The galaxy that hosts the Solar System
Scientists have captured the Sun’s surface at unprecedented resolution with the Daniel K. Inouye Solar Telescope and other instruments and have identified widespread Kelvin–Helmholtz vortices—500–2,000km spirals of magnetised plasma. The team has linked these instabilities to how magnetic energy cascades to smaller scales and feeds flares and coronal mass ejections that produce space weather.
The Nancy Grace Roman Space Telescope has launched from Kennedy Space Center aboard a SpaceX Falcon Heavy and has separated cleanly. The observatory is travelling toward Lagrange point 2, about one million miles from Earth, for a five‑year primary mission to map billions of galaxies, search for exoplanets and study dark matter and dark energy.
NASA has launched the Nancy Grace Roman Space Telescope aboard a Falcon Heavy, with a field-of-view more than 100 times wider than Hubble. The bus-sized telescope is heading to a point roughly 1 million miles from Earth to study dark energy, dark matter, and thousands of new worlds, while working with Webb and other observatories. It will take months to reach its destination and will begin rapid, wide-area observations.
Recent findings show white dwarfs can display vibrant colors beyond their expected white glow, with a green WD reflecting light altered by atmospheric elements. A second-generation planet around a dying star is also a possibility under investigation, prompting questions about planetary formation around white dwarfs.
Leaders of the world’s timekeeping bodies have voted to replace leap seconds with a leap hour, aiming to reduce glitches in computers and infrastructure. The move, supported by delegates from 69 countries, would shift UTC adjustments from occasional seconds to occasional hours, with implementation possible next year and effects unlikely to materialize for thousands of years.