On August 8, 2024, the U.S. National Science Foundation (NSF) Daniel K. Inouye Solar Telescope captured the sharpest-ever images of a solar flare at the H-alpha wavelength (656.28 nm), revealing dark coronal loop strands in unprecedented detail. The observations, made during the decay phase of an X1.3-class flare, measured loop widths averaging 48.2 km, with some even half as narrow. By using the Inouye Solar Telescope to isolate light at the H-alpha wavelength, emitted by hydrogen atoms, solar physicists can identify fine structures in the lower solar atmosphere too small to observe in the past—offering a potential breakthrough in determining the fundamental scale of coronal loops and advancing solar flare modeling. By improving researchers’ ability to model solar flares, these observations will also improve forecasting for space weather events that are hazardous to satellites, power grids, and communications on Earth.

The development of highly complex chemical systems, self-assembled by the donor-acceptor and/or noncovalent interactions, lays at the core of supramolecular chemistry. Recently, increasing attention has been paid to structurally adaptable molecular systems and robust noncovalent microporous materials (NPMs), also known as molecular porous materials (MPMs) or porous molecular crystals (PMCs), based on the self-assembly of discrete molecules driven by weak interactions The utilization of molecular metal clusters as building units of NPMs is a promising strategy, combining the versatile functionality of organic and inorganic subunits with the softness and flexibility of molecular solids controlled by noncovalent interactions. However, the development of robust porous functional frameworks based on self-assembly driven by noncovalent forces is still highly challenging.

Scientists have devised a new method for mapping the spottiness of distant stars by using observations from NASA missions of orbiting planets crossing their stars’ faces. The model builds on a technique researchers have used for decades to study star spots. By improving astronomers’ understanding of spotty stars, the new model — called StarryStarryProcess — can help discover more about planetary atmospheres and potential habitability using data from telescopes like NASA’s upcoming Pandora mission.

Harvard researchers have created an electro-optic digital-to-analog converter that bridges electronic and photonic signals for efficient photonic computing and signal processing.

Rice’s Martí, Sarlah, Wang honored with national American Chemical Society awards.

Researchers at ORNL have found that the geographic origin of poplar trees influences their cell wall chemistry, affecting the way the trees adapt to environmental changes. The discovery revealed a correlation between latitude and the expression of lignin, a plant polymer, which is responsible for plant structure and support.