Use the sentence to remember the order. If you’re American ... You probably learned some variant on a planet-themed mnemonic in school. In today’s eight-planet solar system, Mercury, Venus ...

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.

Earth isn't alone in orbiting our sun; it's joined by a bunch of planets, moons, asteroids, and comets that we collectively call our solar system. But how much do you know about our home among the ...

A youthful, not-yet-abandoned fascination with science fiction animates Ingels to look beyond the constrictions of current ...

Other useful mnemonic tools include acronyms (Roy G. Biv, for the colors of the rainbow) and acrostics (My Very Excellent Mother Just Served Us Noodles, for the names of the planets). Dellis, who was ...

On the evening of Jan. 10, Venus will reach its greatest eastern elongation — its easternmost distance from the sun. This is ...

January's sky brings a planet parade, Mars opposition, and the Quadrantid meteor shower. Enjoy Venus and Saturn's close ...

The Atacama Large Millimeter/submillimeter Array (ALMA) has successfully observed a site of planet formation by detecting a high concentration of dust grains, a planet-forming material ...

A NASA Hubble Space Telescope observation program called OPAL (Outer Planet Atmospheres Legacy) obtains long-term baseline observations of Jupiter, Saturn, Uranus, and Neptune in order to ...

Billions of years ago, in the frigid outer reaches of our solar system, two icy worlds collided. Rather than destroying each ...