Mars is home to perhaps the greatest mystery of the solar system: the so-called Martian dichotomy, which has baffled ...

Venus, Saturn, Jupiter and Mars will appear to line up and be bright enough to see with the naked eye in the first few hours ...

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

Groundbreaking research into Mars' energy balance reveals a polar surplus driving dynamic weather patterns, including massive ...

The six planets will be visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, ...

MrEarth is back at it again! This time, it's the ongoing race to send a human (or, in this case, ball) to Mars! But we'll ...

Read on for horoscopes for your zodiac sign. Typical Aries dates: March 21 to April 19.

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

This week, astrological alignments bring transformative opportunities for Gemini, Cancer, and Pisces. Key cosmic events ...

Six planets grace the sky this month in what's called a planetary parade — Venus, Mars, Jupiter and Saturn are visible to the ...

This month's planetary alignment sees Venus, Mars, Jupiter, Saturn, Neptune and Uranus visible in the night sky all at once.

Six planets will be in alignment this weekend, with four of them shining bright in one sweeping view. What to know about the ...