500 square degrees — nearly half the entire sky. The number of detected sources is nearly four times that of the first data release (DR1) and five times that of the Arecibo ALFALFA survey. With a median sensitivity of 0.57 mJy/beam, FASHI DR2 represents the largest and most sensitive blind HI survey ever conducted, providing a landmark dataset for studies of galaxy evolution, cosmology, and large scale structure in the local Universe.

Sun-like stars can release more energy in massive solar flares than trillions of hydrogen bombs. Researchers at the Max Planck Institute for Solar System Research (MPS) have found new evidence that our star can hold its own as compared to other stars. Dark regions on the Sun are often the starting points for solar flares. The larger the sunspot, the more powerful its explosive potential. The giant sunspot of 1947 had enough energy to trigger a superflare. The Sun is therefore, in principle, capable of producing superflares. 

The results help assess the impact of space storms on Mercury's surface and on Earth's atmosphere. These are the first Mercury results from the SIXS instrument, which was designed and built in Finland.

Chiba University and a Finnish wireless power company will study how wireless power behaves inside an enclosed space as devices enter, leave, and change operating conditions.

An international team led by the Institute of Astrophysics of Andalusia (IAA-CSIC) demonstrates for the first time that the two rings of this small Solar System body are changing in opposite directions. The results come from the first stellar occultation specifically planned for and successfully observed with the James Webb Space Telescope (JWST)