Recent Articles

synopsis

A Laser-Free Method for Cooling Heavy Molecules

Electric deceleration brings a beam of the largest molecules yet to a standstill.   Read More »

Research News

Pluto’s Tilt Explains Ice Sheet’s History

Climate models based on changes in Pluto’s orbital tilt suggest that the dwarf planet’s heart-shaped ice sheet continues to undergo cycles of sublimation, condensation, and reorientation. Read More »

synopsis

Delaying Thermalization in a Periodically Driven System

Researchers have kept a Floquet system in a prethermal state for a record length of time. Read More »

synopsis

Close Passes Give Atoms Tiny Quantum Kicks  

A new technique in which atoms move slowly through a diffraction grating lets researchers measure the tiny Casimir-Polder interaction, a force that arises from quantum vacuum fluctuations. Read More »

Viewpoint

Quantum Control for Rydberg State Spectroscopy

Borrowing from techniques used for the quantum control of chemical reactions, researchers have developed a method to study the Rydberg states of molecular ions that are relevant to astrophysical plasma. Read More »

Focus

Dark Matter Alternative Passes Big Test

A cosmological model that doesn’t require dark matter has overcome a major hurdle in matching observations from the cosmic microwave background. Read More »

synopsis

Inducing a Curl with a Stretch

Patterning grooves into the surface of an elastic ribbon can cause the ribbon to curl into a tube shape when it is stretched. Read More »

Opinion

Evaluating the Role of Scientific Awards

Science prizes can motivate scientists to take risks and think outside the box, but data show that not all groups share in this motivating experience.      Read More »

Viewpoint

Measuring the Neutron Lifetime with Record-Breaking Precision

An improved version of a “bottle” experiment lets researchers lower the uncertainty on this important parameter—but a tantalizing discrepancy remains. Read More »

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