Physics Awards: October 2023

Saturday, October 14, 2023

NASA launches $1.2bn Psyche asteroid mission

NASA has launched a mission to study an unusually metal-rich asteroid dubbed 16 Psyche. Launched from the Kennedy Space Center in Florida at 10:20 local time today via a SpaceX Falcon Heavy rocket, the $1.2bn mission is expected to reach the asteroid in 2029.

16 Psyche is around 220 km in diameter and consists of almost pure nickel–iron metal. It was discovered in 1852 by Italian astronomer Annibale de Gasparis, who named it after the goddess of the soul in ancient Greek mythology. Located in the asteroid belt between Mars and Jupiter, astronomers speculate that the asteroid is the exposed core of an early planet that lost its rocky outer layers due to a number of violent collisions billions of years ago.

In 2021, astronomers used the Atacama Large Millimeter/Submillimeter Array (ALMA) to gain a more detailed picture of the composition of the asteroid finding that Psyche’s composition is not uniform and its surface is at least 30% metal.

The Psyche mission will help scientists understand how planets and other bodies separated into layers – including cores, mantles and crusts. On it way to the asteroid — a total journey of 3.6 billion kilometres — the craft will conduct a Mars fly-by in 2026. Once Psyche arrives at the asteroid in 2029 it will spend over two years analysing the body from four different orbit that get successively closer.

It will use a gamma-ray and neutron spectrometer to determine the chemical elements that make up the body as well as a multispectral imager to provide information about the mineral composition of Psyche as well as its topography. It will use a magnetometer to look for evidence of an ancient magnetic field. The craft will also test a new laser communication technology, called Deep Space Optical Communication.

Launch delays

The mission was originally expected to launch in 2022 but was delayed due to issues with its navigational software. An independent review board found later that year that the delay was caused by staff shortages at Caltech’s Jet Propulsion Laboratory, which manages the mission.

International Research Conference on High Energy Physics and Computational Science

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Thursday, October 12, 2023

Understanding Attoseconds: The Tiny Time Scale Behind Nobel Prize-Winning Research

Three researchers were awarded the 2023 Nobel Prize in physics for their groundbreaking work in studying electrons using attosecond-long flashes of light. These infinitesimally short light pulses have enabled scientists to observe rapid electron movements, especially during processes like the breaking of chemical bonds.

The 2023 Nobel Prize in physics recognized three researchers for their work with attosecond light pulses, revolutionizing the study of rapid electron movements and broadening understanding in various fields of physics and chemistry.

A group of three researchers earned the 2023 Nobel Prize in physics for work that has revolutionized how scientists study the electron – by illuminating molecules with attosecond-long flashes of light. But how long is an attosecond, and what can these infinitesimally short pulses tell researchers about the nature of matter?