February brings a rare planetary parade, with five bright planets in clear view and a special alignment of Mercury and Saturn ...

Venus, Jupiter, and Mars dominate the sky. Catch your last views of Saturn as early in the month, the Moon passes in front of ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

Mars, Venus, Jupiter, and Saturn should be visible to the naked eye. The six planets will be visible until February 9. You'll ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

A team of astronomers have discovered a rather curious exoplanetary system that has two gas giant planets that are messing up each other’s orbit! On of them is 3.8 times the mass of Jupiter and ...

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

HELENA — The planets are aligned. Six planets, Mars, Jupiter, Uranus, Neptune, Venus and Saturn can be seen in the night sky.

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

But according to an international team of researchers, including some from the University of Geneva, in a study published ...

Four planets will be in the parade in January while seven will align in February. Here's how to see the events.