Light is everywhere, and it's made of photons,tiny particles that move at the speed of light through space, traveling vast ...

This hidden matter has been mapped using FRBs, intense millisecond-long pulses from galaxies located far away. With the help of 70 FRBs, which included one from 9 billion light years away, the ...

A new analysis of BL Lacertae by NASA’s Imaging X-ray Polarimetry Explorer sheds light on the emission mechanisms of active ...

Is black a colour? Black isn’t in the rainbow, but where does it fit in the colour spectrum? What makes something appear ...

Energy from the sun’s rays can cause skin damage and cancers. Sunscreens can absorb or reflect the dangerous UV light. Here’s ...

For the first time, researchers have seen how light behaves during a mysterious phenomenon called 'imaginary time'.

Physicists tested the Greenberger–Horne–Zeilinger (GHZ) paradox, which is at the heart of quantum theory, to measure light ...

A microquasar belonging to our Milky Way galaxy has set records by generating cosmic rays with energy levels never before ...

Light itself can be thought of not only as a wave but also as a stream of particles called photons. The amount of energy carried by each photon is related to its color. For example, blue and violet ...

The inner-shell X-ray lasing process is similar to optical lasing, just at a much shorter wavelength. An initial pulse of X-ray photons excites atoms' inner-shell electrons.

The problem for X-ray quantum imaging is that it has been hard to produce entangled photons efficiently. They are traditionally produced by passing a high energy beam through a non-linear medium, ...