Our planet's closest and brightest neighbor will pass approximately between the Earth and sun this week, in what's called an ...

Prior to 2040, the last planetary quintuplet occurred in the year 1186, and according to Uptain, records show that the close ...

"As the large and bright discs are the easiest to observe, our previous view of the birth site of planets was biased." ...

We've known for over 30 years that there are other stellar systems in our galaxy, but we don't have any idea how many there ...

Pollard A quartet of Earth-like worlds, each about 20% to 30% the size of our planet, circle one of our closest ... orbiting ...

Everyone's favorite dwarf planet, Pluto, was discovered just 95 years ago. Here's the story of how the once-ninth planet was ...

The orbit Venus takes around the sun results in an inferior conjunction as it transitions from appearing in the evening sky ...

Astronomers had observed auroras on all other planets in the Solar System, and spotting one in Neptune completes the list.

Venus has phases just like the moon. Before and after the conjunction, Venus looks like a thin crescent — though only ...

For centuries, humans have wondered if planets exist around other stars and dreamed of ... nor were they orbiting a star like the sun, but they were confirmed to exist. It was the first evidence ...

The search for habitable planets has taken a leap forward with new space telescopes probing exoplanet atmospheres for life.