NASA telescopes deliver stellar bouquet in time for Valentine's day
A bouquet of thousands of stars in bloom has arrived. This composite image contains the deepest X-ray image ever made of the ...
Q&A: Quantum state of photoelectrons measured for the first time
For the first time, researchers have been able to measure the quantum state of electrons ejected from atoms that have absorbed high-energy light pulses. This is thanks to a new measurement technique ...