In 1990, it was observed in eruption again, which made it the first extragalactic recurrent nova ever observed, with eruptions occurring like clockwork every ... "Emission lines are formed when an ...

There are many different types of lasers—almost as many as there are applications for the same—but what ties them all ...

GS-z13-1, marks the earliest sign yet spotted of the era of cosmic reionization at 330 million years after the Big Bang.

In a neutral atom ... every electron emitting THz radiation in a particular direction there will be another electron emitting in exactly the opposite direction — the overall result is no THz ...

As the world contemplates the fifth anniversary of the COVID-19 pandemic, I am reminded that we’re not the only generation to ...

Newton proposed that every time light rays strike a surface ... of the numerous EM waves that form the electromagnetic spectrum. Later, in 1886, Heinrich Hertz built a spark-gas transmitter ...

Photoluminescent materials are more than just the glow-in-the-dark stars your parents glued to your bedroom ceiling as a ...

In 1990, it was observed in eruption again, which made it the first extragalactic recurrent nova ever observed, with eruptions occurring like clockwork every four years. "In systems like LMC68 ...