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

Q: Why do the planets all orbit the Sun in the same plane? —Randi Eldevik | Stillwater, Oklahoma Because of the way the Sun formed, explains David DeVorkin, a senior curator in the space history ...

The planets will appear to line up — but no more than usual. The planets in our solar system orbit the sun in more or less the same flat plane as the Earth, according to EarthSky.org ...

Despite reaching a huge greatest elongation of 27 degrees west of the sun ... as bright compared to its dazzling neighbor. Editor's Note: If you get a great photo of any of the planets and ...

Barnard’s Star is an old M dwarf star, much smaller and much cooler than our Sun. Very few planets smaller than Earth have been found at all so the fact this nearby star has four is curious.

According to new simulations, many, even most, planets get ejected from their star early in their history Star Trek Space:1999 free-floating planets, As J.R.R. Tolkien wrote in The Fellowship of the ...

Astronomers have long suspected that there was at least one exoplanet orbiting Barnard's Star — a red dwarf with a mass around one-sixth that of the sun ... (Five potential planets have also ...

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 are.

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles ...

Discover details about the giant planet K2-18 b that has been found to have the presence of specific gases in its atmosphere, ...

Last weekend, the sun released two separate eruptions, each hurling a coronal mass ejection (CME) towards Earth.