Rotating objects carry angular momentum; this fact extends even to the tiniest of particles, such as photons. Photons possess not one but two distinct forms of angular momentum: spin angular momentum (SAM) and orbital angular ...
Optics & Photonics
Oct 18, 2023
0
58
To discover how light interacts with molecules, the first step is to follow electron dynamics, which evolve at the attosecond timescale. The dynamics of this first step have been called charge migration (CM). CM plays a fundamental ...
Optics & Photonics
Aug 25, 2023
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1027
Measuring the fuel supply on Odyssey, a decades-old spacecraft without a fuel gauge, is no easy task.
Space Exploration
Mar 15, 2023
0
33
The sun was in a good mood this week, or at least that's what it looked like in a photo published by NASA.
Astronomy
Oct 28, 2022
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48
NASA's water-scouting CubeSat is now poised to hitch a ride to lunar orbit. Not much bigger than a shoe box, Lunar IceCube's data will have an outsized impact on lunar science.
Planetary Sciences
Aug 8, 2022
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35
Theoreticians at the MPSD have demonstrated how the coupling between intense lasers, the motion of electrons, and their spin influences the emission of light on the ultrafast timescale. Their work has been published in npj ...
Condensed Matter
Jul 12, 2022
0
208
Electron motion in atoms and molecules is of fundamental importance to many physical, biological and chemical processes. Exploring electron dynamics within atoms and molecules is essential for understanding and manipulating ...
Optics & Photonics
Jul 1, 2021
0
2
Discovered in 2004, Haumea is a dwarf planet located beyond Pluto's orbit in a region of the solar system called the Kuiper Belt. Pluto was demoted from the category of fully fledged planets in 2006 because of the discovery ...
Astronomy
May 8, 2019
3
350
On the evening of March 6, 2019, the Moon started to transit the Sun, then doubled back and retraced its steps in the other direction—at least, that's what it looked like from the perspective of NASA's Solar Dynamics Observatory, ...
Space Exploration
Mar 7, 2019
0
136
A new model of the moon's rotational dynamics—the first that takes into account the moon's solid inner core—helps explain why it appears to wobble on its axis.
Space Exploration
Dec 19, 2018
0
115
