Tags: stars

How Much Starlight Has Been Emitted Since the Beginning of Time?

Here’s a mind-blowing figure for you: 4,000,000,000,000,000,000,000,000,000,000,000,000,000,000, 000,000,000,000,000,000,000, 000,000,000,000,000,000,000. In case you’re wondering what all those digits signify, that’s the number of photons — more compactly expressed as 4 x...

Alien planet may lurk near failed stars

Astronomers have spotted signs of a possible exoplanet in a nearby system of twin failed stars. If confirmed, the alien world would be one of the closest to our sun...

Four Exoplanets Found Orbiting Nearby Stars

Two of the extrasolar planets are considered super-Earths, more massive than Earth but less massive than Uranus and Neptune. Spotting true Earth-sized planets is challenging with current technology, but the...

How Stars Work

It’s a dark, clear, moonless night. You look up into the sky. You see thousands of stars arranged in patterns or constellations. The light from these stars has traveled great...