The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan. Mercury, which is the closest planet to the sun, would be the first to be ...

Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

While the video of Mercury’s transit across the Sun is breathtaking. The small planet even appears as a black disk silhouetted against the bright solar star that our solar system is centered around.

Sky gazers across the U.S. will have a chance to see an extraordinary celestial event on Friday as all of the planets in our solar system will appear in the evening sky. A 'planet parade': This ...

Four of the planets — Mercury, Venus, Jupiter, and Mars — will be easily visible to the naked eye, while special equipment like a pair of binoculars or a small telescope will be needed to ...