Physics

An example spectrum from MMT-Hectochelle for a member of Theia 456 (Gaia DR3 191357324369704448) in black and the corresponding MINESweeper fit to the spectrum in purple. The residuals are shown in the upper panel. Credit: Tregoning et al., 2024. Using ESA’s Gaia satellite and the MMT Observatory, astronomers have investigated a special stream of stars…

Credit: Nano Letters (2024). DOI: 10.1021/acs.nanolett.4c00694 Lenses are used to bend and focus light. Normal lenses rely on their curved shape to achieve this effect, but physicists from the University of Amsterdam and Stanford University have made a flat lens just three atoms thick that relies on quantum effects. This type of lens could be…