Mercury is a planet that just doesn't make sense. It's incredibly small yet hosts a relatively massive core. Mercury is so strange that astronomers have not been able to explain its properties with ...

You probably learned in school — or space camp — that Venus is Earth’s closest planetary neighbor. Ready to get your mind blown? A new model of the planets’ orbit shuffles things around, calculating ...

Mercury, the first planet from the Sun - The Forgotten Planet. With the search for life beyond Earth primarily focusing on Mars and the rest of the solar system, it’s easy to forget about the small ...

Mercury is a planet of extremes. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The planet is named after the Roman deity Mercury, the speedy ...

Time to thank the cosmic gods, because you’ve (almost) made it through the second Mercury retrograde of the year. Over the last few weeks, relaying important information and expressing what’s on your ...

The inner planets Mercury and Venus will both be visible in the east-southeast sky before sunrise on Tuesday, Nov. 25.

Last month, Jupiter and Saturn treated skywatchers to a spectacular, once-in-a-lifetime "great conjunction," when they were closer in the night sky than they had been since medieval times. Now, as our ...