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 ...

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

Venus has phases just like the moon. Before and after the conjunction, Venus looks like a thin crescent — though only telescopes can see it. Those looking for signs of the transition can watch Venus ...

Planetary alignments have always been a fascinating subject, both for scientists and astrology enthusiasts alike. The idea ...

Fellipe Abreu/Getty Images The planets are 20% to 30% the mass of Earth and make a full orbit around the sun in days, according to the paper. They are likely rocky planets, rather than gas.

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

Venus will pass nearly between the Earth and the Sun in an astronomical event known as an inferior conjunction. The moment ...

Researchers can see celestial snapshots with the James Webb Space Telescope, the most powerful ever launched, of the star ...

The orbit Venus takes around the sun periodically results in a phenomenon astronomers refer to as an inferior conjunction, ...

Last year, astronomers announced that a planet orbits Barnard’s star. Now, researchers have confirmed the existence of three more.

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...