June 2021 Issue of Physics Today Has Arrived!
Hua Liu American Astronomical Society (AAS)
Physics Today, the flagship publication of the American Institute of Physics (AIP), is the most influential and closely followed physics magazine in the world. With authoritative features, full news coverage and analysis, and fresh perspectives on technological advances and groundbreaking research, Physics Today informs readers about science and its role in society. Members of the AAS, an AIP Member Society, automatically receive free print and online subscriptions to the magazine. Physics Today Online, the magazine’s internet home, presents an enhanced digital edition and provides a valuable online archive.
Polarized Light Shows Hot Gas Swirling around a Galactic Core
The images of galaxy Messier 87 provide evidence of magnetic field lines in its innermost region. Those lines likely trace the event horizon of a supermassive black hole. — Rachel Berkowitz
Living Cells on the Move
Spectacular collective phenomena, such as jamming, turbulence, wetting, and waves, emerge when living cells migrate in groups. — Ricard Alert & Xavier Trepat
Drops in Cells
Liquid droplets act as microreactors. Can they also serve as a control mechanism for cellular biochemistry? — Christoph Weber & Christoph Zechner
Muon Measurements Embolden the Search for New Physics
Evidence is mounting that the value of the particle’s anomalous magnetic moment cannot be predicted by the best-available theory. — Christine Middleton
Should Solar Geoengineering Be Part of How Humanity Counters Climate Change?
Moving forward requires research and international and intergenerational participation. — Toni Feder
The Air We Breathe in a Car
Your typical commute hides complex fluid-dynamical pathways of disease transmission. Where you sit and the windows you open could heighten or suppress the risk of airborne infection. — Varghese Mathai