Images from the New Horizons spacecraft suggest that light from all known galaxies accounts for only half of the cosmos’ visible background glow.

However, although photons of light existed since the first second after the Big Bang, they could not yet shine across the ...

Imagine waking up one day to find out you live inside a vast, invisible bubble — a region of space so vast it stretches a ...

A new study of the universe's background light suggests that as many as half its stars might be hidden in the space between galaxies.

New research calculates extragalactic background light over the universe's lifetime, shedding light on star-formation rates.

Before there was a single galaxy or star, before there was even the cosmic microwave background, the Universe was filled with light. At last, science knows why.

Missourians race to nearby firework business to purchase droves of fun surprises. Some large, some small. Either way, all ...

PUNCH sees first light, prepares to study how the Sun creates our space weather The constellation of four satellites can take both narrow- and wide-field images of the Sun to study its corona and ...

Furthermore, the quantum interferometer's sensitivity is much less impacted by background light. The measurement of the interference signal is taken in a narrow time window of the photons' arrival ...

LED light therapy for skin is trendy—but does it work? Dermatologists explain the science behind the wildly popular treatment, which is now available at home—for a steep price.

When they look at sky brightness—what they call the sky background—they use a unit of brightness per area of the sky: how much light is spread out over a given parcel of celestial real estate.

Nearly all background light can be filtered out because it does not arrive within that narrow window, meaning the quantum measurement remains highly sensitive.