The galaxy resembling Christmas lights hanging in the cosmos has space scientists feeling festive ...

The speed of light – the fastest speed in the universe – reveals mind-blowing truths about reality. Why does this limit exist ...

Year? A light-year is the distance light travels in one year. Light moves incredibly fast — about 186,000 miles (300,000 ...

At the boundary between the observable universe and the great unknown lies the cosmic event horizon, the greatest comoving distance from which any light emitted today can ever reach the observer ...

This, together with satellite measurements of the fraction of the universe’s first light, known as the Cosmic Microwave Background (CMB), that is scattered by electrons freed during reionization ...

The young galaxy is only 6,500 light years from its first companion and 42,000 light years from its second. In comparison, the fully formed Milky Way is 100,000 light years across and could easily fit ...

Findings based on two years of Webb telescope observations Data shows universe expanding 8% faster than expected WASHINGTON — ...